DQR ID | Subject | Data Streams Affected |
---|---|---|
D000221.5 | SGP/EBBR - EBBR E15 Anemometer Cup Off, Wind Speed Incorrect | sgp30ebbrE15.b1 |
D000221.8 | SGP/EBBR - EBBR E12 Anemometer Cups Frozen, Wind Speed Incorrect | sgp30ebbrE12.b1 |
D000225.10 | SGP/EBBR - EBBR E12 Net Radiation Incorrect | sgp30ebbrE12.b1 |
D000225.2 | SGP/EBBR- EBBR E15 Air Temperatures Incorrect | sgp30ebbrE15.b1 |
D000225.7 | SGP/EBBR - EBBR E13 Left Aspirator Not Working | sgp30ebbrE13.b1 |
D000301.1 | SGP/EBBR - EBBR E12 Net Radiation Incorrect | sgp30ebbrE12.b1 |
D000301.3 | SGP/EBBR - EBBR E13 Net Radiation Incorrect | sgp30ebbrE13.b1 |
D000531.4 | SGP/EBBR/E13 - failure of sensors | sgp30ebbrE13.b1 |
D000531.5 | SGP/EBBR/E13 - Failed Right Humidity Probe | sgp30ebbrE13.b1 |
D000628.1 | SGP/EBBR/E13- Left humidity probe replaced | sgp30ebbrE13.b1 |
D010213.1 | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced | sgp30ebbrE12.b1 |
D010213.2 | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced | sgp30ebbrE12.b1 |
D010213.3 | SGP/EBBR/E15 - EBBR E15 Wind Speed Iced | sgp30ebbrE15.b1 |
D010402.13 | SGP/EBBR/E12 - E12 EBBR Wind Direction Incorrect | sgp30ebbrE12.b1 |
D010402.14 | SGP/EBBR/E12 - E12 EBBR Wind Speed Incorrect | sgp30ebbrE12.b1 |
D010402.16 | SGP/EBBR/E12 - E12 EBBR AEM Stuck - Data Incorrect | sgp30ebbrE12.b1 |
D010403.10 | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect | sgp30ebbrE13.b1 |
D010403.16 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.17 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.18 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.19 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.2 | SGP/EBBR/E13 - E13 EBBR Heat Capacities Incorrect | sgp30ebbrE13.b1 |
D010403.20 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.22 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.24 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.3 | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect | sgp30ebbrE13.b1 |
D010403.35 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.36 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.37 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.38 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.39 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.4 | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect | sgp30ebbrE13.b1 |
D010403.40 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.41 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.42 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.43 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.44 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.45 | SGP/EBBR/E13 - E13 EBBR All Data Incorrect | sgp30ebbrE13.b1 |
D010403.6 | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect | sgp30ebbrE13.b1 |
D010403.8 | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect | sgp30ebbrE13.b1 |
D010403.9 | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect | sgp30ebbrE13.b1 |
D010412.1 | SGP/EBBR/E13 - E13 EBBR Soil Temperature #4 Suspect | sgp30ebbrE13.b1 |
D010413.1 | SGP/EBBR/E13 - E13 EBBR Wind Direction Iced | sgp30ebbrE13.b1 |
D010413.2 | SGP/EBBR/E13 - E13 EBBR Soil Heat Flow #4 Incorrect | sgp30ebbrE13.b1 |
D010413.3 | SGP/EBBR/E15 - E15 EBBR Reference Temperature Incorrect | sgp30ebbrE15.b1 |
D010413.4 | SGP/EBBR/E15 - E15 EBBR Data Incorrect | sgp30ebbrE15.b1 |
D010413.5 | SGP/EBBR/E15 - E15 EBBR Data Missing | sgp30ebbrE15.b1 |
D010413.6 | SGP/EBBR/E15 - E15 EBBR Data Incorrect | sgp30ebbrE15.b1 |
D010413.7 | SGP/EBBR/E15 - E15 EBBR Data Missing | sgp30ebbrE15.b1 |
D010413.8 | SGP/EBBR/E15 - E15 EBBR Some Soil Temperatures and Heat Flows Incorrect | sgp30ebbrE15.b1 |
D010413.9 | SGP/EBBR/E15 - E15 EBBR Some Soils and Flux Data Incorrect | sgp30ebbrE15.b1 |
D010416.1 | SGP/EBBR/E15 - E15 EBBR AEM Stuck in Middle | sgp30ebbrE15.b1 |
D010416.2 | SGP/EBBR/E15 - E15 EBBR AEM Replacement | sgp30ebbrE15.b1 |
D010416.3 | SGP/EBBR/E15 - E15 EBBR Battery Voltage Low | sgp30ebbrE15.b1 |
D010416.4 | SGP/EBBR/E15 - E15 EBBR Incorrect Net Radiation | sgp30ebbrE15.b1 |
D010605.5 | SGP EBBR E13 - E13 EBBR Soil T #4 Incorrect | sgp30ebbrE13.b1 |
D011127.26 | SGP EBBR E12 - E12 EBBR Data Incorrect During 6 Month Checks | sgp30ebbrE12.b1 |
D011127.27 | SGP EBBR E13 - E13 EBBR Data Incorrect During 6 Month Checks | sgp30ebbrE13.b1 |
D011127.28 | SGP EBBR E15 - E15 EBBR Data Incorrect During 6 Month Checks | sgp30ebbrE15.b1 |
D011207.11 | SGP EBBR E12 - E12 EBBR Data Incorrect From AEM In One Position | sgp30ebbrE12.b1 |
D011207.12 | SGP EBBR E15 - E15 EBBR Battery Voltage Low, Data Incorrect | sgp30ebbrE15.b1 |
D011218.1 | SGP EBBR E15 - E15 EBBR Data Zeros Incorrect | sgp30ebbrE15.b1 |
D020129.1 | SGP EBBR E15 - E15 EBBR Recalibration Changeout | sgp30ebbrE15.b1 |
D020129.10 | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil heat Flows #1 and #2 Incorrect | sgp30ebbrE13.b1 |
D020129.11 | SGP EBBR E13 - E13 EBBR Data Incorrect | sgp30ebbrE13.b1 |
D020129.12 | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect | sgp30ebbrE13.b1 |
D020129.13 | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect | sgp30ebbrE13.b1 |
D020129.2 | SGP EBBR E13 - E13 EBBR AEM in Mid Position | sgp30ebbrE13.b1 |
D020129.3 | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset | sgp30ebbrE13.b1 |
D020129.4 | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset or AEM in Mid Position | sgp30ebbrE13.b1 |
D020129.5 | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect | sgp30ebbrE13.b1 |
D020129.7 | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect | sgp30ebbrE13.b1 |
D020129.8 | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect | sgp30ebbrE13.b1 |
D020129.9 | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect | sgp30ebbrE13.b1 |
D020131.13 | SGP/EBBR/E13 - Left T/RH Probe Temperature Incorrect | sgp30ebbrE13.b1 |
D020214.1 | SGP/EBBR/E13 - Left Humidity Probe Temperature Incorrect | sgp30ebbrE13.b1 |
D020214.2 | SGP/EBBR/E13 - Data incorrect during maintenance | sgp30ebbrE13.b1 |
D020214.5 | SGP/EBBR/E13 - Data Incorrect During 6 Month Checks | sgp30ebbrE13.b1 |
D020214.7 | SGP/EBBR/E15 - Data Incorrect During 6 Month Checks | sgp30ebbrE15.b1 |
D020628.1 | SGP/EBBR/E12 - 3-month Check | