| DQR ID | Subject | Affected Data Streams | Data Quality Metric |
|---|---|---|---|
| D011218.8 | SGP EBBR E18 - E18 EBBR Right RH Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D961122.26 | SGP/EBBR/E20 - EBBR 3 Month Checks - 10 EFs | sgp30ebbrE20.b1 | Incorrect |
| D150427.4 | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE32.b1 | Incorrect |
| D170216.4 | SGP/EBBR/E12 - Surface Energy Balance Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D990127.40 | SGP/EBBR/E20 - Wind Speed Data Incorrect | sgp15ebbrE20.b1 | Incorrect |
| D010605.11 | SGP EBBR E20 - E20 EBBR Soil Temperatures Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D101004.1 | SGP/EBBR/E12 - Net radiation too high | sgp30ebbrE12.b1 | Incorrect |
| D030117.24 | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #1 and #4 High | sgp30ebbrE18.b1 | Incorrect |
| D000211.10 | SGP/EBBR - EBBR E20 Data Incorrect from SHF #5 | sgp30ebbrE20.b1 | Incorrect |
| D151120.3 | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE32.b1 | Incorrect |
| D970401.1 | Controlled burn at E12 on 3/20/97 and affected data | sgpsirosE12.a1 | Suspect |
| D020717.10 | SGP/EBBR/E12 - AEM Hung | sgp30ebbrE12.b1 | Incorrect |
| D030115.3 | SGP/EBBR/E12 - Data Mostly Zero Following Logger Restart | sgp30ebbrE12.b1 | Incorrect |
| D020717.48 | SGP/EBBR/E20 - Measurements Zero | sgp30ebbrE20.b1 | Incorrect |
| D990415.3 | SGP/EBBR/E20 - Air Temperature Incorrect | sgp5ebbrE20.b1 | Incorrect |
| D030115.2 | SGP/EBBR/E12 - Reprocessed and Corrected: Net Rad Calibration Coefficients | sgp30ebbrE12.b1 | Note |
| D950803.2 | SGP/EBBR/E20 - Reprocess: Soil Temperature Malfunction | sgp30ebbrE20.b1 | Incorrect |
| D980529.14 | SGP/EBBR/E20 - Six Month Checks | sgp30ebbrE20.b1 | Incorrect |
| D030114.13 | SGP/EBBR/E12 - Data zero following Logger Restart | sgp30ebbrE12.b1 | Incorrect |
| D130110.6 | SGP/EBBR/E32 - AEM failure | sgp30ebbrE32.b1 | Incorrect |
| D000225.4 | SGP/EBBR - EBBR E18 Right Humidity Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D170216.24 | SGP/EBBR/E40 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE40.b1 | Incorrect |
| D120229.1 | SGP/EBBR/E36 - Missing Data | sgp30ebbrE36.b1 | Missing |
| D010416.12 | SGP/EBBR/E18 - E18 EBBR Thum Right Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D960508.8 | SGP/EBBR/E20 - 3-month check | sgp30ebbrE20.b1 | Incorrect |
| D031204.16 | SGP/EBBR/E18 - 6 Month Checks | sgp30ebbrE18.b1 | Incorrect |
| D140807.1 | SGP/EBBR/E36 - Instrument problem | sgp30ebbrE36.b1 | Incorrect |
| D970330.5 | SGP/EBBR/E20 - Wind Speed Cups Frozen | sgp30ebbrE20.b1 | Incorrect |
| D050206.12 | SGP/EBBR/E18 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE18.b1 | Incorrect |
| D100720.2 | SGP/EBBR/E12 - Intermittent data loss | sgp30ebbrE12.b1 | Suspect |
| D130621.3 | SGP/EBBR/E36 - Incorrect sensible and latent heat fluxes | sgp30ebbrE36.b1 | Incorrect |
| D030114.14 | SGP/EBBR/E12 - Battery Voltage Low | sgp30ebbrE12.b1 | Suspect |
| D961122.9 | SGP/EBBR/E12 - Battery Voltage Low - Fluxes Affected | sgp30ebbrE12.b1 | Incorrect |
| D030117.20 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #5 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D140318.6 | SGP/EBBR/E12 - Soil heat flow incorrect | sgp30ebbrE12.b1 | Incorrect |
| D030114.19 | SGP/EBBR/E12 - AEM Stuck in One Position | sgp30ebbrE12.b1 | Incorrect |
| D030114.12 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp5ebbrE12.b1 | Incorrect |
| D170726.10 | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes and Net Radiation Slightly Too Large | sgp5ebbrE39.b1 | Incorrect |
| D030117.14 | SGP/EBBR/E20 - Wind speed and direction frozen | sgp5ebbrE2.b1 | Incorrect |
| D060501.11 | SGP/EBBR/E12 - Fluxes and Gradient Measurements Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D040813.6 | SGP/EBBR/E18 - Soil Temperature #2 Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D050404.4 | SGP/EBBR/E20 - Temp. of thum_left Incorrect At Times | sgp30ebbrE20.b1 | Suspect |
| D011127.26 | SGP EBBR E12 - E12 EBBR Data Incorrect During 6 Month Checks | sgp30ebbrE12.b1 | Incorrect |
| D011207.11 | SGP EBBR E12 - E12 EBBR Data Incorrect From AEM In One Position | sgp5ebbrE12.b1 | Incorrect |
| D980117.28 | SGP/EBBR/E20 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp30ebbrE20.b1 | Suspect |
| D960508.5 | SGP/EBBR/E12 - 3-month check | sgp30ebbrE12.b1 | Incorrect |
| D100816.1 | SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes - a result of low battery voltage. | sgp30ebbrE20.b1 | Suspect |
| D030115.10 | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #1 High | sgp30ebbrE18.b1 | Incorrect |
| D020717.51 | SGP/EBBR/E20 - Measurements Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D161215.5 | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE39.b1 | Incorrect |
| D031217.4 | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage | sgp30ebbrE12.b1 | Suspect |
| D990127.23 | SGP/EBBR/E18 - Wind Direction Data Incorrect (revised) | sgp5ebbrE18.b1 | Incorrect |
| D160318.2 | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE39.b1 | Suspect |
| D010517.2 | SGP EBBR E20 - E20 EBBR Right Air T Incorrect | sgp5ebbrE20.b1 | Incorrect |
| D020628.4 | SGP/EBBR/E20 - 3-month Check | sgp5ebbrE20.b1 | Incorrect |
| D021113.1 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE9.b1 | Note |
| D051106.23 | SGP/EBBR/E12 - Average Soil Heat Flux Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D990129.2 | SGP/EBBR/E12 - Data Incorrect | sgp5ebbrE12.b1 | Incorrect |
| D000225.6 | SGP/EBBR - EBBR E18 Much Data Missing After Lightning Strike | sgp5ebbrE18.b1 | Suspect |
| D040304.10 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE12.b1 | Incorrect |
| D010605.8 | SGP EBBR E20 - E20 EBBR Data Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D000221.8 | SGP/EBBR - EBBR E12 Anemometer Cups Frozen, Wind Speed Incorrect | sgp5ebbrE12.b1 | Incorrect |
| D060111.13 | SGP/EBBR/E20 - Data Incorrect During J-Panel Replacement | sgp30ebbrE20.b1 | Incorrect |
| D990129.1 | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect | sgp30ebbrE12.b1 | Suspect |
| D160810.3 | SGP/EBBR/E39 - EBBR Flux Measurements Sometimes Incorrect for Southerly Winds | sgp30ebbrE39.b1 | Suspect |
| D011218.5 | SGP EBBR E18 - E18 EBBR AEM Frozen, Data Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D941021.7 | SGP/EBBR/E20 - Net Radiometer Hemisphere Changes | sgp30ebbrE20.b1 | Incorrect |
| D160104.7 | SGP Site Power Outage Due to Winter Storm | sgpirt200msE13.a1 | Note |
| D940909.1 | SGP/EBBR/E12 - Miscellaneous Problems Affecting Data | sgp5ebbrE12.b1 | Incorrect |
| D951116.6 | SGP/EBBR/E20 - AEM Exchange Stopped in Snow and Freezing Rain | sgp30ebbrE20.b1 | Incorrect |
| D000303.1 | SGP/EBBR - EBBR E20 Left Air Temperature Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D010427.3 | SGP EBBR E18 - E18 EBBR Left Ventilator Fan Not Working | sgp30ebbrE18.b1 | Suspect |
| D950626.4 | SGP/EBBR/E20 - Frozen Wind Speed Sensor | sgp30ebbrE20.b1 | Incorrect |
| D030115.11 | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #4 High | sgp30ebbrE18.b1 | Incorrect |
| D040507.2 | SGP/EBBR/E20 - Left Air Temperature Incorrect | sgp30ebbrE20.b1 | Suspect |
| D950719.2 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp30ebbrE12.b1 | Incorrect |
| D950908.3 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp30ebbrE12.b1 | Incorrect |
| D170509.1 | SGP/EBBR/E36 - Missing Data | sgp30ebbrE36.b1 | Missing |
| D030115.14 | SGP/EBBR/E18 - Water in Net Radiometer Dome | sgp30ebbrE18.b1 | Incorrect |
| D940105.8 | SGP/EBBR/E20 - Reprocess: Questionable data in soil heat fluxes at E20 | sgp30ebbrE20.b1 | Incorrect |
| D990127.39 | SGP/EBBR/E18 - Wind Speed Data Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D030110.25 | SGP/EBBR/E20 - Data Incorrect during 6 month checks | sgp30ebbrE20.b1 | Incorrect |
| D940711.3 | SGP/EBBR/E12 - Aspirator Failure | sgp5ebbrE12.b1 | Incorrect |
| D970729.1 | SGP/EBBR/E20 - Reprocess: E20 Soil Probes #3 Cables Cut | sgp30ebbrE20.b1 | Incorrect |
| D150803.2 | SGP/EBBR/E36 - All Data Missing | sgp5ebbrE36.b1 | Missing |
| D961122.23 | SGP/EBBR/E12 - EBBR 3 Month Checks - 10 EFs | sgp5ebbrE12.b1 | Incorrect |
| D010213.2 | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced | sgp5ebbrE12.b1 | Incorrect |
| D020717.24 | SGP/EBBR/E18 - Left Air Temperature Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D140226.3 | SGP/EBBR/E32 - Sensible and latent Heat Fluxes Incorrect | sgp30ebbrE32.b1 | Missing |
| D040304.17 | SGP/EBBR/E18 - Wind Speed Frozen Stopped By Ice | sgp5ebbrE18.b1 | Incorrect |
| D990127.25 | SGP/EBBR/E20 - Wind Direction Data Incorrect (revised) | sgp30ebbrE20.b1 | Incorrect |
| D010605.7 | SGP EBBR E20 - E20 EBBR Data Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D041222.14 | SGP/EBBR/E18 - 6 Month Checks | sgp5ebbrE18.b1 | Incorrect |
| D980117.17 | SGP/EBBR/E12- EBBR Frozen Wind Speed | sgp15ebbrE12.b1 | Incorrect |
| D030117.12 | SGP/EBBR/E20 - Change of Energy Storage Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D011127.31 | SGP EBBR E20 - E20 EBBR Data Incorrect During 6 Month Checks | sgp30ebbrE20.b1 | Incorrect |
| D170216.29 | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE32.b1 | Incorrect |
| D040304.18 | SGP/EBBR/E18 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE18.b1 | Incorrect |
| D030712.19 | SGP/EBBR/E18 - 6 Month Checks | sgp30ebbrE18.b1 | Incorrect |
| D030711.21 | SGP/EBBR/E12 - AEM Hung Inbetween Home Positions | sgp30ebbrE12.b1 | Incorrect |
| D940329.2 | SGP/EBBR/E20 - Pressure Sensor Malfunction | sgp30ebbrE20.b1 | Incorrect |
| D011218.13 | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Data Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D040505.3 | SGP/EBBR/E18 - Pressure Low | sgp5ebbrE18.b1 | Incorrect |
| D030115.12 | SGP/EBBR/E18 - Data Mostly Zero Following Logger Restart | sgp5ebbrE18.b1 | Incorrect |
| D030117.2 | SGP/EBBR/E20 - Data incorrect during instrument maintenance | sgp5ebbrE20.b1 | Incorrect |
| D941021.1 | SGP/EBBR/E20 - Soil Moisture Probe Failure | sgp30ebbrE20.b1 | Incorrect |
| D020628.18 | SGP/EBBR/E20 - T/RH Check | sgp5ebbrE20.b1 | Incorrect |
| D020716.16 | SGP/EBBR/E20 - 6 Month Checks | sgp5ebbrE20.b1 | Incorrect |
| D961122.17 | SGP/EBBR/E20 - Incorrect Data from Left Humidity Probe | sgp30ebbrE20.b1 | Incorrect |
| D010402.14 | SGP/EBBR/E12 - E12 EBBR Wind Speed Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D011218.6 | SGP EBBR E18 - E18 EBBR Wind Direction Frozen, Data Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D031222.20 | SGP/EBBR/E20 - Wind Speed Sensor Frozen By Ice Storm | sgp30ebbrE20.b1 | Incorrect |
| D170216.18 | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE36.b1 | Incorrect |
| D160804.1 | SGP/EBBR/E39 - Barometric Pressure Incorrect | sgp30ebbrE39.b1 | Incorrect |
| D151204.3 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D050304.1 | SGP/EBBR/E12 - Wind Speed and Direction Frozen by Ice Storm | sgp5ebbrE12.b1 | Incorrect |
| D000225.5 | SGP/EBBR - EBBR E18 Data Incorrect After Lightning Strike | sgp15ebbrE18.b1 | Incorrect |
| D090313.3 | SGP/EBBR/E18 - Wind Speed Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D980416.14 | SGP/EBBR/E18 - 3 Month Check | sgp5ebbrE18.b1 | Incorrect |
| D080410.2 | SGP/EBBR/E20 - Wind Direction 50 Degrees High | sgp5ebbrE20.b1 | Incorrect |
| D170721.1 | SGP/EBBR/E36 - Wind Direction Incorrect | sgp5ebbrE36.b1 | Incorrect |
| D011218.9 | SGP EBBR E20 - E20 EBBR Soil Heat Flow #4 Incorrect | sgp30ebbrE20.b1 | Suspect |
| D140117.7 | SGP/EBBR/E12 - Intermittent spikes in soil temp 1 | sgp30ebbrE12.b1 | Suspect |
| D011127.29 | SGP EBBR E18 - E18 EBBR Data Incorrect During 6 Month Checks | sgp30ebbrE18.b1 | Incorrect |
| D010517.1 | SGP EBBR E20 - E20 EBBR Soil Heat Flow #3 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D941021.12 | SGP/EBBR/E12 - Net Radiometer Hemisphere Changes | sgp30ebbrE12.b1 | Suspect |
| D130507.2 | SGP/EBBR/E12 - Soil temp 1 erratic | sgp30ebbrE12.b1 | Suspect |
| D000301.4 | SGP/EBBR - EBBR E18 Net Radiation Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D040722.1 | SGP/EBBR/E20 - Wind Direction Stuck at 100 Degrees | sgp5ebbrE20.b1 | Suspect |
| D040723.4 | SGP/EBBR/E18 - Soil Temperature and Moisture Probes in Set #1 Spiked Outputs | sgp30ebbrE18.b1 | Note |
| D990129.8 | SGP/EBBR/E20 - Data Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D060501.17 | SGP/EBBR/E18 - Wind Speed Zero | sgp5ebbrE18.b1 | Incorrect |
| D990127.38 | SGP/EBBR/E18 - Wind Speed Data Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D140709.1 | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE36.b1 | Incorrect |
| D940808.2 | SGP/EBBR/E12 - Stopped Ventilation Fan | sgp5ebbrE12.b1 | Suspect |
| D030711.22 | SGP/EBBR/E18 - AEM Hung | sgp30ebbrE18.b1 | Incorrect |
| D031031.7 | SGP/EBBR/E20 - Water in Net Radiometer, Surface Fluxes Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D020717.7 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D030919.9 | SGP/EBBR/E18 - Water in Net Radiometer; Surface Fluxes are Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D971021.7 | SGP/EBBR/E20 - EBBR Biannual Checks | sgp5ebbrE20.b1 | Incorrect |
| D980416.11 | SGP/EBBR/E12 - 3-Month Check | sgp5ebbrE12.b1 | Incorrect |
| D060501.22 | SGP/EBBR/E20 - Suspect Measurements | sgp5ebbrE20.b1 | Suspect |
| D020716.11 | SGP/EBBR/E12 - 6 Month Checks | sgp30ebbrE12.b1 | Incorrect |
| D130410.12 | SGP/EBBR/E32 - AEM failure | sgp30ebbrE32.b1 | Incorrect |
| D051106.26 | SGP/EBBR/E18 - Average Soil Heat Flux Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D050404.1 | SGP/EBBR/E20 - Wrong Datalogger Program Installed | sgp30ebbrE20.b1 | Suspect |
| D130110.5 | SGP/EBBR/E12 - Sensible and latent heat fluxes intermittently incorrect | sgp30ebbrE12.b1 | Incorrect |
| D151201.2 | SGP ALL INSTRUMENTS - Icing Event | sgp30baebbrE35.c1 | Note |
| D150617.3 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D950626.15 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp5ebbrE12.b1 | Incorrect |
| D950816.2 | SGP/EBBR/E12 - AEM Failure | sgp30ebbrE12.b1 | Incorrect |
| D040615.3 | SGP/EBBR/E12 - Incorrect Times | sgp30ebbrE12.b1 | Suspect |
| D010402.13 | SGP/EBBR/E12 - E12 EBBR Wind Direction Incorrect | sgp5ebbrE12.b1 | Incorrect |
| D011218.11 | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Incorrect Data | sgp30ebbrE20.b1 | Incorrect |
| D010605.12 | SGP EBBR E20 - E20 EBBR Data Incorrect During STP #3 Replacement | sgp5ebbrE20.b1 | Incorrect |
| D990127.21 | SGP/EBBR/E12 - Wind Direction Data Incorrect (revised) | sgp5ebbrE12.b1 | Incorrect |
| D100803.1 | SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes | sgp30ebbrE20.b1 | Suspect |
| D990129.4 | SGP/EBBR/E12 - All Temperature Measurements Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D990128.2 | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect | sgp30ebbrE12.b1 | Suspect |
| D150115.1 | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE32.b1 | Incorrect |
| D030117.13 | SGP/EBBR/E20 - Battery voltage low | sgp5ebbrE20.b1 | Incorrect |
| D031029.2 | SGP/EBBR/E20 - Reprocess: Soil Temperature Probe #1 Measurements Spiked | sgp30ebbrE20.b1 | Incorrect |
| D980528.13 | SGP/EBBR/E12 - Wind Direction Sensor Failure | sgp5ebbrE12.b1 | Incorrect |
| D030121.1 | SGP/EBBR/E20 - Reprocess: Soil Temperature #1 and Soil Heat Flow #5 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D170216.20 | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE39.b1 | Incorrect |
| D020717.50 | SGP/EBBR/E20 - Measurements Incorrect During Sensor Changeout | sgp30ebbrE20.b1 | Incorrect |
| D151222.1 | SGP/EBBR/E40 - Missing Data | sgp30ebbrE40.b1 | Missing |
| D030711.8 | SGP/EBBR/E20 - Soil Heat Flow#5 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D050922.2 | SGP/EBBR/E20 - Soil Temperature and Soil Moisture #4 Measurements Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D961122.8 | SGP/EBBR/E12 - Left Air Temperature Thermocouple Incorrect | sgp5ebbrE12.b1 | Incorrect |
| D020717.40 | SGP/EBBR/E20 - AEM Hung | sgp30ebbrE20.b1 | Suspect |
| D011218.14 | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE20.b1 | Suspect |
| D170216.16 | SGP/EBBR/E32 - Wind Speed and Direction Frozen | sgp30ebbrE32.b1 | Incorrect |
| D031211.5 | SGP/EBBR/E20 - Pressure Sensor Data Incorrect | sgp5ebbrE20.b1 | Suspect |
| D031031.4 | SGP/EBBR/E12 - Water in Net Radiometer, Surface Fluxes Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D131216.3 | SGP/EBBR/E12 - Multiplexer/datalogger problems | sgp30ebbrE12.b1 | Suspect |
| D160414.3 | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes and Net Radiation Incorrect | sgp30ebbrE36.b1 | Suspect |
| D120307.1 | SGP/EBBR/E12 - Soil heat flux #4 intermittently incorrect | sgp30ebbrE12.b1 | Incorrect |
| D010427.1 | SGP EBBR E18 - E18 EBBR Wind Direction Frozen | sgp30ebbrE18.b1 | Incorrect |
| D070716.2 | SGP/EBBR/E20 - Reprocessing Notice (RID 449) | sgp30ebbrE20.b1 | Note |
| D020717.20 | SGP/EBBR/E18 - Version 6 Produced Noisy Fluxes | sgp30ebbrE18.b1 | Suspect |
| D030712.16 | SGP/EBBR/E12 - 6 Month Checks | sgp5ebbrE12.b1 | Incorrect |
| D050207.8 | SGP/EBBR/E18 - Wind Direction Frozen Stopped By Ice Storm | sgp5ebbrE18.b1 | Incorrect |
| D990622.2 | SGP/EBBR/E18 - Pressure Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D150312.2 | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE32.b1 | Incorrect |
| D020717.11 | SGP/EBBR/E12 - Measurements Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D051112.7 | SGP/EBBR/E20 - metadata corrections | sgp30ebbrE20.b1 | Note |
| D120411.3 | SGP/EBBR/E32 - Sensible and latent heat fluxes incorrect | sgp30ebbrE32.b1 | Incorrect |
| D170120.4 | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE36.b1 | Incorrect |
| D020717.45 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #3 Incorrect During Sensor Changeout | sgp30ebbrE20.b1 | Incorrect |
| D990127.29 | SGP/EBBR/E20 - Wind Direction Data Incorrect | sgp5ebbrE20.b1 | Incorrect |
| D150530.1 | SGP/EBBR/E12 - Missing Data | sgp30ebbrE12.b1 | Missing |
| D140709.2 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D050215.17 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE12.b1 | Incorrect |
| D060111.5 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect at Times | sgp30ebbrE12.b1 | Incorrect |
| D151214.3 | SGP/EBBR/E39 - Sensible and latent heat fluxes incorrect | sgp30ebbrE39.b1 | Incorrect |
| D040304.19 | SGP/EBBR/E20 - Wind Speed Frozen Stopped By Ice | sgp5ebbrE20.b1 | Incorrect |
| D040813.2 | SGP/EBBR/E20 - AEM Failure | sgp5ebbrE20.b1 | Incorrect |
| D010416.9 | SGP/EBBR/E18 - E18 EBBR Data Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D130410.4 | SGP/EBBR/E12 - AEM failure | sgp30ebbrE12.b1 | Incorrect |
| D040304.20 | SGP/EBBR/E20 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE20.b1 | Incorrect |
| D980416.16 | SGP/EBBR/E20 - 3 Month Check | sgp30ebbrE20.b1 | Incorrect |
| D030114.11 | SGP/EBBR/E12 - Resistance-based Measurements Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D080424.1 | SGP/EBBR/E18 - Soil Heat Flow #4 Offscale Low; Sensible and Latent Heat Flux Sometimes Incorrect | sgp30ebbrE18.b1 | Suspect |
| D050206.14 | SGP/EBBR/E20 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE20.b1 | Incorrect |
| D151221.2 | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE36.b1 | Incorrect |
| D031208.5 | SGP/EBBR/E20 - Wind Direction Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D020717.21 | SGP/EBBR/E18 - AEM Hung | sgp30ebbrE18.b1 | Incorrect |
| D000211.12 | SGP/EBBR - EBBR E20 Thermocouple Data Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D040304.11 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE12.b1 | Incorrect |
| D150312.1 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D030110.33 | SGP/EBBR/E12 - Data Incorrect during 6 month checks | sgp5ebbrE12.b1 | Incorrect |
| D990129.3 | SGP/EBBR/E12 - Temperature, RH, and Vapor Pressure Data Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D011218.10 | SGP EBBR E20 - E20 EBBR Soil Heat Flow #2 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D080702.2 | SGP/EBBR/E18 - SHF #4 Measurements Too Low; Sensible and Latent Heat Fluxes Suspect | sgp30ebbrE18.b1 | Suspect |
| D031204.19 | SGP/EBBR/E20 - 6 Month Checks | sgp30ebbrE20.b1 | Incorrect |
| D941021.6 | SGP/EBBR/E12 - Low home_15 Values | sgp30ebbrE12.b1 | Incorrect |
| D020717.9 | SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D980117.32 | SGP/EBBR/E12 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp30ebbrE12.b1 | Suspect |
| D011218.7 | SGP EBBR E18 - E18 EBBR Wind Speed Frozen, Data Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D941021.2 | SGP/EBBR/E20 - Aspirator Fan Stoppage | sgp30ebbrE20.b1 | Incorrect |
| D100720.3 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Other Measurements Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D030712.21 | SGP/EBBR/E20 - 6 Month Checks | sgp5ebbrE20.b1 | Incorrect |
| D031222.15 | SGP/EBBR/E12 - Wind Speed Sensor Frozen By Ice Storm | sgp5ebbrE12.b1 | Incorrect |
| D951116.2 | SGP/EBBR/E20 - Soil Heat Flow Zero Under Unchanging Conditions | sgp30ebbrE20.b1 | Note |
| D120319.1 | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE36.b1 | Incorrect |
| D030711.9 | SGP/EBBR/E20 - Soil Storage Incorrect After Startup | sgp30ebbrE20.b1 | Incorrect |
| D050719.9 | SGP/EBBR/E12 - Improved EBBR CR10 Program | sgp30ebbrE12.b1 | Note |
| D960502.1 | SGP/EBBR/E20 - Temperature/RH Probes Malfunction and Replacement | sgp5ebbrE20.b1 | Suspect |
| D990622.4 | SGP/EBBR/E12 - RH top Data Zero | sgp30ebbrE12.b1 | Incorrect |
| D060111.8 | SGP/EBBR/E12 - Multiplexer failure | sgp30ebbrE12.b1 | Incorrect |
| D031204.9 | SGP/EBBR/E12 - 6 Month Checks | sgp30ebbrE12.b1 | Incorrect |
| D050206.9 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE12.b1 | Incorrect |
| D000225.10 | SGP/EBBR - EBBR E12 Net Radiation Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D940616.4 | SGP/EBBR/E20 - Soil Moisture Probe | sgp30ebbrE20.b1 | Incorrect |
| D010213.7 | SGP/EBBR/E20 - EBBR E20 Wind Speed Iced | sgp5ebbrE20.b1 | Incorrect |
| D020717.12 | SGP/EBBR/E12 - Resistance Measurements Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D030110.23 | SGP/EBBR/E18 - Data Incorrect during 6 month checks | sgp30ebbrE18.b1 | Incorrect |
| D050719.11 | SGP/EBBR/E18 - Improved EBBR CR10 Program | sgp30ebbrE18.b1 | Note |
| D020717.8 | SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D011127.4 | SGP EBBR E20 - E20 EBBR Soil Temperature #3 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D981113.1 | SGP/EBBR/E20 - Incorrect Data - Cattle Vandalism | sgp30ebbrE20.b1 | Incorrect |
| D110830.1 | SGP/EBBR/E12 - Loose connection (SHF #4) | sgp30ebbrE12.b1 | Incorrect |
| D020628.1 | SGP/EBBR/E12 - 3-month Check | sgp5ebbrE12.b1 | Incorrect |
| D971021.4 | SGP/EBBR/E12 - EBBR Biannual Checks | sgp5ebbrE12.b1 | Incorrect |
| D060818.6 | SGP/EBBR/E18 - Sensible and Latent Heat Fluxes and Net Radiation Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D990218.2 | SGP/EBBR/E20 - Pressure Low | sgp5ebbrE20.b1 | Incorrect |
| D010416.8 | SGP/EBBR/E18 - E18 EBBR Data Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D050207.10 | SGP/EBBR/E20 - Wind Direction Frozen Stopped By Ice Storm | sgp5ebbrE20.b1 | Incorrect |
| D150530.2 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D051111.10 | SGP/EBBR/E12 - metadata corrections | sgp30ebbrE12.b1 | Note |
| D160803.16 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Net Radiation Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D170216.21 | SGP/EBBR/E39 - Wind Speed Incorrect | sgp30ebbrE39.b1 | Incorrect |
| D021113.4 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE26.b1 | Note |
| D940921.1 | SGP/EBBR/E20 - Fan Stopped, T and RH Biases | sgp5ebbrE20.b1 | Incorrect |
| D051106.10 | SGP/EBBR/E18 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D941021.9 | SGP/EBBR/E20 - Net Radiometer Hemisphere Changes | sgp30ebbrE20.b1 | Suspect |
| D031124.12 | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage | sgp30ebbrE12.b1 | Suspect |
| D170216.9 | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes incorrect | sgp30ebbrE32.b1 | Incorrect |
| D020628.15 | SGP/EBBR/E12 - T/RH Check | sgp5ebbrE12.b1 | Incorrect |
| D041222.3 | SGP/EBBR/E20 - Soil Moisture #4 and Soil Temperature #4 Incorrect | sgp30ebbrE20.b1 | Suspect |
| D950816.4 | SGP/EBBR/E20 - AEM Home 30 Values Low | sgp5ebbrE20.b1 | Note |
| D990127.41 | SGP/EBBR/E20 - Wind Speed Data Incorrect | sgp15ebbrE20.b1 | Incorrect |
| D151218.6 | SGP /E39/E40 - Icing Event | sgpsebsE39.b1 | Note |
| D120507.5 | SGP/EBBR/E12 - Sensible and Latent heat fluxes incorrect | sgp30ebbrE12.b1 | Incorrect |
| D031029.1 | SGP/EBBR/E20 - Fuse Blown in AEM | sgp30ebbrE20.b1 | Incorrect |
| D170216.6 | SGP/EBBR/E12 - Sensible and Latent Flux Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D000301.1 | SGP/EBBR - EBBR E12 Net Radiation Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D040206.1 | SGP/EBBR/E18 - AEM Sitting At Home 15 Position | sgp30ebbrE18.b1 | Incorrect |
| D020717.22 | SGP/EBBR/E18 - Soil Heat Flows Incorrect After Calibration Changeout | sgp30ebbrE18.b1 | Incorrect |
| D010517.3 | SGP EBBR E20 - E20 EBBR Right Air T Incorrect | sgp30ebbrE20.b1 | Suspect |
| D020716.14 | SGP/EBBR/E18 - 6 Month Checks | sgp30ebbrE18.b1 | Incorrect |
| D071115.1 | SGP/EBBR/E20 - Reprocessing Notice (RID 453) | sgp30ebbrE20.b1 | Note |
| D041006.3 | SGP/EBBR/E20 - All Soil Measurements Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D980117.20 | SGP/EBBR/E20- EBBR Frozen Wind Speed | sgp30ebbrE20.b1 | Incorrect |
| D961122.3 | SGP/EBBR/E12 - Annual Calibration Changeout | sgp30ebbrE12.b1 | Missing |
| D020717.25 | SGP/EBBR/E18 - Reference Temperature Incorrect | sgp5ebbrE18.b1 | Incorrect |
| D120712.1 | SGP/EBBR/E36 - Soil heat flow #3 too shallow | sgp30ebbrE36.b1 | Suspect |
| D020717.47 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #4 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D950626.16 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp5ebbrE12.b1 | Incorrect |
| D170216.19 | SGP/EBBR/E36 - Wind Direction and Wind Speed incorrect | sgp30ebbrE36.b1 | Incorrect |
| D940105.2 | SGP/EBBR/E20 - Blown fuse in AEM at E20 | sgp30ebbrE20.b1 | Incorrect |
| D940616.3 | SGP/EBBR/E12 - Wind Direction | sgp5ebbrE12.b1 | Incorrect |
| D010213.1 | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced | sgp5ebbrE12.b1 | Incorrect |
| D160427.8 | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE39.b1 | Suspect |
| D030117.19 | SGP/EBBR/E20 - Reprocess: Heat Flow #3 and #5 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D020726.1 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 and #4 incorrect | sgp30ebbrE20.b1 | Incorrect |
| D030117.22 | SGP/EBBR/E20 - Reprocess: Soil Temperature #1 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D980623.2 | SGP/EBBR/E18 - Reprocessed and Corrected: E18 EBBR Net Radiometer Calibration | sgp30ebbrE18.b1 | Note |
| D010416.10 | SGP/EBBR/E18 - E18 EBBR Data Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D010213.5 | SGP/EBBR/E18 - EBBR E18 Wind Speed Iced | sgp5ebbrE18.b1 | Incorrect |
| D030711.10 | SGP/EBBR/E20 - RHtop Zero | sgp30ebbrE20.b1 | Incorrect |
| D020717.23 | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #1 Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D170216.5 | SGP/EBBR/E12 - Ice storm | sgp5ebbrE12.b1 | Incorrect |
| D080902.1 | SGP/EBBR/E20 - Wind Direction Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D980117.6 | SGP/EBBR/E12 - AEM Failure and Replacement | sgp30ebbrE12.b1 | Incorrect |
| D980529.9 | SGP/EBBR/E12 - Six Month Checks | sgp5ebbrE12.b1 | Incorrect |
| D010605.13 | SGP EBBR E20 - E20 EBBR Data Incorrect After Program Restart | sgp30ebbrE20.b1 | Incorrect |
| D020717.43 | SGP/EBBR/E20 - Pressure Almost Constant | sgp30ebbrE20.b1 | Incorrect |
| D030115.13 | SGP/EBBR/E18 - Data Incorrect After Logger Restart | sgp30ebbrE18.b1 | Incorrect |
| D020717.42 | SGP/EBBR/E20 - Battery Voltage Low | sgp30ebbrE20.b1 | Suspect |
| D090313.12 | SGP/EBBR/E12 - Wind Speed Incorrect | sgp5ebbrE12.b1 | Incorrect |
| D030117.11 | SGP/EBBR/E20 - Reprocess: Soil Temperature #2 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D990127.10 | SGP/EBBR/E18 - Water In Net Radiometer, Flux Data Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D960320.3 | SGP/EBBR/E12 - Wind Speed Cups Frozen | sgp30ebbrE12.b1 | Incorrect |
| D010402.16 | SGP/EBBR/E12 - E12 EBBR AEM Stuck - Data Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D151207.5 | SGP/EBBR/E32 - Sensible and Latent Heat Flux Incorrect | sgp30ebbrE32.b1 | Incorrect |
| D111026.2 | SGP/EBBR/E20 - Sensible and latent heat fluxes overestimated | sgp30ebbrE20.b1 | Incorrect |
| D940106.2 | SGP/EBBR/E12 - Invalid data due to blown AEM fuse at E12 | sgp30ebbrE12.b1 | Incorrect |
| D010416.11 | SGP/EBBR/E18 - E18 EBBR Right RH Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D980731.2 | SGP/EBBR/E20 - Wind Speed Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D971027.6 | SGP/EBBR/E18 - Left RH Probe Temperature Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D041222.11 | SGP/EBBR/E12 - 6 Month Checks | sgp5ebbrE12.b1 | Incorrect |
| D051111.13 | SGP/EBBR/E18 - metadata corrections | sgp30ebbrE18.b1 | Note |
| D030117.25 | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D060622.6 | SGP/EBBR/E20 - Net Radiation, Fluxes Too Large | sgp30ebbrE20.b1 | Incorrect |
| D170216.23 | SGP/EBBR/E39 - Wind Direction Incorrect | sgp30ebbrE39.b1 | Incorrect |
| D010605.14 | SGP EBBR E20 - E20 EBBR Some Data Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D151214.2 | SGP/EBBR/E39 - Wind speed and Direction Incorrect | sgp30ebbrE39.b1 | Incorrect |
| D160118.4 | SGP/EBBR/E32 - Sensible and Latent Heat fluxes Incorrect | sgp30ebbrE32.b1 | Incorrect |
| D010427.2 | SGP EBBR E18 - E18 EBBR Wind Direction Frozen | sgp30ebbrE18.b1 | Incorrect |
| D950921.3 | SGP/EBBR/E12 - AEM replacement | sgp30ebbrE12.b1 | Incorrect |
| D980117.26 | SGP/EBBR/E12 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp30ebbrE12.b1 | Suspect |
| D131218.2 | SGP/EBBR/E36 - Sensible and latent heat fluxes incorrect | sgp30ebbrE36.b1 | Incorrect |
| D041223.1 | SGP/EBBR/E20 - Soil Heat Flow #4 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D970730.2 | SGP/EBBR/E12 - Wind Direction Sensor Malfunctions | sgp30ebbrE12.b1 | Incorrect |
| D010213.4 | SGP/EBBR/E18 - EBBR E18 Wind Speed Iced | sgp5ebbrE18.b1 | Incorrect |
| D020717.49 | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D170216.25 | SGP/EBBR/E40 - Wind Speed and Direction Incorrect | sgp30ebbrE40.b1 | Incorrect |
| D061103.3 | SGP/EBBR/E18 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE18.b1 | Incorrect |
| D090313.16 | SGP/EBBR/E20 - Wind Speed Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D060921.3 | SGP/EBBR/E12 - Net Radiation, and Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D090414.1 | SGP/EBBR/E20 - Wind Direction Incorrect | sgp5ebbrE20.b1 | Incorrect |
| D050215.16 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE12.b1 | Incorrect |
| D950815.3 | SGP/EBBR/E20 - Annual Calibration Changeout | sgp30ebbrE20.b1 | Note |
| D160125.1 | SGP/EBBR/E32 - All Data Missing | sgp30ebbrE32.b1 | Missing |
| D030117.10 | SGP/EBBR/E20 - Data Zero following logger restarts | sgp30ebbrE20.b1 | Incorrect |
| D131216.4 | SGP/EBBR/E32 - Sensible and latent heat fluxes incorrect | sgp30ebbrE32.b1 | Incorrect |
| D050207.5 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice Storm | sgp30ebbrE12.b1 | Incorrect |
| D151222.2 | SGP/EBBR/E40 - Wind Speed Flatlined | sgp5ebbrE40.b1 | Incorrect |
| D121107.8 | SGP/EBBR/E36 - Bad battery voltage | sgp30ebbrE36.b1 | Incorrect |
| D100202.4 | SGP/EBBR/E20 - Wind speed sensor frozen stopped | sgp15ebbrE20.b1 | Incorrect |
| D980410.10 | SGP/EBBR/E20 - Wind Speed Sensor Frozen | sgp30ebbrE20.b1 | Incorrect |
| D990128.1 | SGP/EBBR/E12 - Wind Speed Data Incorrect | sgp5ebbrE12.b1 | Incorrect |
| D170216.28 | SGP/EBBR/E32 - Relative Humidity Above Maximum - Sensible and Latent Heat Fluxes were not Affected | sgp5ebbrE32.b1 | Note |
| D170102.2 | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE39.b1 | Incorrect |
| D040915.7 | SGP/EBBR/E20 - Soil Heat Flow #3 and Soil Temperature #3 Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D041222.16 | SGP/EBBR/E20 - 6 Month Checks | sgp30ebbrE20.b1 | Incorrect |
| D060921.4 | SGP/EBBR/E12 - Soil Temperature #1 Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D020717.6 | SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE12.b1 | Incorrect |
| D030117.8 | SGP/EBBR/E20 - Reprocessed and Corrected: Net Rad Coefficients Incorrect | sgp30ebbrE20.b1 | Note |
| D041222.2 | SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not affected | sgp30ebbrE12.b1 | Incorrect |
| D051106.28 | SGP/EBBR/E20 - Average Soil Heat Flux Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D020717.46 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 Has a Negative Offset | sgp30ebbrE20.b1 | Incorrect |
| D030117.18 | SGP/EBBR/E20 - AEM Hung between Home Positions | sgp30ebbrE20.b1 | Incorrect |
| D990127.37 | SGP/EBBR - EBBR E18 Wind Speed Data Incorrect | sgp30ebbrE18.b1 | Suspect |
| D010605.9 | SGP EBBR E20 - E20 EBBR Net Radiation Data Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D980529.12 | SGP/EBBR/E18 - Six Month Checks | sgp30ebbrE18.b1 | Incorrect |
| D951127.3 | SGP/EBBR/E12 - AEM Failure/Right Radiation Shield OFF | sgp30ebbrE12.b1 | Incorrect |
| D100223.1 | SGP/EBBR/E12 - Wind Speed Sensor Frozen Stopped by Icing | sgp30ebbrE12.b1 | Incorrect |
| D130201.4 | SGP/EBBR/E12 - Net rad too high | sgp30ebbrE12.b1 | Incorrect |
| D030117.3 | SGP/EBBR/E20 - Resistance-based Measurements Incorrect | sgp30ebbrE20.b1 | Incorrect |
| D050719.13 | SGP/EBBR/E20 - Improved EBBR CR10 Program | sgp30ebbrE20.b1 | Note |
| D000228.1 | SGP/EBBR - EBBR E20 Right Air Temperature Incorrect | sgp30ebbrE20.b1 | Incorrect |
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-05-10 | 18:10:00 | 2001-06-12 | 22:40:00 | Incorrect |
| Subject: | SGP EBBR E18 - E18 EBBR Right RH Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The RH portion of the T/RH probe produced incorrect data. Sensible and latent heat fluxes and the Bowen ratio were also incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-10-23 | 17:30:00 | 1996-10-23 | 17:55:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - EBBR 3 Month Checks - 10 EFs |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-04-08 | 12:30:00 | 2015-04-23 | 15:30:00 | Incorrect |
| 2015-04-05 | 22:00:00 | 2015-04-06 | 15:30:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and Latent Heat Fluxes incorrect due to the automatic exchange mechanism (AEM) not operating. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-13 | 14:00:00 | 2017-01-15 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Surface Energy Balance Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Surface energy balance was incorrect while the AEM was not exchanging. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-08 | 05:45:00 | 1999-01-09 | 22:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp15ebbrE20.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-11-01 | 19:30:00 | 2000-11-01 | 19:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Soil Temperatures Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | All soil temperatures were incorrect for the indicated period. Latent and sensible heat fluxes were therefore incorrect also. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-09-01 | 12:00:00 | 2010-09-29 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Net radiation too high |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Net radiation was too high, resulting in overestimated sensible and latent heat fluxes. Net rad domes replaced. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-19 | 18:30:00 | 2002-08-20 | 21:00:00 | Incorrect |
| 2002-08-06 | 20:30:00 | 2002-08-07 | 02:00:00 | Incorrect |
| 2002-07-26 | 20:30:00 | 2002-07-27 | 03:00:00 | Incorrect |
| 2002-08-17 | 20:30:00 | 2002-08-17 | 21:30:00 | Incorrect |
| 2002-07-30 | 20:00:00 | 2002-08-03 | 01:30:00 | Incorrect |
| 2002-08-09 | 19:00:00 | 2002-08-12 | 01:30:00 | Incorrect |
| 2002-07-19 | 14:30:00 | 2002-07-20 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #1 and #4 High |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil Heat Flow #1 and #4 measurements were 2X to offscale high during these periods. See suggestions for a work-around. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-04-07 | 18:00:00 | 1999-04-21 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E20 Data Incorrect from SHF #5 |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Much of the SHF #5 data is incorrect during the period. Apparently, the PM crew dislodged something, since the problem began during J-panel changeout the 4/7/99 PM. At the 7/21/99 PM, the reference temperature was repaired and reseated. At that time the SHF #5 data became correct again; the two events are probably related only in that other connections, including that of the SHF #5, were probably reseated at the same time. The report of the PM activity is not detailed enough to determine the exact causes and fixes. The incorrect SHF #5 data can be identified by it being an order of magnitude larger than the values from the other soil heat flow sensors. Affected data are: 5 minute: none 15 minute: mv_hft5 30 minute: shf5, c_shf5, g5, ave_shf, e, h |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-11 | 21:30:00 | 2015-11-17 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and latent heat fluxes were incorrect while the AEM was not operating. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-03-20 | 22:55:00 | 1997-03-31 | 23:59:00 | Suspect |
| Subject: | Controlled burn at E12 on 3/20/97 and affected data |
|---|---|
| Affected Datastreams: | sgpsirosE12.a1 |
| Description | DQR No: Platforms: sgpsirosE12 sgpebbrE12 Subject: Controlled burn at E12 on 3/20/97 and affected data Date Submitted: 3/31/97 Submitted By: Mike Splitt ___ Instrument Mentor ___ EST Member ___ Science Team Member _x_ Other _Site_Scientist_Team_ For questions or problems, please contact the ARM Experiment Center at 509-375-6898 or via email at problems@arm.gov. Platform/Measurement: What level data: (raw,a0,a1,b1,c1 etc): all levels What location was the data collected at: sgp E12 Period of time in question Begin Date 3/20/97 Time 22:55 (GMT) End Date * Time : (GMT) * The "end date" is not necessarily in need of definition. The EBBR data appears to be directly affected for a period of about one hour. The effect on the local shortwave albedo will be longer lasting and could be said to "end" when the vegetative state recovers to being representative of similar areas. Data should be labeled: ___ questionable ___ All data fields affected ___ incorrect ___ Only some data fields affected ___ wrong calibration _x_ others Discussion of Problem: This report is reflective of a change in environmental conditions thought to be worth noting at E12, Pawhuska, and does not concern any issue of substandard sensor performance. A contolled burn was conducted at the the Pawhuska Extened Facillity (E12) by the Tallgrass Prairie Preserve. The Preserve director, Bob Hamilton, contacted the ARM SGP Site prior to the activity which allowed Site Operations to take precautionary steps. Danny Nelson reported the following activities by Site Operations: 1) Site Ops cut and removed all dried grass within the EF fence and also to a 10' perimeter around the outside of the fence. Final grass height was 1-3". This was done on Monday the 17th of March. 2) Tallgrass Prairie Preserve personnel put down a 10' wet line around our EF prior to the burn on the 20th, so the EF area was not burned. 3) Site Ops had originally planned to deploy a field crew to inspect the site on the day following the burn. TPP director Bob Hamilton had agreed to call us the morning of the burn, but didn't actually call us until this morning; the day following the burn. Due to the short notification and prior commitment of personnel, Site Ops will not be able to travel to the site until Monday or Tuesday of next week. John Shatz was given the following information about the duration of the burn: >Bob Hamilton called and indicated that they did a control burn of the >Tall Grass Prairie yesterday(3-20-97). He indicated that the fire in >our area lasted between 4:55 PM to 5:40 PM. He also said that they >plan to put this control burning on a two to three year cycle. Affect on ARM Data: Review of the EBBR temperature data (the sensor in the lower position) shows a dramatic increase of temperature from 26 to 37 Celsius in a 10 minute period. The temperatures appear to have been affected for approximately 1 hour. Analysis of the broadband shortwave albedo during this period reveals changes that appear to be related to the burn. The following is a listing of the daily average shortwave albedos (caluclated by running a linear regression fit on the "curve" created by plotting the upwelling shortwave vs. the downwelling shortwave values from the E12 SIROS broadband instrumentation): Date Broadband Shortwave Albedo ________ ____________________________ 3-14-97 .171 3-15-97 .171 3-16-97 .169 3-17-97 .166 3-18-97 .135 3-19-97 .171 3-20-97 .174 3-21-97 .141 3-22-97 .143 3-23-97 .148 3-24-97 .147 The grass cutting activity at the EF does not appear to be responsible for the abledo change on 3-18; this is likely related to the drizzle and overcast sky conditions in the area on that day. Note that the albedo recovers to previous values by the next day. The burn occured late on the 20th, and it appears the albedo after the burn sustained a more long-lasting decrease in value. Examination of both the upwelling and downwelling solar irradiance indicates that the albedo change was a resultant of the decrease in upwelling irradiance, as the downwelling values were comparable to other sites. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-01-30 | 04:30:00 | 2002-02-06 | 16:46:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM Hung |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The automatic exchange mechanism did not exchange properly, causing other measurements to be incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-12-10 | 17:00:00 | 2002-12-10 | 17:29:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Data Mostly Zero Following Logger Restart |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Most of the measurements were zero, which normally happens after a datalogger restart. The restart on 12/10/02 occurred after a CR10 program change of net radiometer coefficients and subsequent restart of the CR10. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-11-27 | 18:00:00 | 2001-11-27 | 18:01:00 | Incorrect |
| 2002-05-29 | 18:30:00 | 2002-05-29 | 19:01:00 | Incorrect |
| 2002-05-15 | 17:00:00 | 2002-05-15 | 17:01:00 | Incorrect |
| 2001-11-14 | 16:00:00 | 2001-11-14 | 16:01:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Measurements Zero |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Most measurements were zero during the indicated periods. This often happens for the first reported data time after a CR10 datalogger restart. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-03-25 | 00:40:00 | 1999-04-07 | 17:45:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Air Temperature Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | Right air temperature (15 minute) and top and bottom air temperatures (5 and 30 minute) during this period are incorrect because the right air temperature sensor was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-16 | 17:20:00 | 2002-12-10 | 17:20:00 | Note |
| Subject: | SGP/EBBR/E12 - Reprocessed and Corrected: Net Rad Calibration Coefficients |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | DATA REPROCESSED and CORRECTED: Incorrect calibration used resulted in bad q values. Simple multipliers corrected the data and then sensible and latent heat fluxes were recalculated. Positive net radiation measurements were multiplied by 0.972. Negative net radiation measurements were multiplied by 1.0198. The data were archived in April 2017. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::ebbr/fsite::sgp/ffac::sgp.E12 ORIGINAL DQR CATEGORY: Red( Incorrect) REPROCESSED and CORRECTED DATA ARCHIVED:2017-04 REPROCESS IDENTIFICATION NUMBER: RID 228 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- The Net Radiometer coefficients were incorrect in the CR10 program when the replacement EBBR unit was installed on 08/16/02. The data can be easily corrected; see the Suggestion area below. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-07-19 | 04:30:00 | 1995-07-19 | 05:00:00 | Incorrect |
| 1995-07-19 | 07:30:00 | 1995-07-19 | 15:00:00 | Incorrect |
| 1995-07-29 | 07:00:00 | 1995-07-29 | 16:30:00 | Incorrect |
| 1995-07-18 | 04:00:00 | 1995-07-18 | 14:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature Malfunction |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During parts of three days, soil temperature probe #4 indicated values that were either too high or too low, for unknown reasons. Site Operations personnel checked connections and repacked the soil around the probe on 21 July at about 1535 GMT, although ts4 had recovered to proper values the previous day. The times of incorrect data and the affected quantities are shown below. Some of the ts4 values during the listed periods appear to be correct, although the change in energy storage values appear to indicate otherwise. 18 July: 0400-1400 GMT 19 July: 0430-0500, 0730-1500 GMT 29 July: 0700-1630 GMT 15 minute: rr_ts4 30 minute: ts4, ces4, g4, ave_shf, e, h Sensible, latent, and soil heat fluxes need to be recalculated using the change in energy storage of probes 1-3 and 5, as follows. ave_shf = (g1 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-05-20 | 14:50:00 | 1998-05-20 | 15:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Six Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During EBBR 6 month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-07-23 | 17:00:00 | 2002-07-23 | 17:29:00 | Incorrect |
| 2002-08-16 | 16:00:00 | 2002-08-16 | 16:29:00 | Incorrect |
| 2002-09-03 | 17:00:00 | 2002-09-03 | 17:29:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Data zero following Logger Restart |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Most of the measurements were zero, which normally happens after a datalogger restart. The restart on 08/16/02 occurred after an EBBR unit changeout. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-12-26 | 12:00:00 | 2013-01-03 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - AEM failure |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | AEM failure; blown fuse. Latent and sensible heat fluxes are missing during this time. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-12-03 | 05:45:00 | 2000-01-11 | 21:35:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E18 Right Humidity Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | After the 3 December 99 lightning strike, the humidity portion of the right T/RH probe drifted downwards at times, causing vapor pressure gradients to be incorrectly measured. Therefore, sensible and latent heat fluxes were also incorrect. Since much of the data from the period is missing (because of latent effects of the lightning strike), little data is actually affected. The affected data values were: 5 minute: hum_top, hum_bot, vp_top, vp_bot 15 minute: mv_hum_r 30 minute: hum_top, hum_bot, vp_top, vp_bot, bowen, h, e |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-14 | 12:00:00 | 2017-01-15 | 05:30:00 | Incorrect |
| Subject: | SGP/EBBR/E40 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE40.b1 |
| Description | Sensible and latent heat fluxes were incorrect while the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2011-12-09 | 14:00:00 | 2011-12-13 | 17:30:00 | Missing |
| 2012-04-09 | 22:30:00 | 2012-04-11 | 05:00:00 | Missing |
| 2012-02-13 | 06:00:00 | 2012-02-17 | 17:30:00 | Missing |
| Subject: | SGP/EBBR/E36 - Missing Data |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Data are missing and unrecoverable. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-03-21 | 23:00:00 | 2000-04-04 | 21:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - E18 EBBR Thum Right Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The temperature portion of the right T/RH probe was not working. Calculated vapor pressure, Bowen ratio, and sensible and latent heat fluxes were also incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-04-10 | 15:00:00 | 1996-04-10 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - 3-month check |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During EBBR 3-month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. The period of incorrect data for the EBBR is listed above; data times affected do not include the beginning time and do include the ending time (data files are denoted by the end time). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-28 | 22:25:00 | 2003-10-28 | 23:15:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2014-07-30 | 04:30:00 | 2014-08-07 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Instrument problem |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | The automatic exchange mechanism (AEM) hung at the home 30 position. Sensible and latent heat fluxes and Bowen ratio are incorrect during the stated period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-11-24 | 10:10:00 | 1996-11-25 | 18:05:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Cups Frozen |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Freezing rain, snow, and below freezing conditions during 24 November 1996 caused the wind speed sensor cups to freeze in a stopped state at E20, Meeker, OK. On 25 November, the cups broke free of the ice and turned freely again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-05 | 18:10:00 | 2005-01-06 | 20:45:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Speed Frozen Stopped By Ice Storm |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-05-03 | 00:00:00 | 2010-06-08 | 18:00:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Intermittent data loss |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The datalogger at E12 EBBR reset it's time to Dec 3, 1999 on a periodic basis. This occurred on 5/3, 5/15, 5/17, 5/18, 5/27, 6/5 and 6/6 of 2010. Each time this occurred we lost 1-2 hours of data. The datalogger was apparently at fault. The problem has not re-occurred since the datalogger was replaced on 6/8/2010. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-05-28 | 08:00:00 | 2013-06-06 | 14:00:00 | Incorrect |
| 2013-05-19 | 03:30:00 | 2013-05-20 | 19:30:00 | Incorrect |
| 2013-06-06 | 22:30:00 | 2013-06-19 | 16:00:00 | Incorrect |
| 2013-04-10 | 12:30:00 | 2013-04-16 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Incorrect sensible and latent heat fluxes |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | The AEM fuse failed several times, resulting in incorrect sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-09-09 | 00:00:00 | 2002-10-29 | 18:30:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Battery Voltage Low |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Normally, when Battery Voltage drops below 10.5 volts, most measurements are suspect and some are often incorrect. In this particular case, some of the data is suspect when the battery voltage is below 11.0 volts. Soil Heat Flow #3 is normally affected first, with other measurements following at lower voltages. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-07-13 | 00:00:00 | 1996-10-09 | 23:59:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Battery Voltage Low - Fluxes Affected |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The battery condition deteriorated over time so that the solar panel was not always able to keep the battery voltage high enough to produce correct home signal values. The home 15 signal was too low much of the period above, with home 30 being low also occasionally. The home signal qc checks should be consulted to determine which half hour values of sensible (h) and latent (e) heat fluxes are incorrect; no other data values were affected. The first occurrence of low home 15 signal appears to be 0630 GMT on 13 July 1996. Battery voltage did not drop low enough to cause any sensors to stop functioning. The battery was replaced on 9 October 1996 at 2000 GMT, during annual calibration changeout of the entire EBBR unit (the mentor assumes that the battery was replaced - no instrument maintenance reports are available for that time). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-12-22 | 01:30:00 | 2002-12-30 | 20:00:00 | Incorrect |
| 2002-12-20 | 21:00:00 | 2002-12-21 | 16:30:00 | Incorrect |
| 2002-12-08 | 02:30:00 | 2002-12-09 | 05:00:00 | Incorrect |
| 2002-12-06 | 20:00:00 | 2002-12-07 | 02:30:00 | Incorrect |
| 2002-12-09 | 09:30:00 | 2002-12-20 | 18:30:00 | Incorrect |
| 2002-12-03 | 12:00:00 | 2002-12-04 | 04:00:00 | Incorrect |
| 2002-12-21 | 17:30:00 | 2002-12-22 | 01:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #5 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Heat Flow #5 was incorrect during these periods. See below for a work-around. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2014-01-01 | 00:00:00 | 2014-03-11 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Soil heat flow incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil heat flow 1 exhibited a larger range than sensors 2-5. However, this did not have a significant effect on sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-11-25 | 18:30:00 | 2002-11-25 | 19:00:00 | Incorrect |
| 2002-10-31 | 07:00:00 | 2002-11-12 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM Stuck in One Position |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | When the AEM (Automatic Exchange Mechanism) is hung at a home position, the gradients of temperature and relative humidity, and thus sensible and latent heat fluxes, are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-07-01 | 00:00:00 | 2002-07-12 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind direction and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-06-27 | 18:30:00 | 2017-07-20 | 20:20:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes and Net Radiation Slightly Too Large |
|---|---|
| Affected Datastreams: | sgp5ebbrE39.b1 |
| Description | The bottom net radiometer dome was broken or had water in it, resulting in measurements of net radiation, sensible heat flux, and latent heat flux that were slightly too large. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-12-04 | 12:00:00 | 2002-12-05 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind speed and direction frozen |
|---|---|
| Affected Datastreams: | sgp5ebbrE2.b1 |
| Description | Wind Speed and Dierction were frozen in place by an ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-04-15 | 23:00:00 | 2006-04-25 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Fluxes and Gradient Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The AEM hung in one position; therefore the fluxes and gradient measurements were incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-07-06 | 18:30:00 | 2004-07-06 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Soil Temperature #2 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil Temperature #2 was incorrect during the indicated period. Average soil heat flow, sensible heat flux, and latent heat flux are incorrect, as a result. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-03-20 | 12:30:00 | 2005-04-27 | 20:00:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Temp. of thum_left Incorrect At Times |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The temperature portion of the left T/RH probe temperature spiked at times. This was caused by a faulty surge protector in the J-Panel. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-10-18 | 19:30:00 | 2001-10-18 | 21:16:00 | Incorrect |
| 2001-04-03 | 16:25:00 | 2001-04-03 | 17:16:00 | Incorrect |
| Subject: | SGP EBBR E12 - E12 EBBR Data Incorrect During 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The data was incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-20 | 21:30:00 | 2001-04-21 | 09:31:00 | Incorrect |
| 2001-04-21 | 20:30:00 | 2001-04-26 | 15:01:00 | Incorrect |
| 2001-04-06 | 20:30:00 | 2001-04-11 | 17:31:00 | Incorrect |
| 2001-04-17 | 23:30:00 | 2001-04-18 | 16:31:00 | Incorrect |
| 2001-04-16 | 19:00:00 | 2001-04-17 | 16:31:00 | Incorrect |
| 2001-04-18 | 21:00:00 | 2001-04-20 | 13:01:00 | Incorrect |
| 2001-04-27 | 00:30:00 | 2001-05-01 | 14:31:00 | Incorrect |
| Subject: | SGP EBBR E12 - E12 EBBR Data Incorrect From AEM In One Position |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The AEM kept stopping in one position. Offset biases are not removed from the gradient data in this situation and the data indicated is therefore incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-01-08 | 11:00:00 | 1998-01-14 | 15:45:00 | Suspect |
| Subject: | SGP/EBBR/E20 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The EBBR AEM stopped exchanging because of icing at during this time period. The calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for the time period indicated. The other measurements listed are also incorrect for those times: Note: Mentor supplied the end date/time to this DQR after submission. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-04-11 | 15:50:00 | 1996-04-11 | 16:40:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - 3-month check |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. The period of incorrect data for the EBBR is listed above; data times affected do not include the beginning time and do include the ending time (data files are denoted by the end time). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-07-09 | 10:30:00 | 2010-08-04 | 02:00:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes - a result of low battery voltage. |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Supply voltage sometimes dropped too low at night, causing incorrect measurements of sensible and latent heat fluxes, pressure, AEM home signal, and soil heat flow. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-09-01 | 21:00:00 | 2002-11-12 | 21:30:00 | Incorrect |
| 2002-07-08 | 18:00:00 | 2002-07-19 | 14:30:00 | Incorrect |
| 2002-08-20 | 21:00:00 | 2002-08-26 | 03:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #1 High |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil Heat Flow #1 measurements were 2X to offscale high during these periods. See below for a work-around. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-05-15 | 17:15:00 | 2002-05-15 | 17:31:00 | Incorrect |
| 2001-12-27 | 18:45:00 | 2001-12-27 | 19:01:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Many measurements were incorrect because of the lack of an initial 15 minute value to use for gradient or soil change of energy storage calculations. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-12-05 | 07:00:00 | 2016-12-07 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Sensible and latent heat fluxes incorrect during this period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-01-03 | 15:00:00 | 2003-10-12 | 23:55:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The barometer output scaled with supply voltage (it followed the charging of the battery by the solar panel). The problem did not affect the sensible and latent heat flux calculations beyond the expected system error. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-12-21 | 16:35:00 | 1998-12-23 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Direction Data Incorrect (revised) |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-02-15 | 19:30:00 | 2016-03-10 | 21:00:00 | Suspect |
| Subject: | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Sensible and latent heat fluxes were sometimes incorrect when soil heat flow 1 was incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-03-22 | 00:00:00 | 2000-05-22 | 00:00:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Right Air T Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The right air temperature probe was incorrect while connections for it were checked. Bowen ratio, sensible heat flux, and latent heat flux were incorrect as a result. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-10-13 | 13:00:00 | 1995-10-13 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - 3-month Check |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-01 | 00:00:00 | 2003-06-18 | 23:59:00 | Note |
| Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header |
|---|---|
| Affected Datastreams: | sgp30ebbrE9.b1 |
| Description | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-03-01 | 18:00:00 | 2005-03-29 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Average Soil Heat Flux Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | A typo in the version 9 EBBR program caused average soil heat flow to be zero, resulting in both sensible and latent heat fluxes being approximately 20 watts per meter squared too large during the middle of the day. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-12-28 | 16:00:00 | 1998-12-28 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | Most of the data values for just this time (1630 GMT) for the 5, 15, and 30 minute periods are incorrect; this apparently was the result of PM activities. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-12-03 | 05:35:00 | 2000-02-14 | 09:15:00 | Suspect |
| Subject: | SGP/EBBR - EBBR E18 Much Data Missing After Lightning Strike |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | On 3 December 99 this EBBR system was struck by lightning. Much of the data from this EBBR system for the stated period is missing. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-02-09 | 12:15:00 | 2004-02-09 | 14:30:00 | Incorrect |
| 2004-02-02 | 09:45:00 | 2004-02-02 | 18:20:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-07-20 | 19:30:00 | 2000-08-02 | 03:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The data was incorrect because battery voltage was low. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-12-21 | 00:00:00 | 1999-12-21 | 13:20:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E12 Anemometer Cups Frozen, Wind Speed Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The anemometer cups were frozen stalled during this period. The following values were therefore incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-12-21 | 09:30:00 | 2005-12-21 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Data Incorrect During J-Panel Replacement |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Much of the data was incorrect during replacement of J-Panel #1. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-01 | 17:00:00 | 1999-01-03 | 11:30:00 | Suspect |
| Subject: | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-09-30 | 21:00:00 | 2016-08-02 | 17:30:00 | Suspect |
| Subject: | SGP/EBBR/E39 - EBBR Flux Measurements Sometimes Incorrect for Southerly Winds |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | When the wheat was at it's peak and for southerly winds, the EBBR flux measurements reflected combined fluxes from both the grass between the EBBR and the wheat and the wheat itself. The EBBR AEM height was not high enough to capture fluxes from just the wheat for southerly wind directions. EBBR fluxes for northerly directions (from grass) were consistent with the ECOR measured fluxes. The EBBR AEM was raised on 2 Aug 2016 and fluxes from southerly directions have been similar to those from the ECOR since then. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-02-15 | 08:00:00 | 2001-02-16 | 20:31:00 | Incorrect |
| Subject: | SGP EBBR E18 - E18 EBBR AEM Frozen, Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The AEM was frozen in one position. The indicated data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-09-29 | 17:15:00 | 1994-09-29 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Net Radiometer Hemisphere Changes |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Incorrect data during hemisphere change. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-12-26 | 00:00:00 | 2016-01-01 | 23:59:59 | Note |
| Subject: | SGP Site Power Outage Due to Winter Storm |
|---|---|
| Affected Datastreams: | sgpirt200msE13.a1 |
| Description | On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result was very very slick roads and mass power outages. The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th. The power was restored on 7:56 PM CDT on Wednesday, December 30th Site Emergency procedures were activated and Technicians drained water out of instrument reservoirs and other measures as needed, early Monday morning. On Wednesdays as roads and power started was restored to much of the areas east of I-35 , Site Technicians performed maintenance on several Extended Facilities. During this period, data are potentially missing, incorrect, or suspect. Carefully inspect the data before use. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-08-20 | 02:30:00 | 1994-08-31 | 15:42:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Miscellaneous Problems Affecting Data |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | Three hardware problems occurred at E12, Pawhuska, OK in late August 1994. On August 12 the wind direction sensor malfunctioned. Therefore, all wind direction, sigma, and resultant wind speed values for the period above are incorrect. The wind direction sensor was replaced on August 31. Affected data are: 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws. Water accumulated in the AEM motor box and apparently caused a reduction in the voltage level of the home signal (battery condition was very good and so was not the cause); by late August 27 the hom30 level had fallen below the minimum qc check level. The AEM continued to exchange properly. The minimum qc level check is intended to help detect either a non-operating AEM or low battery condition. The Campbell CR10 software operates properly unless the hom30 signal is thirty-five or greater. So the low hom30 values do not result in any incorrect data!!!. I point this out because this situation demonstrates a condition flagged by the qc checks, even though no effect on the data has occurred. The AEM box was dried out and new dessicant placed in it on August 31. On August 28, 1994 the left AEM housing ventilation fan ceased to operate because of clogging of the ventilation system with debris. Fifteen minute data seems to indicate that the fan stopped operating just before 1245 GMT. This is at least the third such incidence of clogging this summer at different EBBRs. The clog was removed and ventilation restored on August 31. The lack of ventilation caused improper measurements of temperature and relative humidity in the left housing (these are quite obvious in the 15 minute data but difficult to detect in the 30 minute data) and therefore incorrect values of sensible and latent heat. Affected data are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_l, mv_hum_l, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-11-11 | 03:00:00 | 1995-11-11 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - AEM Exchange Stopped in Snow and Freezing Rain |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | On the night of November 10-11, a north-south line from south central Kansas through south central Oklahoma received snow and freezing rain and experienced below freezing temperatures. This caused the EBBR automatic exchange mechanism (AEM) to stop exchanging temporarily. Note that temperatures, relative humidities, and vapor pressures are not affected; these are correct as measured, but the height at which the measurements occurred must be determined from the home signal value. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-02-23 | 19:35:00 | 2000-02-23 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E20 Left Air Temperature Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Left air temperature (thermocouple) was incorrect during part of the period, thereby affecting top and bottom air temperature. The affected data and times are: 5 minute: tair_top (1935 GMT) 15 minute: tair_l (1945 GMT) 30 minute: tair_top, bowen, e, h (2000 GMT) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-09-12 | 00:15:00 | 2000-09-19 | 21:01:00 | Suspect |
| Subject: | SGP EBBR E18 - E18 EBBR Left Ventilator Fan Not Working |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The left ventilator fan was not working. Some of the indicated measurements may be incorrect (under some wind speed and direction conditions, cloud cover, and time of day, some of the data may be correct). The data is therefore described as suspect for the indicated period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-03-07 | 05:55:00 | 1995-03-07 | 21:45:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Frozen Wind Speed Sensor |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | On March 7, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Meeker, OK (E20). All 5, 15, and 30 minute data values indicated below are incorrect for the period listed above. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-03 | 01:30:00 | 2002-08-06 | 20:30:00 | Incorrect |
| 2002-07-20 | 20:00:00 | 2002-07-26 | 20:30:00 | Incorrect |
| 2002-08-12 | 01:30:00 | 2002-08-17 | 20:30:00 | Incorrect |
| 2002-07-27 | 03:00:00 | 2002-07-30 | 20:00:00 | Incorrect |
| 2002-08-07 | 02:00:00 | 2002-08-09 | 19:00:00 | Incorrect |
| 2002-08-17 | 21:30:00 | 2002-08-19 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #4 High |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil Heat Flow #4 measurements were 2X or offscale high during this period when compared with the other soil heat flow measurements. See below for a work-around. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-03-01 | 00:00:00 | 2004-03-31 | 23:55:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Left Air Temperature Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The left air temperature, and therefore top and bottom air temperatures were offscale or incorrect on occasion. Bowen ratio, sensible heat flux, and latent heat flux were also incorrect during those times. Inspection of the data is required to detect the incorrect periods. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-07-03 | 06:00:00 | 1995-07-07 | 16:05:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | For the period indicated, a malfunction in the E12 EBBR wind direction sensor caused the following data values to be incorrect: 5 minute: res_ws, wind_d, and sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, and sigma_wd. Wind direction normally indicated small values (15 to 25 degrees) from 3 July 1995 at 0600 GMT through 6 July 1995 at 1500 GMT (at which time the sensor was removed). No sensor was in place between 6 July 1995 at 1500 GMT and 7 July 1995 at 1605 GMT (at which time a new sensor was installed). Old sensor S/N K3039, new S/N K3033. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-08-16 | 00:15:00 | 1995-08-30 | 17:57:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | For the period above, a malfunction in the E12 EBBR wind direction sensor caused the wind direction to output a constant 212 degrees. Site operations replaced the sensor (S/N K3033) with K3042. The following data values are incorrect for the period listed: 5 minute: res_ws, wind_d, and sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, and sigma_wd. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-04-29 | 13:00:00 | 2017-05-30 | 16:00:00 | Missing |
| Subject: | SGP/EBBR/E36 - Missing Data |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | All data missing. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-10-09 | 14:00:00 | 2002-10-15 | 20:30:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Water in Net Radiometer Dome |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The net radiation measurement is incorrect. Measurements calculated using net radiation are also incorrect. No work-around is possible for this situation. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1993-11-24 | 12:15:00 | 1993-11-24 | 15:15:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Questionable data in soil heat fluxes at E20 |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil heat flux probes #4 had been indicating soil heat fluxes that were higher than the other four probes. It was decided to replace it. On November 24, 1993 Soil Heat Flux probe #4 was replaced, resulting in outputs more similar to the other four probes. This PIF does not invalidate previous measurements by the old probe #4, but only indicates data that is bad as a result of the replacement procedure. This procedure resulted in some bad data for the adjoining soil heat flux probes #3 and #5 also. Bad data for #3 includes the 1600 GMT half hour, and 5 and 15 minute periods between 1530 and 1600 GMT. Bad data for #4 includes half hour times of 1600 through 1900 GMT, with 5 and 15 minute data inbetween those times being invalid as well. Bad data for #5 includes half hour times of 1630 and 1700 GMT, with 5 and 15 minute periods inbetween those times being invalid as well. Corrupted 30 minute values of shf4, c_shf4, g4, ave_shf, h, and e, and corrupted 15 minute values of mv_hft4 resulted. The quantities shf4, c_shf4, g4, and mv_hft4 are bad data values and are not recoverable. The other quantities can be recalculated using the remaining functioning set(s) of soil sensors. Use the following equations: ave_shf = (gs summed)/n, where n is the number of probes functioning e = -(q + ave_shf)/(1 + bowen) where q is net radiation, and bowen is Bowen Ratio h = e * bowen |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-08 | 10:15:00 | 1999-01-10 | 13:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-11-26 | 19:00:00 | 2002-11-26 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Data Incorrect during 6 month checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Some of the measurements are incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-06-18 | 20:00:00 | 1994-06-22 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Aspirator Failure |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | On June 18, 1994 the aspirator fan in the EBBR at E12, Pawhuska stopped working. This situation was not discovered until a Preventative Maintenance visit by site operations personnel on June 22, 1994. I determined the time of the beginning of the malfunction from close inspection of the sensible and latent heat flux data. There is no aspiration status output for the EBBRs, nor is one presently possible. Wind speeds during most of the period listed were sufficient to provide some (although inadequate) aspiration to the temperature and relative humidity probes, making it difficult for most users of the data to be able to tell (except in a few circumstances) that the sensible and latent heat flux values produced were incorrect. All of the data fields listed below are incorrect for the period listed above. Latent and Sensible heat fluxes cannot be recomputed, as the measurements that they are based on are what was corrupted. 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-06-11 | 00:00:00 | 1997-07-16 | 23:59:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: E20 Soil Probes #3 Cables Cut |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The cables going to #3 soil temperature, moisture, and heat flow probes were cut by a mower on 11 June 1997 and were repaired on 16 July 1997. Data for the temperature probe was offscale, for the soil moisture probe was a constant 10.1 (close to the actual), and for the soil heat flow was large negative during the period. The following are the data quantities that were affected: 15 minute: rr_ts3, mv_hft3, r_sm3 30 minute: ts3, ces3, shf3, c_shf3, cs3, g3, ave_shf, e, h Sensible, latent, and soil heat fluxes can be recalculated using the values from probes 1, 2, 4, and 5, as follows. ave_shf = (g1 + g2 + g4 + g5)/4 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-07-18 | 12:30:00 | 2015-07-23 | 14:30:00 | Missing |
| Subject: | SGP/EBBR/E36 - All Data Missing |
|---|---|
| Affected Datastreams: | sgp5ebbrE36.b1 |
| Description | All data missing. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-10-25 | 16:00:00 | 1996-10-25 | 16:40:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - EBBR 3 Month Checks - 10 EFs |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-18 | 07:30:00 | 2000-12-18 | 11:15:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The anemometer was frozen stopped by freezing rain; the indicated data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-04-09 | 19:00:00 | 2002-05-14 | 18:46:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Left Air Temperature Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The left air temperature was incorrect much of the time, causing the Bowen ratio, sensible heat flux, and latent heat flux to be incorrect also. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2014-02-04 | 14:30:00 | 2014-02-12 | 14:00:00 | Missing |
| Subject: | SGP/EBBR/E32 - Sensible and latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | The net radiometer under-reported net radiation. The calculated sensible and latent heat fluxes were therefore too small. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-02-05 | 01:45:00 | 2004-02-05 | 05:20:00 | Incorrect |
| 2004-01-28 | 01:40:00 | 2004-01-28 | 03:05:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Speed Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-12-21 | 14:35:00 | 1998-12-23 | 02:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction Data Incorrect (revised) |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-05-17 | 20:01:00 | 2000-05-17 | 20:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Data was incorrect right after a datalogger upgrade. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-09-28 | 22:30:00 | 2004-09-28 | 23:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-01-08 | 07:05:00 | 1998-01-08 | 19:25:00 | Incorrect |
| 1998-01-04 | 07:50:00 | 1998-01-04 | 19:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12- EBBR Frozen Wind Speed |
|---|---|
| Affected Datastreams: | sgp15ebbrE12.b1 |
| Description | Wind speed cups were frozen during the indicated time periods. All 5, 15, and 30 minute data values indicated are incorrect for the periods listed. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-11-13 | 19:00:00 | 2002-11-13 | 19:29:00 | Incorrect |
| 2002-12-11 | 20:00:00 | 2002-12-11 | 20:29:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Change of Energy Storage Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Because soil temperature measurements were not available from the beginning of the half hour, the change in soil energy storage could not be calculated and thus is incorrect. There is no fix to this problem. Average Soil Heat Flow, Sensible Heat Flux (h), and Latent Heat Flux (e) can not be calculated using the available, remaining measurements. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-10-17 | 15:00:00 | 2001-10-17 | 16:01:00 | Incorrect |
| 2001-04-04 | 17:00:00 | 2001-04-04 | 17:36:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Data Incorrect During 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The data was incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-02-07 | 12:30:00 | 2017-02-08 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and latent heat fluxes were incorrect while the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-01-28 | 01:40:00 | 2004-01-28 | 03:05:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Direction Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-04-15 | 21:20:00 | 2003-04-15 | 22:15:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-04-15 | 16:45:00 | 2003-04-15 | 17:00:00 | Incorrect |
| 2003-02-06 | 17:30:00 | 2003-02-18 | 17:15:00 | Incorrect |
| 2003-01-01 | 00:00:00 | 2003-01-10 | 16:30:00 | Incorrect |
| 2003-02-23 | 15:30:00 | 2003-03-04 | 16:45:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM Hung Inbetween Home Positions |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The AEM was hung inbetween home positions, causing many measurements to be incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-03-17 | 16:00:00 | 1994-03-17 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Pressure Sensor Malfunction |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Pressure sensor malfunction during attempt to monitor it during Preventative Maintenance visit. 30 minute values of pressure for 1600 GMT and 1630 GMT, 15 minute values for 1600, 1615, and 1630, and 5 minute values for 1600, 1605, 1610, 1615, 1620, 1625, and 1630 GMT are incorrect. However, the range of the incorrect values was such as to not adversely affect flux measurements. Some noise was apparently induced in the pressure output voltage as a result of the monitoring, although it is not known how. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-07 | 03:45:00 | 2001-04-07 | 14:01:00 | Incorrect |
| 2001-04-02 | 12:45:00 | 2001-04-02 | 17:01:00 | Incorrect |
| 2001-04-23 | 10:45:00 | 2001-04-23 | 13:31:00 | Incorrect |
| 2001-04-03 | 02:15:00 | 2001-04-03 | 15:01:00 | Incorrect |
| 2001-04-06 | 11:15:00 | 2001-04-06 | 15:01:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The indicated data was incorrect because the battery voltage was low. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-04-19 | 05:00:00 | 2004-06-13 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Pressure Low |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | Pressure readings suddenly dropped to unrealistic levels. Sensible Heat Flux was underestimated and Latent Heat Flux was overestimated because of this problem. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-11-12 | 22:00:00 | 2002-11-12 | 22:29:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Data Mostly Zero Following Logger Restart |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | Most of the measurements were zero, which normally happens after a datalogger restart. The restart on 11/12/02 occurred after replacement of soil heat flow #1. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-09 | 17:05:00 | 2002-08-09 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Data incorrect during instrument maintenance |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | Most of the data was incorrect just after the EBBR unit was replaced. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-09-29 | 15:30:00 | 1994-09-29 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Soil Moisture Probe Failure |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil moisture probe #4 went offscale for a short period, for unknown reasons. However, it may have resulted from Site Operations Preventative Maintenance activities that were taking place at the time. The times of incorrect values are listed below. 30 minute: 1600 GMT; sm4, c_shf4, cs4, ces4, g4, ave_shf, e, h 15 minute: 1600 GMT; r_sm4 |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-11-10 | 15:20:00 | 1994-11-10 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - T/RH Check |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | During the month of November 1994, site operations personnel conducted field comparisons of the temperature and relative humidity sensors in the EBBRs and the HMI31 portable T/RH meter (with the removable probe). As is reflected in the home signal output, the automatic exchange mechanism was disabled in order to conduct the checks. Measurements were taken every 5 minutes, for a half hour each in the aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated radiation shield to provide the same aspiration as the EBBR sensors received). Measurements of aspirator flow were also recorded. This information was provided to the mentor. The mentor then compared the field checks with the data recorded by the EBBRs. The periods of data and data fields that are incorrect because of the checks are listed below. Times are those at which the data are reported. Data Fields 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h 5 minute: 1520, 1525, 1530, 1535, 1540, 1545, 1550, 1555, 1600, 1605 15 minute: 1530, 1545, 1600, 1615 30 minute: 1530, 1600, 1630 (EDITOR'S NOTE: The following analysis refers to all EBBRs installed in Nov 1994) Results of the T/RH comparisons: The combined accuracy of the HMI31 and EBBR temperature sensors (thermocouples or PRTDs) is +/- 0.4 degrees C. The combined accuracy of the HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH greater than 80%. The combined accuracy for each pair of EBBR sensors of the same type is essentially the same as the quantities stated above. All of the pairs of EBBR sensors show differences that fall within the stated combined accuracies. Although this sounds wonderful, a few of the differences are close to the combined accuracy, which, because of the small differences in temperature being measured (normally smaller than the magnitude of the combined accuracy) could lead to some incorrect estimation of sensible and latent heat flux. However, unless there would be substantial differences of calibration slope of two sensors in a pair, the switching of height of the sensors every 15 minutes by the automatic exchange mechanism will remove the offset between the sensors. The comparisons between the EBBR sensors and the HMI31 T/RH meter showed much larger differences. The range of differences were: -2.4 to 0.0 degrees for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to 6.7 percent for the RH sensors. Six Thermocouples indicated differences from the HMI31 greater than the combined accuracy. Seven PRTDs indicated differences from the HMI31 greater than the combined accuracy. Four RH sensors indicated differences from the HMI31 greater than the combined accuracy. The temperature differences (for both thermocouples and PRTDs) were nearly all of one sign; the HMI31 indicated the greater temperature, which may suggest a bias in the HMI31 temperature measurement, even though a dozen differences of +/- 0.2 degrees were measured. Four differences of zero and only one positive difference (out of 40) were measured. Thirteen of the 20 RH differences were positive (HMI31 indicating the lower RH), with the differences near the level of the combined accuracies being approximately 50% positive and 50% negative. It does not appear that the HMI31 has a RH bias. Plots of EBBR sensor/HMI31 differences as a function of time from the installation of the individual sensors (a range of 10 to 30 months in the field) shows no obvious pattern of sensor drift with time. This is encouraging. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-05-01 | 19:10:00 | 2002-05-01 | 19:46:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The indicated measurements were incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-05-08 | 21:45:00 | 1996-06-19 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Incorrect Data from Left Humidity Probe |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The left humidity probe output started drifting upward at 2145 GMT on May 8, 1996 and went offscale (over 105%) at 0200 GMT on May 9, 1996. The output settled at approximately 113% and remained there until the probe was replaced on June 19, 1996. The first correct 15 minute values were at 1630 GMT on June 19 and the first correct 30 minute values were at 1700 GMT. During the period of incorrect left probe RH data, the following values were incorrect: 15 minute: mv_hum_l 30 minute: hum_top, hum_bot, vp_top, vp_bot, h, e, bowen. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-18 | 06:45:00 | 2000-12-18 | 11:01:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - E12 EBBR Wind Speed Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The wind speed sensor cups were frozen stopped by icing. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-02-15 | 06:25:00 | 2001-02-16 | 20:31:00 | Incorrect |
| 2001-02-16 | 23:55:00 | 2001-02-17 | 16:50:00 | Incorrect |
| Subject: | SGP EBBR E18 - E18 EBBR Wind Direction Frozen, Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The wind direction sensor was frozen stopped. The indicated data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-12-13 | 11:00:00 | 2003-12-13 | 12:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Sensor Frozen By Ice Storm |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The wind speed sensor was frozen stopped by ice from a storm. The wind speed and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-18 | 19:30:00 | 2017-01-20 | 18:30:00 | Incorrect |
| 2017-01-14 | 14:00:00 | 2017-01-14 | 14:30:00 | Incorrect |
| 2017-01-14 | 23:00:00 | 2017-01-15 | 08:00:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Sensible and latent heat fluxes were incorrect when the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-05-23 | 00:00:00 | 2016-08-02 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Barometric Pressure Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | The barometric pressure did not trend well with the MET system barometric pressure. However, the sensible and latent heat fluxes were not deleteriously affected by the small differences of the EBBR barometric pressure from the MET barometric pressure. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-27 | 12:00:00 | 2015-11-29 | 10:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Sensible and Latent Heat Fluxes were incorrect during this period because icing of the AEM prevented it from exchanging. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-02-25 | 04:30:00 | 2005-02-25 | 11:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed and Direction Frozen by Ice Storm |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind speed and direction sensors were frozen by ice from and ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-12-03 | 05:35:00 | 1999-12-03 | 06:00:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E18 Data Incorrect After Lightning Strike |
|---|---|
| Affected Datastreams: | sgp15ebbrE18.b1 |
| Description | Immediately after the 3 December 99 lightning strike, all data from this EBBR system was incorrect. The system crashed at the end of this period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2009-01-26 | 21:50:00 | 2009-01-29 | 15:50:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Speed Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The wind speed sensor was frozen stopped and thus wind speed was incorrect during this period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-10-23 | 13:55:00 | 1997-10-23 | 14:20:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - 3 Month Check |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2008-04-08 | 06:00:00 | 2008-05-07 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction 50 Degrees High |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The wind direction was offset high about 50 degrees. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-07-02 | 20:30:00 | 2017-07-20 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE36.b1 |
| Description | Wind direction was flat-lined at 135 degrees during the period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-03-01 | 12:30:00 | 2001-03-01 | 12:31:00 | Suspect |
| 2001-03-07 | 18:05:00 | 2001-03-07 | 19:01:00 | Suspect |
| 2001-02-01 | 00:00:00 | 2001-02-22 | 05:31:00 | Suspect |
| Subject: | SGP EBBR E20 - E20 EBBR Soil Heat Flow #4 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The SHF #4 produced large negative values during much of the period because of a broken lead wire. Inspect the data to determine the times of incorrect SHF #4 values. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-09-30 | 15:30:00 | 2013-12-10 | 18:00:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Intermittent spikes in soil temp 1 |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil Temperature 1 spikes upward at times, sometimes affecting the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-03 | 22:55:00 | 2001-04-03 | 23:41:00 | Incorrect |
| 2001-10-18 | 14:21:00 | 2001-10-18 | 16:01:00 | Incorrect |
| Subject: | SGP EBBR E18 - E18 EBBR Data Incorrect During 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The data was incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-01-06 | 20:00:00 | 2000-03-06 | 19:01:00 | Incorrect |
| 2000-03-06 | 19:30:00 | 2000-03-06 | 20:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Soil Heat Flow #3 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Heat Flow #3 was incorrect during the indicated periods. Average soil heat flux, latent heat flux, and sensible heat flux were therefore also incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-09-15 | 16:00:00 | 1994-09-29 | 14:30:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Net Radiometer Hemisphere Changes |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The upper hemisphere of the net radiometer at the site was punctured allowing water to collect in the lower (and sometimes upper) section of the sensor. The punctures are most likely the result of migratory birds (a problem that we have experienced almost every year here at ANL also). The punctures (and water in some net radiometers) did not result in obvious invalidation of the data. Whether there is water in the lower hemisphere or not, a small puncture of the upper hemisphere would not have a major effect on the net radiation measurement. Significant amounts of water in the lower hemisphere should have a major effect on nighttime measurements particularly, although that effect is hard to detect in the data. The date when the puncture occurred is approximate - but is certainly no more than two weeks before the hemisphere was replaced. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-04-05 | 00:00:00 | 2013-04-11 | 17:30:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Soil temp 1 erratic |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil temperature sensor 1 produced erratic data at times; sensible and latent heat fluxes were incorrect at these times. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-09-21 | 13:30:00 | 1999-09-22 | 03:00:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E18 Net Radiation Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The net radiometer top dome was broken and water had entered. Net radiation values are therefore incorrect during the period. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-07-09 | 17:45:00 | 2004-08-04 | 19:15:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Wind Direction Stuck at 100 Degrees |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The wind direction sensor was stuck at about 100 degrees. This did not affect the primary measurements (net radiation, soil heat flow, sensible heat flux, latent heat flux). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-06-28 | 13:00:00 | 2004-07-28 | 15:00:00 | Note |
| Subject: | SGP/EBBR/E18 - Soil Temperature and Moisture Probes in Set #1 Spiked Outputs |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil moisture #1 and soil temperature #1 occasionally spiked at the same time. Little sensible and latent heat flux data were affected. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-11-25 | 17:35:00 | 1998-12-29 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Version 6 of the CR10 program was installed during this period instead of version 7 (the initial version 7 program did not work). The calibrations and coefficients in version 6 were incorrect; therefore all data during this period is of questionable quality and e and h are clearly incorrect. The correct version 7 program was installed on 29 Dec 1998. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-02-18 | 04:00:00 | 2006-02-18 | 20:30:00 | Incorrect |
| 2006-01-22 | 00:00:00 | 2006-01-26 | 05:30:00 | Incorrect |
| 2006-03-31 | 05:30:00 | 2006-03-31 | 09:00:00 | Incorrect |
| 2006-02-20 | 02:00:00 | 2006-02-24 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Speed Zero |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | Wind Speed was zero, presumably because the sensor was frozen stopped during freezing rain. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-02 | 08:05:00 | 1999-01-02 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2014-06-01 | 11:30:00 | 2014-06-24 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | The AEM was not working, resulting in incorrect sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-07-22 | 12:00:00 | 1994-08-04 | 16:00:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Stopped Ventilation Fan |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | On August 4, 1994, a site operator discovered the ventilation fan of the EBBR to be stopped; the fan guard was clogged with animal remains. Inspection of the EBBR data from Pawhuska, OK, E12 indicates that this condition occurred from July 22 through August 4. Lack of ventilation of the temperature and relative humidity sensors attached to the AEM results in questionable measurements of air temperature, relative humidity, and all quantities calculated from them, including sensible and latent heat fluxes. The quantities that are questionable for the period indicated are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, and vp_bot 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-04-01 | 21:45:00 | 2003-04-01 | 22:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - AEM Hung |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The AEM was hung inbetween home positions, causing many measurements to be incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-09-30 | 00:00:00 | 2003-10-01 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Water in Net Radiometer, Surface Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The net radiometer top dome was punctured by migrating birds. This alone does not cause incorrect net radiation measurements. However, when it subsequently rains, water collects in the bottom dome, causing the net radiation measurements to be too large during the day and too small at night. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-04-25 | 22:30:00 | 2002-06-30 | 23:56:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The wind direction measurement was zero, in the 50s, or always less than 180 degrees. A DQPR has been issued to resolve the problem. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-08-30 | 15:00:00 | 2003-09-02 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Water in Net Radiometer; Surface Fluxes are Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The net radiometer top dome was punctured by migrating birds. This alone does not cause incorrect net radiation measurements. However, when it subsequently rains, water collects in the bottom dome, causing the net radiation measurements to be too large during the day and too small at night. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-04-09 | 21:20:00 | 1997-04-09 | 21:44:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - EBBR Biannual Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-10-23 | 19:55:00 | 1997-10-23 | 20:15:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - 3-Month Check |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-02-22 | 03:00:00 | 2006-02-25 | 16:30:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Suspect Measurements |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | Some measurements may be incorrect because of low supply voltage. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-04-30 | 15:40:00 | 2002-04-30 | 16:11:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The indicated measurements were incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-04-05 | 12:00:00 | 2013-04-15 | 17:00:00 | Incorrect |
| 2013-03-01 | 00:00:00 | 2013-03-04 | 17:30:00 | Incorrect |
| 2013-02-20 | 12:30:00 | 2013-02-28 | 23:30:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - AEM failure |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | The AEM mechanism failed; sensible and latent heat fluxes were incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-03-01 | 23:30:00 | 2005-03-30 | 00:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Average Soil Heat Flux Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | A typo in the version 9 EBBR program caused average soil heat flow to be zero, resulting in both sensible and latent heat fluxes being approximately 20 watts per meter squared too large during the middle of the day. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-03-30 | 20:00:00 | 2005-04-13 | 17:00:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Wrong Datalogger Program Installed |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | ts4 went offscale and sm4 dropped to a constant 16% when a "new" program was installed on 3/30/05. The wrong program was installed. Because ts4 did not change with time, it did not mess up the calculation of e and h. e and h are slightly overestimated, but only by about 1%, far less than the system error. This is a rare type of instrument problem where the concequences are minimal. Therefore, e and h are not listed as incorrect in this DQR and are still usable during the stated period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-08-26 | 00:00:00 | 2012-12-12 | 19:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and latent heat fluxes intermittently incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil temperature 1 and soil moisture 1 fluctuated unnaturally, spiking to large values at times. Sensible and latent heat flux measurements were therefore sometimes incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-27 | 00:00:00 | 2015-11-30 | 23:59:59 | Note |
| Subject: | SGP ALL INSTRUMENTS - Icing Event |
|---|---|
| Affected Datastreams: | sgp30baebbrE35.c1 |
| Description | An icing event (winter storm Cara) passed slowly through the area during this time frame. Instruments at the SGP may have been affected by ice accumulation. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-06-01 | 07:00:00 | 2015-06-10 | 15:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Sensible and latent heat fluxes incorrect at times when AEM not working properly. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-04-23 | 00:20:00 | 1995-04-26 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | For most of the period above, a malfunction in the E12 EBBR wind direction sensor caused the following data values to be incorrect: 5 minute: res_ws, wind_d, and sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, and sigma_wd. Wind direction normally indicated near north or 135 degrees (the latter indicates a malfunction). The wind direction sensor (S/N 3036) was replaced with S/N 3034 at 1620 GMT on April 26, 1995. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-07-20 | 17:00:00 | 1995-09-14 | 23:59:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM Failure |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | As noted in a previous DQR, the home signal values at E12, Pawhuska, OK began decreasing in July. At the beginning of the period listed, the home 30 value dropped below 15; this causes a data quality message to be output in the site operations log as the stated acceptable range for home 30 is 15 to 34.999999. No data is incorrect as a result of this condition. The home 15 value dropped below 35 beginning July 21, 1995, sometime after 2000 GMT; this causes a data quality message to be output in the site operations log as the stated acceptable range for home 15 is 35 to 70. Data is incorrect as a result of this condition, that being 30 minute e, h, and bowen. The home values frequently dropped below their proper levels until 10 August, 1995, at some time after 1100 GMT, when the set screws in the AEM would no longer hold and the aspirator units were stranded inbetween the home positions. Thereafter, the reported home signals were negative. All 30 minute e, h, and bowen data are incorrect for this condition. On August 16, 1995, at about 1600 GMT, site operators determined that they could not repair the AEM on-site and they determined that the replacement AEM that they took with them has an electronic short. Therefore, the AEM was left in manual mode (no exchange). Replacement of the AEM will not take place until a working spare is available and all 30 minute e, h, and bowen data will be incorrect until then. I will submit another DQR or addendum when successful replacement of the AEM is accomplished. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-02-19 | 22:12:00 | 2004-03-10 | 22:47:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Incorrect Times |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The ntpd server (time adjustment) stopped working on Feb. 19th at 22:12:16 GMT, and the clock was corrected by -5600.177269 seconds on March 10th at 22:47 GMT. The recorded times for observations are off by amounts ranging from 0 seconds on Feb. 19th to 5600 seconds on March 10th. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-18 | 06:45:00 | 2000-12-18 | 11:01:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - E12 EBBR Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind direction vane was frozen stopped in one direction by icing. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-03-31 | 11:15:00 | 2001-03-31 | 14:01:00 | Incorrect |
| 2001-03-30 | 06:15:00 | 2001-03-30 | 14:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Incorrect Data |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Some measurements were incorrect because the battery voltage was low. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-11-15 | 20:31:00 | 2000-11-15 | 21:01:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Data Incorrect During STP #3 Replacement |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | All data was incorrect during replacement of soil temperature probe #3. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-12-21 | 02:45:00 | 1998-12-22 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Data Incorrect (revised) |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-07-08 | 07:30:00 | 2010-07-29 | 11:00:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Because of a periodic AEM failure, home signal 30 was often stuck at the home signal 15 position. These occurrences resulted in incorrect latent and sensible heat flux values at times. Some missing data occurred because of low battery voltage (the CR10 program stops running when battery voltage is insufficient. The data outage events were preceded and followed by several hours of bad/suspicious data. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-11-24 | 13:15:00 | 1998-11-24 | 15:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - All Temperature Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Failure of the multiplexer connection for the reference temperature thermocouple in the control box or a problem with the Campbell CR10 bridge circuitry caused all air and soil temperature measurements to be incorrect. Therefore, the computed 30 minute bowen, e, and h were also incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-07 | 18:05:00 | 1999-01-09 | 03:30:00 | Suspect |
| Subject: | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-01-04 | 04:00:00 | 2015-01-12 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and Latent Heat Fluxes were incorrect because the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-10-23 | 02:15:00 | 2002-10-30 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Battery voltage low |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | When Battery Voltage drops below 10.5 volts, most measurements are suspect and some are often incorrect. The user will need to inspect the data carefully to determine the useability of the data. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-09-27 | 18:00:00 | 2003-12-10 | 22:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature Probe #1 Measurements Spiked |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The soil temperature #1 measurement spiked quite high at times. This affected a number of measurements that are dependent on the soil temperature measurements. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-04-07 | 01:30:00 | 1998-05-21 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Sensor Failure |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind direction sensor failed, producing zero values. The cause is unknown. Data values affected are below: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 Minute: res_ws, wind_d, sigma_wd |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-12-22 | 01:00:00 | 2002-12-22 | 01:30:00 | Incorrect |
| 2002-12-21 | 16:30:00 | 2002-12-21 | 17:30:00 | Incorrect |
| 2002-12-20 | 18:30:00 | 2002-12-20 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #1 and Soil Heat Flow #5 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Temperature #1 and Soil Heat Flow #5 were incorrect during these periods. The indicated calculated measurements are also incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-13 | 11:00:00 | 2017-01-18 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Sensible and latent heat fluxes were incorrect while the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-02-20 | 17:45:00 | 2002-02-20 | 19:01:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Measurements Incorrect During Sensor Changeout |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The replacement of soil heat flow 2 caused the loss of initial soil temperature values used in the calculation of CES, G, C, ave_shf, bowen, e, and h. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-10-16 | 21:00:00 | 2015-11-18 | 21:35:00 | Missing |
| Subject: | SGP/EBBR/E40 - Missing Data |
|---|---|
| Affected Datastreams: | sgp30ebbrE40.b1 |
| Description | Data are not available |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-01-01 | 00:00:00 | 2003-01-08 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Soil Heat Flow#5 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Heat Flow #5 was producing incorrect values. Average soil heat flow, sensible heat flux, and latent heat flux were affected. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-09-02 | 11:00:00 | 2005-09-15 | 22:30:00 | Incorrect |
| 2005-08-23 | 19:00:00 | 2005-08-31 | 17:00:00 | Incorrect |
| 2005-09-01 | 17:30:00 | 2005-09-02 | 03:00:00 | Incorrect |
| 2005-07-05 | 17:30:00 | 2005-07-06 | 19:30:00 | Incorrect |
| 2005-09-16 | 01:00:00 | 2005-09-28 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Soil Temperature and Soil Moisture #4 Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The ts4 sensor reported 99999 values because the sensor leads were loose. Soil moisture #4 reported low values (steady 16%) during this time period. The sensible and latent heat fluxes were not affected by this problem, only soil temperature and soil moisture #4. See soil temperatures and soil moistures from sets #2, #3, and #5 for correct values (note: soil temperature #1 was having problems during the same time). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-09-24 | 17:15:00 | 1996-09-24 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Left Air Temperature Thermocouple Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The left air temperature thermocouple was offscale, for unknown reasons, for 1715 GMT for 15 minute, and 1730 GMT for 30 minute air temperature values. The malfunction of the air temperature thermocouple results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the period indicated. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_l 30 minute: tair_top, tair_bot, bowen, e, and h |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-11-28 | 20:45:00 | 2002-01-23 | 18:01:00 | Suspect |
| Subject: | SGP/EBBR/E20 - AEM Hung |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The automatic exchange mechanism frequently hung in one position. The home signals and automated qc in the netcdf data files indicate when this occurred. Bowen ratio, sensible heat flux, and latent heat flux are incorrect for this condition. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-15 | 15:00:00 | 2001-10-17 | 02:01:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During the indicated period, TS #3 was large negative or positive or offscale. Average soil heat flow, sensible heat flux, and latent heat flux were incorrect when TS #3 was incorrect. Inspect the 15 and 30 minute TS #3 data to determine the times of incorrect data. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-15 | 04:00:00 | 2017-01-15 | 19:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Wind Speed and Direction Frozen |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Wind speed and direction frozen by an ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-11-28 | 14:30:00 | 2004-01-21 | 21:30:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Pressure Sensor Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The E20 pressure sensor suffered from spikes in pressure, which were related to increases in voltage during the day as the solar panels charged the battery. These spikes were not of a magnitude that would affect the 30 minute surface fluxes. Replacement of the pressure sensor solved the problem. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-14 | 01:30:00 | 2003-10-14 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Water in Net Radiometer, Surface Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The net radiometer top dome was punctured by migrating birds. This alone does not cause incorrect net radiation measurements. However, when it subsequently rains, water collects in the bottom dome, causing the net radiation measurements to be too large during the day and too small at night. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-10-14 | 14:00:00 | 2014-01-02 | 17:30:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Multiplexer/datalogger problems |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The AEM did not operate correctly at times. Sensible and latent heat fluxes were sometimes affected. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-03-27 | 13:00:00 | 2016-04-12 | 15:00:00 | Suspect |
| Subject: | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes and Net Radiation Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | The top dome of the net radiometer was broken, causing incorrect net radiation, sensible heat flux, and latent heat flux measurements. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-01-19 | 17:00:00 | 2012-02-12 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Soil heat flux #4 intermittently incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil heat flux #4 measurements were sometimes incorrect and sometimes affected the sensible and latent heat flux calculations. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-11 | 10:00:00 | 2000-12-13 | 17:01:00 | Incorrect |
| Subject: | SGP EBBR E18 - E18 EBBR Wind Direction Frozen |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The wind direction sensor was frozen stopped. The indicated measurements are incorrect as a result. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2007-07-10 | 15:00:00 | 2007-09-12 | 20:45:00 | Note |
| Subject: | SGP/EBBR/E20 - Reprocessing Notice (RID 449) |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | See below for details of reprocessing that was completed on 20150310. Original DQR category: 4 (Red, Incorrect). ----------------------------------------------------------- The EBBR wind direction was found to be misaligned 20 degrees low. This bias should have had no effect on the res_ws or sigma_wd measurements. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-11-01 | 00:00:00 | 2002-03-29 | 16:31:00 | Suspect |
| Subject: | SGP/EBBR/E18 - Version 6 Produced Noisy Fluxes |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Version 6 of the CR10 program produced noisy latent and sensible heat fluxes. That ended on March 29 after a recalibration unit was installed with version 8. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-04-15 | 16:30:00 | 2003-04-15 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-07 | 00:10:00 | 2005-01-07 | 15:50:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Wind Direction Frozen Stopped By Ice Storm |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-10-08 | 20:30:00 | 1999-06-17 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Pressure Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The pressure sensor was replaced at E18 EBBR without the replacement being noted by Site Ops and therefore without an indication of serial number and thus correct calibration. The serial number of the sensor was observed during a PM (after months of confusion concerning the thing) and a several month search for the calibration sheet at ANL, the CF, and the manufacturer ensued. The sheet was finally found and I confirmed that an incorrect offset was being used (the same as used for the previous sensor). This is an easy error to make as there are two models of pressure sensors (with different calibration ranges) being used in the EBBR systems. On June 17, 1999 the correct offset was entered into the CR10 and storage module programming. The pressure for the period should be increased by 6.757 kPa. The result of the error is that Bowen ratio was underestimated by 6.8% on average, Latent Heat Flux was overestimated by 3.6% on average, and Sensible Heat Flux was underestimated by 3.6% on average. The errors in the fluxes are smaller than the estimated 10% error in the Bowen ratio flux measurement technique and therefore the data does not need to be reprocessed. Anyone performing area averages of pressure or looking at the variation in pressure over the CART Site should adjust the E18 EBBR pressure values for this period using the offset error indicated above. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-02-28 | 19:00:00 | 2015-03-11 | 14:30:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and latent heat fluxes were incorrect when the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-06-12 | 14:30:00 | 2002-06-12 | 15:01:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | All measurements were incorrect or offscale for an unknown reason. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-15 | 00:00:00 | 2005-07-22 | 23:59:00 | Note |
| Subject: | SGP/EBBR/E20 - metadata corrections |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E20 data collected by ARM back to the installation of the instrument in April 1993. Please see the current metadata for correct information. These changes do not affect data values or quality. The changes are summarized below: 1) Update of "sensor location" information 2) Addition of installation dates for the systems 3) Correction of soil moisture units (from "by volume" to "gravimetric") |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2011-09-28 | 06:00:00 | 2011-11-21 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and latent heat fluxes incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | The AEM did not operate. Therefore sensible and latent heat fluxes were incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-04 | 08:00:00 | 2017-01-06 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Sensible and latent heat fluxes, and Bowen ratio incorrect while the AEM was not working properly. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-12-12 | 19:15:00 | 2001-12-12 | 20:31:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #3 Incorrect During Sensor Changeout |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil heat flow #3 measurements were incorrect during it's replacement. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g5)/2 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) Note: during the time period referenced here, soil heat flow #4 and #2 were also incorrect. This quality information is documented in D020717.46, D020717.47 and D020726.1. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-08 | 10:05:00 | 1999-01-08 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The wind direction sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-05-18 | 18:30:00 | 2015-05-20 | 20:30:00 | Missing |
| 2015-05-14 | 11:00:00 | 2015-05-18 | 16:30:00 | Missing |
| Subject: | SGP/EBBR/E12 - Missing Data |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | All data missing for these periods. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2014-06-05 | 21:00:00 | 2014-06-26 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Sensible and Latent heat fluxes were incorrect when the AEM was not switching. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-11 | 10:40:00 | 2005-01-12 | 04:10:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-12-27 | 17:30:00 | 2006-01-02 | 23:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect at Times |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Large spikes in soil temperature #2 are causing the soil heat storage term to blow up, and thus the average soil heat flow, sensible heat flux, and latent heat flux to be incorrect at times. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-27 | 21:30:00 | 2015-11-28 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Sensible and latent heat fluxes incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Sensible and latent heat fluxes were incorrect when the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-02-02 | 05:05:00 | 2004-02-02 | 18:45:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-08-03 | 03:00:00 | 2004-09-15 | 20:00:00 | Incorrect |
| 2004-09-24 | 07:00:00 | 2004-09-29 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - AEM Failure |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The AEM hung inbetween positions; home signals were zero. The AEM fuse kept blowing, most likely because of worn rails or sleeves. This condition may reoccur. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-07-28 | 17:30:00 | 2000-07-28 | 17:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - E18 EBBR Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The EBBR data was incorrect just after power was restored. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-01-23 | 22:00:00 | 2013-01-24 | 17:13:00 | Incorrect |
| 2013-01-31 | 16:00:00 | 2013-01-31 | 18:00:00 | Incorrect |
| 2013-02-21 | 04:00:00 | 2013-02-28 | 16:30:00 | Incorrect |
| 2013-01-30 | 14:00:00 | 2013-01-30 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM failure |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | An AEM failure caused incorrect sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-02-02 | 05:35:00 | 2004-02-02 | 17:55:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-10-22 | 16:45:00 | 1997-10-22 | 17:05:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - 3 Month Check |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-07-08 | 00:00:00 | 2002-07-09 | 13:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Resistance-based Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | When the Reference Temperature in the EBBR enclosure is not reported correctly, it affects all resistance-based measurements that are adjusted with the temperature of the reference junction. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2008-04-15 | 00:30:00 | 2008-05-06 | 21:10:00 | Suspect |
| Subject: | SGP/EBBR/E18 - Soil Heat Flow #4 Offscale Low; Sensible and Latent Heat Flux Sometimes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil heat flow #4 was sometimes lower than the lower limit imposed in the EBBR programming; sensible and latent heat flux were therefore deemed to be suspect during those times. The cause of the low values is not clear, but the values are not reasonable for the vegetation type at EF18. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-05 | 14:20:00 | 2005-01-07 | 16:50:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Frozen Stopped By Ice Storm |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-27 | 13:30:00 | 2015-12-17 | 17:45:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Sensible and latent heat fluxes were incorrrect while the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-12-03 | 05:30:00 | 2003-12-23 | 21:40:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Wind direction is incorrect, reading at or about 0 or 15 to 25 degrees. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-01-22 | 16:15:00 | 2002-01-22 | 16:31:00 | Incorrect |
| 2001-12-24 | 20:15:00 | 2001-12-24 | 20:31:00 | Incorrect |
| 2002-04-06 | 00:30:00 | 2002-04-17 | 14:01:00 | Incorrect |
| 2002-04-18 | 22:30:00 | 2002-04-30 | 20:31:00 | Incorrect |
| 2002-05-01 | 03:00:00 | 2002-05-28 | 20:31:00 | Incorrect |
| 2001-11-29 | 14:15:00 | 2001-11-30 | 04:31:00 | Incorrect |
| 2002-01-28 | 13:45:00 | 2002-01-28 | 14:01:00 | Incorrect |
| 2001-11-14 | 19:45:00 | 2001-11-14 | 20:01:00 | Incorrect |
| 2001-12-03 | 00:45:00 | 2001-12-03 | 01:01:00 | Incorrect |
| 2002-02-25 | 23:45:00 | 2002-02-26 | 00:01:00 | Incorrect |
| 2001-12-25 | 19:15:00 | 2001-12-25 | 20:31:00 | Incorrect |
| 2002-01-18 | 01:15:00 | 2002-01-18 | 02:01:00 | Incorrect |
| 2001-11-25 | 02:15:00 | 2001-11-25 | 19:01:00 | Incorrect |
| 2001-12-02 | 01:45:00 | 2001-12-02 | 02:01:00 | Incorrect |
| 2002-03-14 | 15:15:00 | 2002-03-29 | 18:31:00 | Incorrect |
| 2002-02-13 | 22:15:00 | 2002-02-14 | 08:01:00 | Incorrect |
| 2002-01-24 | 21:15:00 | 2002-01-24 | 21:31:00 | Incorrect |
| 2001-11-28 | 11:45:00 | 2001-11-28 | 15:01:00 | Incorrect |
| 2001-11-29 | 07:45:00 | 2001-11-29 | 09:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - AEM Hung |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The automatic exchange mechanism did not work properly for a number of time periods. The Bowen ratio, latent heat flux, and sensible heat flux were incorrect also during this condition. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-06-18 | 17:15:00 | 1999-06-18 | 17:45:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E20 Thermocouple Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Left and right thermocouple air temperature data are incorrect during the replacement of the right thermocouple. Affected data are: 5 minute: tair_bot, tair_top 15 minute: tai_r, tair_l 30 minute: tair_bot, tair_top, e, h, bowen |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-02-02 | 08:10:00 | 2004-02-02 | 19:30:00 | Incorrect |
| 2004-02-09 | 12:35:00 | 2004-02-09 | 14:05:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-02-28 | 20:30:00 | 2015-03-10 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The AEM stopped working, resulting in sensible and latent heat fluxes being incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-20 | 16:00:00 | 2002-08-20 | 16:30:00 | Incorrect |
| 2002-11-25 | 18:15:00 | 2002-11-25 | 18:45:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Data Incorrect during 6 month checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | Some of the measurements are incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-12-28 | 13:45:00 | 1998-12-28 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Temperature, RH, and Vapor Pressure Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The right aspirator housing fell off of the AEM around 1345 GMT, by looking at the data. The housing was put back into place later in the day during a PM visit. The following values were affected: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_r, mv_hum_r, tair_r 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-02-21 | 20:00:00 | 2001-03-07 | 19:01:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Soil Heat Flow #2 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Broken leads for SHF #2 caused measurements from it to be incorrect during the indicated period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2008-05-06 | 12:15:00 | 2008-06-17 | 21:20:00 | Suspect |
| Subject: | SGP/EBBR/E18 - SHF #4 Measurements Too Low; Sensible and Latent Heat Fluxes Suspect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil heat flow #4 was replaced at the beginning of this period. However, the soil heat flow measurements from that sensor were sometimes still lower than the lower limit imposed in the EBBR programming; sensible and latent heat flux were therefore deemed to be suspect during those times. The cause of the low values could not be determined, but the values are not reasonable for the vegetation type at EF18. To remedy the situation, the soil heat flow sensor calibration was changed so that the sensor provided measurements that resembled the other four soil heat flow sensor measurements. Soil heat flow measurements have been reasonable since the calibration change. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-29 | 22:00:00 | 2003-10-29 | 22:45:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-09-03 | 19:00:00 | 1994-09-15 | 13:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Low home_15 Values |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The home signal values for the EBBR system installed at E12, Pawhuska, OK have generally been lower than for the other EBBR systems. However, during the period above the home_15 value was often lower than 35, which is then improperly interpreted by the CR10 software. A home_15 value less than 35 is interpreted as meaning that the AEM aspirated housings (which hold the temperature and relative humidity sensors) are in the opposite orientation to what they actually are. The AEM continues to exchange properly, but the resulting calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect. On September 15, 1994 Site Operations personnel refurbished the wiring for the left housing and the home_15 signal returned to proper levels. When 30 minute home_15 values are below 35, the data fields listed below are incorrect. 5 minute: home, tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: mv_home 30 minute: home_15, tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, Bowen, e, h It is possible to recalculate the Bowen ratio, e, and h by using the 15 minute data to compute the correct gradients of temperature and relative humidity (two 15 minute periods are averaged to give a half hour value); the orientation of the AEM is obvious in the 15 minute data, based on the home signal (which is largest for the first 15 minutes of the half hour). More information on performing this recalculation can be obtained from the mentor. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-01-30 | 14:30:00 | 2002-01-30 | 14:31:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil moisture measurements from sets 2 and 5 were incorrect, leading to many other incorrect measurements calculated using them. Average soil heat flow, sensible heat flux, and latent heat flux are affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g3 + g4)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) Note: D020717.6 reports Soil temperature sensor #3 was also bad during this time, but for the very specific records affected by the soil moisture #2 and #5 reporting incorrectly, soil temp #3 was okay. Therefore the equations given are correct. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-12-18 | 17:00:00 | 1997-12-31 | 16:15:00 | Suspect |
| Subject: | SGP/EBBR/E12 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The upper dome of the EBBR net radiometers was punctured. After the puncture, water collected in the top and/or bottom dome. The water was removed and the dome was replaced during PM visits. In some cases, the puncture and water resulted in incorrect data. Comparison with net radiation values from surrounding EBBR sites and the SIRS is neccesary to determine if the EBBR net radiation data are correct or incorrect. It is often difficult to tell from the data when the punctures occurred, but they would have existed for no more than 2 weeks, since the domes are checked during each two-weekly PM visit. Incorrect net radiation data results in the latent heat flux and sensible heat flux also being incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-02-15 | 06:20:00 | 2001-02-17 | 20:06:00 | Incorrect |
| Subject: | SGP EBBR E18 - E18 EBBR Wind Speed Frozen, Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The wind speed sensor was frozen stopped. The indicated data are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-09-29 | 15:30:00 | 1994-09-29 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Aspirator Fan Stoppage |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During Site Operations Preventative Maintenance activities the left AEM fan stopped operating. This affected some of the data being collected. The times of incorrect values are listed below. 15 minute: 1530-1715 GMT; tair_l, mv_hum_l, rr_thum_l 30 minute: 1530-1730 GMT; thum_top, thum_bot, tair_top, tair_bot, hum_top, hum_bot, e, h, bowen |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-06-10 | 12:00:00 | 2010-06-23 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Other Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The power supply leads for the combined temperature probe shorted somehow, resulting in several measurements from the probe and for the multiplexer that it was connected to, to be incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-04-16 | 19:50:00 | 2003-04-16 | 20:45:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-12-09 | 22:35:00 | 2003-12-10 | 17:05:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Sensor Frozen By Ice Storm |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind speed sensor was frozen stopped by ice from a storm. The wind speed and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-11-10 | 00:30:00 | 1995-11-10 | 15:30:00 | Note |
| Subject: | SGP/EBBR/E20 - Soil Heat Flow Zero Under Unchanging Conditions |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | This DQR is written to inform users of the data that the EBBR soil heat flow measurements of zero during much of 11 November 1995 at E20, Meeker, OK are correct values. Nearly unchanging conditions of net radiation, air temperature, and soil moisture, plus high wind speeds and near neutral atmospheric stability, resulted in almost unchanging conditions of soil temperature and ten and a half hours of zero soil heat flow output from all soil heat flow plates (some plates outputted zero for longer than this). The change in energy storage (determined from the change in temperature with time of the soil above the plates) was very nearly zero also during the period of interest. Such an extended period of zero soil heat flow and the accompanying unchanging soil and atmospheric conditions is quite rare and therefore worth noting here in case someone using the data might mistakenly think that the data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-02-21 | 15:30:00 | 2012-02-22 | 20:30:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Sensible and latent heat fluxes were incorrect when soil heat flow #4 was incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-01-08 | 21:00:00 | 2003-01-08 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Soil Storage Incorrect After Startup |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | For the half hour data after CR10 datalogger startup, stored soil temperature values do not exist from the beginning of the half hour. Therefore soil heat storage can not be calculated correctly. This affects numerous measurements that are calculated using soil heat storage. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-01 | 00:00:00 | 2005-03-29 | 18:30:00 | Note |
| Subject: | SGP/EBBR/E12 - Improved EBBR CR10 Program |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Effective 20050329.1830, the EBBR.E12 CR10 program was revised to improve the quality of the primary measurements as follows: 1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow. This is applied to the individual soil sets. Measurements outside the limits are rejected and the measurements within the limits are used to calculate the average soil heat flow. 2) Max and min limits are used to determine incorrect values of net radiation, sensible heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal. If AEM signal is outside the limits, h and e are set to 999s. If net radiation is outside the limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s. Virtually no incorrect soil measurement will affect the primary measurements of h and e. By setting h and e to 999s, it can be easily seen that the primary variables are incorrect; no other interpretation is possible. Prior to 20050329, the improved CR10 program was NOT in effect. DQRs have been submitted for known instances of incorrect soil measurements which affected the quality of the primary measurements of h and e. Note: the DQR begin date is the begin date of the sgp30ebbrE12.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE12.a1). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-10-01 | 00:00:00 | 1996-05-08 | 17:55:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Temperature/RH Probes Malfunction and Replacement |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | Beginning on approximately October 1, 1996 the calibration of the temperature sensor in one or both T/RH probes began to drift; temperatures started to drift higher than the thermocouple probes. This drift caused the upper and lower temperatures measured by the T/RH probe to be 2 to 10 degrees C greater than the thermocouple probes. Comparison with adjacent EBBR sites shows that the thermocouples were measuring properly. The problem affected the vapor pressure outputs primarily, making them as much as 1 kPa greater than they should be (vapor pressure is calculated from probe temperature and relative humidity). The effect on sensible and latent heat fluxes was negligible, although latent heat flux may be overestimated by about 5% presently and sensible heat flux underestimated by approximately the same percentage. Site operations replaced the T/RH probes on 8 May 1996; the new probes are performing well. The serial numbers of replaced probes are: Left 632415, Right 632356. New probe serial numbers are: Left 460428, Right 460412. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-06-04 | 16:30:00 | 1999-06-04 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - RH top Data Zero |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The one data value hum_top was incorrect in the 30 minute data. 5 and 15 minute data were not affected, and the 30 minute flux data was not affected. The data value may have been lost in remote data retrieval, resulting in a zero value instead. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-12-08 | 11:00:00 | 2005-12-08 | 13:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Multiplexer failure |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Sensible and latent heat fluxes are incorrect during a period when multiplexer #2 experienced a failure. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-28 | 17:50:00 | 2003-10-28 | 18:45:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-05 | 07:35:00 | 2005-01-08 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice Storm |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-12-17 | 17:00:00 | 1999-12-27 | 18:45:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E12 Net Radiation Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Condensation inside the domes (possibly water in the bottom dome also) during the period made daytime net radiation values as much as 50% too large and nighttime net radiations as much as 100% too small. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-05-06 | 16:00:00 | 1994-06-09 | 15:45:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Soil Moisture Probe |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Beginning on May 6, 1994, soil moisture probe #3 began a long decline in output and sensitivity until it stabilized at a low value of around 7, with virtually no sensitivity at midday (GMT) on May 22, 1994. The output remained around this low value until the probe was replaced on June 9, 1994 at 1545 GMT. Old Probe S/N 92038, New Probe S/N 93003. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-25 | 15:45:00 | 2000-12-28 | 21:45:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - EBBR E20 Wind Speed Iced |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The anemometer was frozen stopped by freezing rain. Indicated data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-06-28 | 18:00:00 | 2002-07-07 | 23:56:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Resistance Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | All sensors that depend on resistance measurements are incorrect. Average soil heat flow, sensible heat flux, and latent heat flux are incorrect as a result. This condition normally occurs when the reference temperature sensor is disconnected or bad. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-11-25 | 22:15:00 | 2002-11-25 | 22:45:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Data Incorrect during 6 month checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Some of the measurements are incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-01 | 00:00:00 | 2005-03-30 | 00:00:00 | Note |
| Subject: | SGP/EBBR/E18 - Improved EBBR CR10 Program |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Effective 20050330.0000, the EBBR.E18 CR10 program was revised to improve the quality of the primary measurements as follows: 1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow. This is applied to the individual soil sets. Measurements outside the limits are rejected and the measurements within the limits are used to calculate the average soil heat flow. 2) Max and min limits are used to determine incorrect values of net radiation, sensible heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal. If AEM signal is outside the limits, h and e are set to 999s. If net radiation is outside the limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s. Virtually no incorrect soil measurement will affect the primary measurements of h and e. By setting h and e to 999s, it can be easily seen that the primary variables are incorrect; no other interpretation is possible. Prior to 20050330, the improved CR10 program was NOT in effect. DQRs have been submitted for known instances of incorrect soil measurements which affected the quality of the primary measurements of h and e. Note: the DQR begin date is the begin date of the sgp30ebbrE18.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE18.a1). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-01-30 | 12:00:00 | 2002-01-30 | 12:01:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil moisture measurements from sets 4 and 5 were incorrect, leading to many other incorrect measurements calculated using them. Average soil heat flow, sensible heat flux, and latent heat flux are affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g2 + g3)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) Note: D020717.6 reports Soil temperature sensor #3 was also bad during this time, but for the very specific records affected by the soil moisture #4 and #5 reporting incorrectly, soil temp #3 was okay. Therefore the equations given are correct. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-11-01 | 23:00:00 | 2000-11-15 | 20:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Soil Temperature #3 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The indicated measurements were incorrect while soil temperature probe #3 was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-10-19 | 22:15:00 | 1998-10-21 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Incorrect Data - Cattle Vandalism |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Cattle penetrated the electric fence and pulled the aspirator housings from the AEM. Thus T/RH/VP and sensible and latent heat fluxes are incorrect for the period (until 1540 GMT; LE and H through the 30 minute period ending at 1600 GMT) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2011-06-29 | 15:30:00 | 2011-08-03 | 15:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Loose connection (SHF #4) |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil Heat Flow #4 was sometimes offscale due to a bad connection. Sensible and latent heat fluxes also affected at times. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-10-14 | 14:00:00 | 1995-10-14 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - 3-month Check |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-04-10 | 16:52:00 | 1997-04-10 | 17:58:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - EBBR Biannual Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for periods indicated. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-05-31 | 04:30:00 | 2006-06-02 | 21:30:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Sensible and Latent Heat Fluxes and Net Radiation Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The net radiometer dome was cracked and water had gotten in, resulting in incorrect net radiation measurements and therefore incorrect sensible and latent heat flux measurements. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-13 | 21:50:00 | 1999-02-10 | 16:40:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Pressure Low |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The pressure sensor values dropped several kPa on 13 January 1999 because of a sensor malfunction and remained that way until the sensor was replaced on 10 February 1999. Comparison of the pressure before and after the problem period shows that Bowen ratio was underestimated by approximately 6% during the period, resulting in a 6% overestimation of latent heat flux and a 6% underestimation of sensible heat flux. Adjustment of the flux data during the period by these amounts should be made by the data user. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-04-18 | 21:00:00 | 2000-04-18 | 21:01:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - E18 EBBR Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The EBBR data was incorrect while the datalogger was being upgraded/replaced. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-07 | 01:50:00 | 2005-01-07 | 14:25:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction Frozen Stopped By Ice Storm |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-05-22 | 03:30:00 | 2015-05-22 | 12:00:00 | Incorrect |
| 2015-05-20 | 21:00:00 | 2015-05-21 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The fluxes are incorrect when the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-13 | 00:00:00 | 2005-07-22 | 23:59:00 | Note |
| Subject: | SGP/EBBR/E12 - metadata corrections |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E12 data collected by ARM back to the installation of the instrument in August 1993. Please see the current metadata for correct information. These changes do not affect data values or quality. The changes are summarized below: 1) Update of "sensor location" information 2) Addition of installation dates for the systems 3) Correction of soil type 4) Correction of soil moisture units (from "by volume" to "gravimetric") |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-07-14 | 14:30:00 | 2016-07-26 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Net Radiation Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Sensible and latent heat fluxes were incorrect because the measured net radiation was too small. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-14 | 14:00:00 | 2017-01-15 | 19:30:00 | Incorrect |
| 2017-01-13 | 13:00:00 | 2017-01-13 | 19:00:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Wind Speed Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Wind speed was frozen by an ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1993-12-01 | 12:00:00 | 2003-06-18 | 11:59:00 | Note |
| Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header |
|---|---|
| Affected Datastreams: | sgp30ebbrE26.b1 |
| Description | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. (NOTE: The actual begin date of some of these data streams is as early as 7/4/93. This DQR applies to all 30m EBBR data.) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-09-12 | 13:00:00 | 1994-09-14 | 18:47:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Fan Stopped, T and RH Biases |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | Another fan stoppage situation occurred. This is the fourth one in the last few months and may indicate a weakening of the fans that aspirate the temperature, relative humidity housings. The 15 minute data reveals that the stoppage occurred at approximately 1300 GMT on September 12. The left fan was cleaned out by site operations personnel and began running again at 1847 GMT on September 14. The 15 minute data during this period shows that during daytime, the left temperature was greater than the right temperature and that the left relative humidity was lower than the right relative humidity (a consequence of greater temperature), irregardless of the positions of the housings. The bowen ratio, sensible heat flux and latent heat flux for this period, as well as all left housing temperatures and relative humidities are incorrect. The data values that are incorrect are: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_l, mv_hum_l, tair_l, 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, thum_bot, vp_top, vp_bot, bowen, e, h Because of the increased frequency of fan stoppage occurrences, I have submitted a work request to site operations to use the portable vane anemometer to check the flow of the housing fans on each EBBR and visually check (and clean if needed) the fans for debris that would restrict the flow. Included in this work request are instructions for checking the performance of the temperature and relative humidity sensors by manually putting the aspirator housings at the same height for a half hour period (so that two 15 minute and one half hour comparison result). The latter part of the work request is prompted by my close inspection of the Meeker data for the last few weeks. It is clear that significant biases have developed in the pairs of temperature and relative humidity sensors; left thermocouple ~0.5 deg. C greater than right thermocouple, left relative humidity ~5% lower than right relative humidity. Biases were expected in operating the systems over long time periods, and these appear to be the result of simple offsets, not changes in calibrations. At this point, I just want to determine how large the offsets are. Comparison of these offsets between EBBR units, in light of the different lengths of time that EBBR units and individual sensors have been deployed, may provide some interesting information on likely offset changes with time. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-07-27 | 07:30:00 | 2005-08-03 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The net radiometer top dome was broken and water got inside, making the net radiation, and sensible and latent heat flux measurements incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-09-14 | 16:00:00 | 1994-09-29 | 17:35:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Net Radiometer Hemisphere Changes |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The upper hemisphere of the net radiometer at the site was punctured allowing water to collect in the lower (and sometimes upper) section of the sensor. The punctures are most likely the result of migratory birds (a problem that we have experienced almost every year here at ANL also). The punctures (and water in some net radiometers) did not result in obvious invalidation of the data. Whether there is water in the lower hemisphere or not, a small puncture of the upper hemisphere would not have a major effect on the net radiation measurement. Significant amounts of water in the lower hemisphere should have a major effect on nighttime measurements particularly, although that effect is hard to detect in the data. The date when the puncture occurred is approximate - but is certainly no more than two weeks before the hemisphere was replaced. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-13 | 00:00:00 | 2003-11-26 | 23:00:00 | Suspect |
| Subject: | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The barometer output was scaling with supply voltage (i.e. it followed the charging of the battery by the solar panel). NOTE: The barometer was replaced later than the end date of this DQR. Why the problem ended on 26 Nov 2003 is unclear; there was no site ops intervention on that date. The problem did not affect the sensible and latent heat flux calculations beyond the expected system error. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-14 | 23:30:00 | 2017-01-15 | 13:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat Fluxes incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and latent heat fluxes were incorrect while the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-11-23 | 15:15:00 | 1994-11-23 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - T/RH Check |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | During the month of November 1994, site operations personnel conducted field comparisons of the temperature and relative humidity sensors in the EBBRs and the HMI31 portable T/RH meter (with the removable probe). As is reflected in the home signal output, the automatic exchange mechanism was disabled in order to conduct the checks. Measurements were taken every 5 minutes, for a half hour each in the aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated radiation shield to provide the same aspiration as the EBBR sensors received). Measurements of aspirator flow were also recorded. This information was provided to the mentor. The mentor then compared the field checks with the data recorded by the EBBRs. The periods of data and data fields that are incorrect because of the checks are listed below. Times are those at which the data are reported. Data Fields 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h 5 minute: 1515, 1520, 1525, 1530, 1535, 1540, 1545, 1550, 1555, 1600, 1605, 1610 15 minute: 1515, 1530, 1545, 1600, 1615 30 minute: 1530, 1600, 1630 (EDITOR'S NOTE: The following analysis refers to all EBBRs installed in Nov 1994) Results of the T/RH comparisons: The combined accuracy of the HMI31 and EBBR temperature sensors (thermocouples or PRTDs) is +/- 0.4 degrees C. The combined accuracy of the HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH greater than 80%. The combined accuracy for each pair of EBBR sensors of the same type is essentially the same as the quantities stated above. All of the pairs of EBBR sensors show differences that fall within the stated combined accuracies. Although this sounds wonderful, a few of the differences are close to the combined accuracy, which, because of the small differences in temperature being measured (normally smaller than the magnitude of the combined accuracy) could lead to some incorrect estimation of sensible and latent heat flux. However, unless there would be substantial differences of calibration slope of two sensors in a pair, the switching of height of the sensors every 15 minutes by the automatic exchange mechanism will remove the offset between the sensors. The comparisons between the EBBR sensors and the HMI31 T/RH meter showed much larger differences. The range of differences were: -2.4 to 0.0 degrees for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to 6.7 percent for the RH sensors. Six Thermocouples indicated differences from the HMI31 greater than the combined accuracy. Seven PRTDs indicated differences from the HMI31 greater than the combined accuracy. Four RH sensors indicated differences from the HMI31 greater than the combined accuracy. The temperature differences (for both thermocouples and PRTDs) were nearly all of one sign; the HMI31 indicated the greater temperature, which may suggest a bias in the HMI31 temperature measurement, even though a dozen differences of +/- 0.2 degrees were measured. Four differences of zero and only one positive difference (out of 40) were measured. Thirteen of the 20 RH differences were positive (HMI31 indicating the lower RH), with the differences near the level of the combined accuracies being approximately 50% positive and 50% negative. It does not appear that the HMI31 has a RH bias. Plots of EBBR sensor/HMI31 differences as a function of time from the installation of the individual sensors (a range of 10 to 30 months in the field) shows no obvious pattern of sensor drift with time. This is encouraging. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-11-02 | 13:30:00 | 2005-03-02 | 19:30:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Soil Moisture #4 and Soil Temperature #4 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Failures of a multiplexer channel and a J-panel channel caused soil temperature #4 and soil moisture #4 to spike and drift at times. Replacement of the failed equipment solved the problem. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-08-09 | 20:30:00 | 1995-08-16 | 23:59:00 | Note |
| Subject: | SGP/EBBR/E20 - AEM Home 30 Values Low |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The first EBBR to achieve annual calibration changeout was Meeker, Ok, E20. However, soon after changeout on August 9, 1995, the home 30 value dropped below 15, intermittently, to typically 0.3 to 0.5; this causes a data quality message to be output in the site operations log as the stated acceptable range for home 30 is 15 to 34.999999. However, no data is incorrect as a result of this condition. No replacement AEM is available, as the changeout kit AEMs are somewhat different from the initial units. Site operations hopes to have time to diagnose the problem on the next PM visit and correct the problem. At present, data quality is not jeopardized. I will submit another DQR or addendum when successful replacement of the AEM is accomplished. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-12-21 | 07:35:00 | 1998-12-21 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp15ebbrE20.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-27 | 00:00:00 | 2015-11-30 | 23:59:59 | Note |
| Subject: | SGP /E39/E40 - Icing Event |
|---|---|
| Affected Datastreams: | sgpsebsE39.b1 |
| Description | An icing event (winter storm Cara) passed slowly through the area during this time frame. Instruments at the SGP may have been affected by ice accumulation. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-03-05 | 00:00:00 | 2012-04-25 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent heat fluxes incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The air and T/RH measurements were incorrect at times. Loose RH/temp connection was reseated. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-15 | 21:00:00 | 2003-10-29 | 23:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Fuse Blown in AEM |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | When the EBBR system restarted on 15 Oct. 2003, the AEM malfunctioned. Surface fluxes data during this period are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-02-06 | 06:00:00 | 2017-02-06 | 18:30:00 | Incorrect |
| 2017-01-14 | 07:30:00 | 2017-01-21 | 14:30:00 | Incorrect |
| 2017-02-14 | 05:30:00 | 2017-02-14 | 12:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Sensible and Latent Flux Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Surface energy balance was incorrect because the humidity measurement (and thus vapor pressure) was incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-12-09 | 07:00:00 | 1999-12-14 | 15:00:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E12 Net Radiation Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The net radiometer top dome was broken and water had entered. Net radiation values are therefore incorrect during the period. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-01-26 | 19:15:00 | 2004-04-13 | 20:45:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - AEM Sitting At Home 15 Position |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | After replacement of the AEM on 1/26/04, it exchanged briefly, then sat at the home 15 position until another replacement was available. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-03-29 | 18:15:00 | 2002-03-29 | 21:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Soil Heat Flows Incorrect After Calibration Changeout |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The soil heat flows were incorrect while the EBBR changeout was being done. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-11-02 | 23:45:00 | 2001-02-21 | 19:46:00 | Suspect |
| Subject: | SGP EBBR E20 - E20 EBBR Right Air T Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The right air temperature probe was incorrect frequently. Inspection of the right air temperature data will quickly show where it went offscale. Bowen ratio, sensible heat flux, and latent heat flux were incorrect as a result. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-04-30 | 20:00:00 | 2002-04-30 | 20:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The indicated measurements were incorrect during the 6 month checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2007-10-15 | 00:00:00 | 2007-10-24 | 19:00:00 | Note |
| Subject: | SGP/EBBR/E20 - Reprocessing Notice (RID 453) |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | See below for details of reprocessing that was completed on 20150310. Original DQR category: 4 (Red, Incorrect). ----------------------------------------------------------- The wind direction sensor reported wind directions that were 65 degrees too low because of a mis-alignment. This bias should have no effect on the res_ws or sigma_wd measurements. The wind direction data could be re-processed by adding 65 degrees. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-09-15 | 19:30:00 | 2004-09-15 | 20:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - All Soil Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | All soil measurements were incorrect during the replacement of soil heat flow #3 and soil temperature #3. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-01-08 | 03:30:00 | 1998-01-08 | 19:40:00 | Incorrect |
| Subject: | SGP/EBBR/E20- EBBR Frozen Wind Speed |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Wind speed cups were frozen during the indicated time periods. All 5, 15, and 30 minute data values indicated are incorrect for the periods listed. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-10-09 | 10:00:00 | 1996-10-09 | 20:00:00 | Missing |
| Subject: | SGP/EBBR/E12 - Annual Calibration Changeout |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | On 9 October 1996 the EBBR changeout for annual calibration occurred at E12, Pawhuska, OK. SEBS unit 10 was removed and unit 1 was installed. Between 1000 and 1500 GMT no data was collected. Data for half hours 1530-2000 GMT is incorrect; 3 month calibration checks were being performed. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-04-17 | 14:30:00 | 2002-04-17 | 14:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Reference Temperature Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The reference temperature was incorrect during the checks of the left air temperature sensor, leading to all gradient measurements, Bowen ratio, sensible heat flux, latent heat flux, soil temperature, and soil moisture measurements being incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-04-06 | 18:30:00 | 2012-06-12 | 20:30:00 | Suspect |
| Subject: | SGP/EBBR/E36 - Soil heat flow #3 too shallow |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Soil heat flow sensor #3 was too close to the soil surface. Sensible and latent heat fluxes may have been slightly too small as a result. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-12-24 | 05:32:00 | 2001-12-27 | 19:01:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #4 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil heat flow #4 was incorrect because it's wires were loose from the connection terminals. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-06-06 | 07:00:00 | 1995-06-07 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | For the period indicated, a malfunction in the E12 EBBR wind direction sensor caused the following data values to be incorrect: 5 minute: res_ws, wind_d, and sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, and sigma_wd. Wind direction normally indicated smaller or larger than it should have. The affected time period was determined from comparison with data from E7, Elk Falls EBBR, which is located north of E12. The wind direction sensor (S/N 3034) was replaced with S/N 3039 at 1822 GMT on June 7, 1995. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-14 | 12:00:00 | 2017-01-15 | 20:30:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Wind Direction and Wind Speed incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Wind speed and direction were frozen by an ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1993-10-30 | 13:00:00 | 1993-11-12 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Blown fuse in AEM at E20 |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | On October 30, 1993, before 1300 GMT, the fuse in the AEM (Automatic Exchange Mechanism) of Meeker, Ok (E20) EBBR blew out. The AEM remained nonfunctional until the fuse was replaced just before 1600 GMT on November 12, 1993. This situation resulted in the following invalid data: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, home 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, mv_home, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h, home_15, home_30 If the biases of the sensors were know, bowen, h, and e could be recalculated from the 15 minute and/or 5 minute data. Since we will not have any idea of what those biases are until an annual calibration of the sensors can take place (which may be months away), the recalculations cannot be performed at this time. Furthermore, it may be invalid to use sensor biases, if determined too far removed in time, due to the gradual calibration drift of some of the sensors. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1994-06-03 | 12:00:00 | 1994-06-08 | 15:15:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | For much of the period above, a malfunction in the E12 EBBR wind direction sensor (insect larvae shorting out the circuit board) caused incorrect values for 5 minute res_ws, wind_d, and sigma_wd, 15 minute mv_wind_d, and 30 minute res_ws, wind_d, and sigma_wd. Wind direction normally indicated north (near 0 or 360 degrees); there were some times during the period when wind directions looked good, but the lack of variation in direction and sigma implies that the data is suspect. Therefore, it would be wise to flag all of the values listed above during the entire time period as incorrect. The wind direction sensor (S/N 3081) was replaced with S/N 3042 at 1515 GMT on June 8, 1994. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-11 | 01:30:00 | 2000-12-15 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The anemometer was frozen stopped by freezing rain; the indicated data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-03-13 | 01:00:00 | 2016-04-14 | 19:30:00 | Suspect |
| Subject: | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Sensible and Latent Heat Fluxes incorrect at times because of a loose soil heat flow 3 probe lead. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-12-30 | 20:30:00 | 2003-01-08 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Heat Flow #3 and #5 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Heat Flow #3 was incorrect because part of the lead wire was cut; apparent vandalism. Soil Heat Flow #5 had been incorrect because of other causes, but was replaced at the same time as #3. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-12-12 | 20:32:00 | 2001-12-24 | 05:31:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 and #4 incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil heat flow #2 measurements had a negative offset. Negative values were too small and negative values occurred when positive values should have. This can occur when there is a poor wire connection or a J-panel over-voltage protection device has failed. Soil heat flow #4 was incorrect because it's wires were loose from the connection terminals. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g3 + g5)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-11-22 | 16:30:00 | 2002-11-22 | 20:00:00 | Incorrect |
| 2002-11-28 | 17:00:00 | 2002-11-28 | 23:00:00 | Incorrect |
| 2002-11-29 | 13:30:00 | 2002-11-29 | 21:30:00 | Incorrect |
| 2002-11-18 | 19:00:00 | 2002-11-18 | 22:00:00 | Incorrect |
| 2002-11-23 | 14:30:00 | 2002-11-23 | 22:30:00 | Incorrect |
| 2002-12-02 | 14:30:00 | 2002-12-02 | 22:30:00 | Incorrect |
| 2002-11-21 | 20:00:00 | 2002-11-21 | 20:30:00 | Incorrect |
| 2002-11-27 | 20:30:00 | 2002-11-27 | 23:00:00 | Incorrect |
| 2002-11-20 | 14:30:00 | 2002-11-20 | 22:00:00 | Incorrect |
| 2002-11-19 | 17:00:00 | 2002-11-19 | 22:00:00 | Incorrect |
| 2002-11-24 | 17:00:00 | 2002-11-24 | 22:00:00 | Incorrect |
| 2002-12-01 | 19:30:00 | 2002-12-01 | 20:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #1 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Temperature #1 was intermittently incorrect. The cause is unknown. The indicated measurements that are calculated using soil temperature are also incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-09-10 | 20:00:00 | 1998-06-18 | 14:20:00 | Note |
| Subject: | SGP/EBBR/E18 - Reprocessed and Corrected: E18 EBBR Net Radiometer Calibration |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | DATA REPROCESSED and CORRECTED: Incorrect calibration for the net radiometer was present upon startup of a newly installed EBBR, resulting in bad 5 and 30 minute q values during this time period. Simple multipliers were applied to correct data, and the sensible and latent heat fluxes were recalculated. The data were archived in January 2017. Please retrieve the reprocessed data for use in your analysis. ORIGINAL DQR CATEGORY: Yellow (Suspect) REPROCESSED and CORRECTED DATA ARCHIVED:2017-01 REPROCESS IDENTIFICATION NUMBER: RID 227 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- When the CR10 program was loaded in the storage module of the newly installed EBBR unit at E18 on 10 September 1997, an incorrect calibration for the net radiometer was present. The incorrect calibration had apparently been entered into the storage module by the vendor before the unit was shipped. The .DOC file showed the correct calibration; therefore, we did not suspect a problem until comparisons with radiometers at other sites nearby were performed. The program with the correct calibration was entered on 18 June 1998. The 15 minute mv_q values were not affected. The 5 and 30 minute q values during the period above need to be corrected; multiply positive q values by 0.684, multiply negative values by 0.811; Sensible (h) and Latent Heat (e) fluxes for the period need to be recalculated with the equations below. e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-09-19 | 21:15:00 | 2000-09-19 | 21:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - E18 EBBR Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The EBBR data was incorrect during maintenance. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-25 | 20:15:00 | 2001-01-03 | 19:15:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - EBBR E18 Wind Speed Iced |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The anemometer was frozen stopped by freezing rain. Indicated data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-02-01 | 10:00:00 | 2003-02-01 | 10:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - RHtop Zero |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The RHtop value in the 30 minute file is zero. 5 and 15 minute files show RHtop correctly. This behavior has been seen infrequently and can probably be attributed to a CR10 communication error. No other data, including the fluxes, are affected. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-05-21 | 04:30:00 | 2002-05-21 | 17:31:00 | Incorrect |
| 2002-05-20 | 06:00:00 | 2002-05-20 | 20:01:00 | Incorrect |
| 2002-05-22 | 11:30:00 | 2002-05-22 | 16:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Reprocess: Soil Heat Flow #1 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Soil Heat Flow 1 was incorrect during the indicated periods. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g2 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-13 | 22:00:00 | 2017-01-15 | 23:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Ice storm |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | Wind speed and direction were frozen stopped by an ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2008-08-15 | 02:30:00 | 2008-09-10 | 22:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The wind direction differed from the co-located SMOS by 50 deg during part of the stated period and the electronics had failed completely resulting in a constant 135 degrees for the following dates and times: 08/15 0230-0430, 0830-1530 and 09/03 0200-0300, 0500 - 09/10 2230. Sensible and latent heat fluxes were not affected by this problem. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-11-27 | 05:30:00 | 1997-12-18 | 18:05:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM Failure and Replacement |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The E12 AEM did not exchange for most of the period above, yielding small negative home signals. The AEM was replaced on 18 December by site operations personnel. All 30 minute e, h, and bowen data are incorrect for the times when the home signal is incorrect, and the temperature, relative humidity, and vapor pressures do not represent properly switched values. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-05-21 | 18:55:00 | 1998-05-21 | 19:18:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Six Month Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | During EBBR 6 month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period indicated. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-11-29 | 18:31:00 | 2000-11-29 | 19:01:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Data Incorrect After Program Restart |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | All data was incorrect after a datalogger program restart. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-11-14 | 16:05:00 | 2001-11-28 | 20:31:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Pressure Almost Constant |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | During the indicated period the pressure went to an almost constant 102 to 105 kPa. This occurred after the replacement of another sensor. The incorrect pressure values affect the sensible and latent heat flux calculations. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-11-12 | 22:30:00 | 2002-11-12 | 22:59:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Data Incorrect After Logger Restart |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Because soil temperature measurements were not available from the beginning of the half hour, the change in soil energy storage could not be calculated and thus is incorrect. There is no fix to this problem. Average Soil Heat Flow, Sensible Heat Flux (h), and Latent Heat Flux (e) can not be calculated using the available, remaining measurements. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-11-28 | 00:45:00 | 2001-11-28 | 20:31:00 | Suspect |
| 2002-02-06 | 21:30:00 | 2002-02-07 | 03:31:00 | Suspect |
| Subject: | SGP/EBBR/E20 - Battery Voltage Low |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | When the battery voltage is below 10.5 volts, most of the measurements are suspect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2009-01-27 | 02:45:00 | 2009-01-28 | 20:05:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind speed sensor was stopped by freezing rain. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-09 | 17:05:00 | 2002-09-18 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #2 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Temperature #2 was incorrect, apparently from am loose wire after replacement of the EBBR unit. The indicated measurements that are calculated using soil temperature are also incorrect. See the work-around below. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-11-15 | 01:00:00 | 1998-11-17 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Water In Net Radiometer, Flux Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Incorrect Net Radiation values resulted from water in the bottom dome. Thus incorrect sensible and latent heat fluxes resulted. Affected values are: 5 minute: q 15 minute: mv_q 30 minute: q, e, h |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-01-23 | 07:30:00 | 1996-01-24 | 16:15:00 | Incorrect |
| 1996-01-18 | 05:00:00 | 1996-01-18 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Cups Frozen |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Freezing rain, snow, and below freezing conditions during 18 and 23 January 1996 caused the wind speed sensor cups to freeze in a stopped state at E12, Pawhuska, OK. The cups were freed up later on 18 January when the wind speed rose to above 10 meters per second. When temperatures rose to above freezing on 24 January 1996, the ice thawed and the cups turned freely again. Measurements affected by the stalled wind speed sensor include: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-02-01 | 00:00:00 | 2000-02-08 | 15:31:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - E12 EBBR AEM Stuck - Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The AEM became stuck between levels, causing all gradient measurements to be incorrect, and thus the latent and sensible heat fluxes and Bowen ratio. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-11 | 21:30:00 | 2015-11-17 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat Flux Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and latent heat flux were incorrect while the AEM was not operating. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2011-05-25 | 12:00:00 | 2011-08-24 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Sensible and latent heat fluxes overestimated |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Net Radiation was too large resulting in overestimated sensible heat and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1993-12-20 | 07:30:00 | 1993-12-22 | 15:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Invalid data due to blown AEM fuse at E12 |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | On December 20, 1993, before 0730 GMT, the fuse in the AEM (Automatic Exchange Mechanism) of Pawhuska, OK (E12) EBBR blew out. The AEM remained nonfunctional until the fuse was replaced just before 1500 GMT on December 22, 1993. This situation resulted in the following invalid data: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, home 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, mv_home, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h, home_15, home_30 Bowen, h, and e can not be recalculated from the 15 minute and/or 5 minute data since we cannot determine the position of the sensors on the AEM from the home signal; home signal is near zero when there is no power to the AEM. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-02-01 | 00:00:00 | 2000-04-04 | 21:31:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - E18 EBBR Right RH Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Right RH being incorrect caused a number of calculated measurements to be incorrect also, including Bowen ratio, and latent and sensible heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-07-03 | 11:15:00 | 1998-07-15 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | On 3 July 1998 the cup anemometer lost a cup. Until the cup assembly was replaced by site ops personnel on 15 July 1998, wind speed and vector averaged wind speed data were incorrect. The values affected are listed below. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-09-10 | 20:00:00 | 1997-10-23 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Left RH Probe Temperature Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The left humidity probe temperature produced incorrect values from the time of installation of the E18 EBBR until 23 October at 1700 GMT because of a poor connection. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-10-12 | 16:30:00 | 2004-10-12 | 17:00:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2003-10-13 | 00:00:00 | 2005-07-22 | 23:59:00 | Note |
| Subject: | SGP/EBBR/E18 - metadata corrections |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E18 data collected by ARM back to the installation of the instrument in July 1997. Please see the current metadata for correct information. These changes do not affect data values or quality. The changes are summarized below: 1) Update of "sensor location" information 2) Addition of installation dates for the systems 3) Correction of soil type 4) Correction of soil moisture units (from "by volume" to "gravimetric") |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-12-30 | 20:30:00 | 2003-01-08 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Temperature #3 was incorrect. The cause is apparently vandalism; the probe leads were cut. The indicated measurements that are calculated using soil temperature are also incorrect. DQR D030117.19 already provides the work-around for calculating correct sensible (h) and latent heat (e) fluxes, as soil heat flow #3 and soil heat flow #5 were also incorrect during this period. That work-around is repeated below. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-06-17 | 09:00:00 | 2006-06-20 | 19:15:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Net Radiation, Fluxes Too Large |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Net Radiation was way too large because of water in the bottom dome. This resulted in the sensible and latent heat fluxes being too large also. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-14 | 23:00:00 | 2017-01-15 | 16:00:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Wind direction was frozen buy an ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-11-29 | 19:30:00 | 2000-11-29 | 19:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Some Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Quantities requiring a starting value were incorrect; sensible and latent heat fluxes were therefore incorrect also. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-27 | 16:30:00 | 2015-11-28 | 23:00:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Wind speed and Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Wind Speed and direction were affected by an icing event. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-12-27 | 09:00:00 | 2015-12-29 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and Latent Heat fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | Sensible and latent heat fluxes were incorrect when the AEM was not working. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-26 | 13:30:00 | 2000-12-29 | 19:01:00 | Incorrect |
| Subject: | SGP EBBR E18 - E18 EBBR Wind Direction Frozen |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The wind direction sensor was frozen stopped. The indicated measurements are incorrect as a result. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-07-20 | 17:00:00 | 1995-09-14 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM replacement |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Please see DQR P950816.2, where this problem was first documented. As noted in a previous DQR, the home signal values at E12, Pawhuska, OK began decreasing in July. At the beginning of the period listed, the home 30 value dropped below 15; this causes a data quality message to be output in the site operations log as the stated acceptable range for home 30 is 15 to 34.999999. No data is incorrect as a result of this condition. The home 15 value dropped below 35 beginning July 21, 1995, sometime after 2000 GMT; this causes a data quality message to be output in the site operations log as the stated acceptable range for home 15 is 35 to 70. Data is incorrect as a result of this condition, that being 30 minute e, h, and bowen. The home values frequently dropped below their proper levels until 10 August, 1995, at some time after 1100 GMT, when the set screws in the AEM would no longer hold and the aspirator units were stranded inbetween the home positions. Thereafter, the reported home signals were negative. All 30 minute e, h, and bowen data are incorrect for this condition. On August 16, 1995, at about 1600 GMT, site operators determined that they could not repair the AEM on-site and they determined that the replacement AEM that they took with them has an electronic short. Therefore, the AEM was left in manual mode (no exchange). All 30 minute e, h, and bowen data are incorrect until the end of the period listed above. On 13 September 1995 site operations personnel replaced the AEM (old S/N 92005, new S/N 94008). The new AEM would not exchange when the right sensor was in the home position: this was confirmed on 14 September when site operations personnel again visited the site. However, soon after the site operations personnel left Pawhuska on 14 September (at 1810 GMT), the AEM started to exchange properly (data correct for 1900 GMT and after). The AEM continues to operate properly. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-01-04 | 13:00:00 | 1998-01-15 | 17:15:00 | Suspect |
| Subject: | SGP/EBBR/E12 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The EBBR AEM stopped exchanging because of icing at during this time period. The calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for the time period indicated. The other measurements listed are also incorrect for those times: Note: Mentor supplied the end date/time for this DQR after submittal |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-12-08 | 20:30:00 | 2013-12-10 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Sensible and latent heat fluxes incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | The AEM was not working following a blown fuse resulting from icing during a winter storm. Sensible and latent heat fluxes were incorrect during this period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-11-26 | 21:00:00 | 2004-12-08 | 21:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Soil Heat Flow #4 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil Heat Flow #4 was missing or offscale and therefore incorrect during the stated period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1997-06-03 | 12:00:00 | 1997-06-08 | 15:15:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Sensor Malfunctions |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | For much of the period above, a malfunction in the E12 EBBR wind direction sensor (insect larvae shorting out the circuit board) caused incorrect values for 5 minute res_ws, wind_d, and sigma_wd, 15 minute mv_wind_d, and 30 minute res_ws, wind_d, and sigma_wd. Wind direction normally indicated north (near 0 or 360 degrees); there were some times during the period when wind directions looked good, but the lack of variation in direction and sigma implies that the data is suspect. Therefore, it would be wise to flag all of the values listed above during the entire time period as incorrect. The wind direction sensor (S/N 3081) was replaced with S/N 3042 at 1515 GMT on June 8, 1997. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-12-11 | 09:30:00 | 2000-12-15 | 02:45:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - EBBR E18 Wind Speed Iced |
|---|---|
| Affected Datastreams: | sgp5ebbrE18.b1 |
| Description | The anemometer was frozen stopped by freezing rain. Indicated data is incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-02-23 | 17:45:00 | 2002-02-23 | 18:01:00 | Incorrect |
| 2002-03-05 | 20:15:00 | 2002-03-06 | 02:01:00 | Incorrect |
| 2002-02-22 | 20:15:00 | 2002-02-22 | 21:01:00 | Incorrect |
| 2002-02-24 | 00:45:00 | 2002-02-25 | 02:01:00 | Incorrect |
| 2002-03-06 | 19:15:00 | 2002-03-07 | 19:01:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil temperature 3 was incorrect during the indicated periods. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g2 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-13 | 16:30:00 | 2017-01-15 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E40 - Wind Speed and Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE40.b1 |
| Description | Wind speed and direction were frozen by an ice storm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-10-30 | 22:00:00 | 2006-11-07 | 21:30:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | Sensible and latent heat fluxes were incorrect during this period because the AEM was not exchanging. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2009-01-26 | 19:10:00 | 2009-01-27 | 08:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The wind speed sensor was frozen stopped by freezing rain. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-08-21 | 12:00:00 | 2006-08-29 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Net Radiation, and Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Rain entered into the net radiometer through a broken top dome. Most of the net radiation values during the period are much too large, thus sensible and latent fluxes are also too large. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2009-04-12 | 03:05:00 | 2009-04-22 | 14:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Direction Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE20.b1 |
| Description | The wind direction measurement was stuck at 40 degrees. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-11 | 10:40:00 | 2005-01-12 | 07:55:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | An ice storm froze the wind speed sensor to a stopped condition. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-08-09 | 09:30:00 | 1995-08-09 | 20:30:00 | Note |
| Subject: | SGP/EBBR/E20 - Annual Calibration Changeout |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | On August 9, 1995 between 0930-2030 GMT, the changeout for annual calibration occurred at E20, Meeker, OK. Soil measurements data should be used with caution for the following week at least, as the sensors require time to "settle" into the soil. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-12-31 | 04:00:00 | 2015-12-31 | 17:00:00 | Missing |
| 2016-01-12 | 19:30:00 | 2016-01-23 | 20:00:00 | Missing |
| 2016-01-01 | 00:00:00 | 2016-01-01 | 15:00:00 | Missing |
| 2016-01-03 | 11:30:00 | 2016-01-03 | 15:00:00 | Missing |
| 2016-01-23 | 23:00:00 | 2016-01-23 | 23:30:00 | Missing |
| 2016-01-04 | 13:30:00 | 2016-01-04 | 15:00:00 | Missing |
| 2016-01-02 | 08:30:00 | 2016-01-02 | 15:00:00 | Missing |
| Subject: | SGP/EBBR/E32 - All Data Missing |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | All data was missing during these periods: 12/31/15 0400-1700 1/1/16 0000-1500 1/2/16 0830-1500 1/3/16 1130-1500 1/4/16 1330-1500 1/20/16 0230 - 1/22/16 2100 1/23/16 1930-2000, 2300-2330 |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-12-11 | 19:00:00 | 2002-12-11 | 19:29:00 | Incorrect |
| 2002-11-13 | 18:30:00 | 2002-11-13 | 18:59:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Data Zero following logger restarts |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Most of the measurements were zero, which normally happens after a datalogger restart. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-12-03 | 08:00:00 | 2013-12-13 | 19:00:00 | Incorrect |
| Subject: | SGP/EBBR/E32 - Sensible and latent heat fluxes incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE32.b1 |
| Description | The AEM was not working following a blown fuse resulting from icing during a winter storm. Sensible and latent heat fluxes were incorrect during this period. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-01-05 | 09:35:00 | 2005-01-08 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice Storm |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The wind direction sensor was frozen stopped by ice from a storm. The wind direction, sigma_wd, and residual wind speed measurements are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-11-27 | 21:25:00 | 2015-11-28 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E40 - Wind Speed Flatlined |
|---|---|
| Affected Datastreams: | sgp5ebbrE40.b1 |
| Description | Wind speed is flatlined due to an icing event. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-09-29 | 07:00:00 | 2012-10-03 | 13:30:00 | Incorrect |
| Subject: | SGP/EBBR/E36 - Bad battery voltage |
|---|---|
| Affected Datastreams: | sgp30ebbrE36.b1 |
| Description | Most measurements were incorrect due to a failed power supply. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-01-28 | 20:30:00 | 2010-02-01 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind speed sensor frozen stopped |
|---|---|
| Affected Datastreams: | sgp15ebbrE20.b1 |
| Description | The wind speed sensor was frozen stopped by freezing rain. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-01-13 | 03:30:00 | 1998-01-15 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Wind Speed Sensor Frozen |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The wind speed sensor was frozen during the period. Data values that were incorrect are: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-01-07 | 18:05:00 | 1999-01-09 | 03:30:00 | Incorrect |
| 1999-01-01 | 17:00:00 | 1999-01-03 | 11:30:00 | Incorrect |
| 1998-12-20 | 23:35:00 | 1998-12-22 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp5ebbrE12.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2017-01-14 | 23:00:00 | 2017-02-06 | 17:00:00 | Note |
| Subject: | SGP/EBBR/E32 - Relative Humidity Above Maximum - Sensible and Latent Heat Fluxes were not Affected |
|---|---|
| Affected Datastreams: | sgp5ebbrE32.b1 |
| Description | Relative humidity above maximum (a condition that accompanies aging of the RH sensors) - Sensible and latent heat fluxes were not affected |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-12-05 | 07:00:00 | 2016-12-07 | 20:00:00 | Incorrect |
| Subject: | SGP/EBBR/E39 - Sensible and Latent Heat Fluxes Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE39.b1 |
| Description | Sensible and latent heat fluxes were incorrect while the AEM was not functioning. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-09-08 | 21:30:00 | 2004-09-15 | 19:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Soil Heat Flow #3 and Soil Temperature #3 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil heat flow #3 and soil temperature #3 were damaged and therefore had to be replaced. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-09-29 | 17:30:00 | 2004-09-29 | 18:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - 6 Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-09-01 | 01:30:00 | 2006-09-12 | 16:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Soil Temperature #1 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | During much of this period soil temperature #1 was offscale or erratic. Sensible and latent heat fluxes were not ususally affected. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-11-01 | 00:00:00 | 2002-06-20 | 12:31:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Soil Temperature #3 was flaky primarily during nighttime hours and sometimes during early daylight hours. Average soil heat flow, sensible heat flux, and latent heat flux are also affected; these can be recalculated using the remaining good sets of soil sensors as follows: The heat fluxes can be recalculated by using soil sets 1, 2, 4, and 5 as follows: ave_shf = (g1 + g2 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-09 | 17:30:00 | 2002-12-11 | 19:30:00 | Note |
| Subject: | SGP/EBBR/E20 - Reprocessed and Corrected: Net Rad Coefficients Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | DATA REPROCESSED and CORRECTED: Incorrect calibration resulted in bad q (net radiation) values. Simple multipliers corrected the data and then sensible and latent heat fluxes were recalculated. The data were archived in March 2017. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::ebbr/fsite::sgp/ffac::sgp.E20 ORIGINAL DQR CATEGORY: Red( Incorrect) REPROCESSED and CORRECTED DATA ARCHIVED:2017-02 REPROCESS IDENTIFICATION NUMBER: RID 231 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- The Net Radiometer coefficients were incorrect in the CR10 program when the replacement EBBR unit was installed on 08/09/02. The data can be easily corrected; see the Suggestion area below. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-10-12 | 15:45:00 | 2004-10-27 | 06:45:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not affected |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The home_15 measurement was incorrect during much of the stated period. The AEM was exchanging however, and thus the flux measurements were not affected. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-03-02 | 19:00:00 | 2005-03-30 | 19:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Average Soil Heat Flux Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | A typo in the version 9 EBBR program caused average soil heat flow to be zero, resulting in both sensible and latent heat fluxes being approximately 20 watts per meter squared too large during the middle of the day. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-01-12 | 03:15:00 | 2002-01-13 | 21:31:00 | Incorrect |
| 2002-02-09 | 01:15:00 | 2002-02-12 | 07:31:00 | Incorrect |
| 2002-01-17 | 09:15:00 | 2002-01-21 | 09:01:00 | Incorrect |
| 2001-12-04 | 00:00:00 | 2001-12-12 | 19:14:00 | Incorrect |
| 2002-02-20 | 16:45:00 | 2002-02-20 | 18:31:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 Has a Negative Offset |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Soil heat flow #2 measurements had a negative offset. Negative values were too small and negative values occurred when positive values should have. This can occur when there is a poor wire connection or a J-panel over-voltage protection device has failed. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-08-07 | 16:30:00 | 2002-08-07 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - AEM Hung between Home Positions |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | When the AEM (Automatic Exchange Mechanism) is hung inbetween home positions, the gradients of temperature and relative humidity, and thus sensible and latent heat fluxes, are incorrect. There is no work-around to this problem. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-12-21 | 10:05:00 | 1998-12-22 | 20:00:00 | Suspect |
| Subject: | SGP/EBBR - EBBR E18 Wind Speed Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2000-10-04 | 19:30:00 | 2000-10-04 | 19:31:00 | Incorrect |
| Subject: | SGP EBBR E20 - E20 EBBR Net Radiation Data Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The net radiation data was incorrect while the top dome was being replaced. Sensible and latent heat fluxes are therefore also incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1998-05-21 | 14:02:00 | 1998-05-21 | 14:30:00 | Incorrect |
| Subject: | SGP/EBBR/E18 - Six Month Checks |
|---|---|
| Affected Datastreams: | sgp30ebbrE18.b1 |
| Description | During EBBR 6 month checks (formally called 3 month checks) the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during these periods do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate correct gradients. Checks performed just before or after the AEM is disabled also lead to some incorrect data. Incorrect 5, 15 minute and half hour data occurs for the period above. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1995-11-18 | 03:15:00 | 1995-11-21 | 21:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - AEM Failure/Right Radiation Shield OFF |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | On 18 November 1995 the AEM at E12, Pawhuska, OK stopped exchanging, with the right radiation shield at the bottom position. The 30 minute home signal reflects this condition. During the 21 November PM visit, the site operators also found that the right radiation shield was no longer attached to the AEM, but was dangling by its conduit. It is not clear whether both conditions occurred simultaneously. Comparison of E12 data with that at the Central Facility indicates that E12 data was correct on 17 November. The AEM had stopped exchanging because a transistor became unsoldered from the AEM circuit board. Site operators repaired this and reattached the right radiation shield to bring the system to operational status at 2130 GMT. All 30 minute latent heat (e), sensible heat (h), and Bowen ratio (bowen) data during the period above are incorrect. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-02-21 | 23:00:00 | 2010-02-22 | 17:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Wind Speed Sensor Frozen Stopped by Icing |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | Icing stopped the wind speed sensor cups and resulted in the measurement of wind speed being equivalent to the sensor offset. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-12-26 | 16:30:00 | 2013-01-28 | 18:30:00 | Incorrect |
| Subject: | SGP/EBBR/E12 - Net rad too high |
|---|---|
| Affected Datastreams: | sgp30ebbrE12.b1 |
| Description | The net radiometer measurements were too large and therefore resulted in incorrect sensible and latent heat flux measurements. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-10-20 | 13:00:00 | 2002-10-20 | 15:00:00 | Incorrect |
| Subject: | SGP/EBBR/E20 - Resistance-based Measurements Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | When the Reference Temperature in the EBBR enclosure is not reported correctly, it affects all resistance-based measurements that are adjusted with the temperature of the reference junction. No work-around is possible for this situation. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2001-04-01 | 00:00:00 | 2005-03-30 | 19:00:00 | Note |
| Subject: | SGP/EBBR/E20 - Improved EBBR CR10 Program |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | Effective 20050330.1900, the EBBR.E20 CR10 program was revised to improve the quality of the primary measurements as follows: 1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow. This is applied to the individual soil sets. Measurements outside the limits are rejected and the measurements within the limits are used to calculate the average soil heat flow. 2) Max and min limits are used to determine incorrect values of net radiation, sensible heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal. If AEM signal is outside the limits, h and e are set to 999s. If net radiation is outside the limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s. Virtually no incorrect soil measurement will affect the primary measurements of h and e. By setting h and e to 999s, it can be easily seen that the primary variables are incorrect; no other interpretation is possible. Prior to 20050330, the improved CR10 program was NOT in effect. DQRs have been submitted for known instances of incorrect soil measurements which affected the quality of the primary measurements of h and e. Note: the DQR begin date is the begin date of the sgp30ebbrE20.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE20.a1). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1999-09-30 | 07:00:00 | 2000-02-09 | 17:15:00 | Incorrect |
| Subject: | SGP/EBBR - EBBR E20 Right Air Temperature Incorrect |
|---|---|
| Affected Datastreams: | sgp30ebbrE20.b1 |
| Description | The right air temperature (thermocouple) output was frequently offscale. Examination of the 15 minute data will clearly show which times are affected during the period. The affected data are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e |
| Measurements |
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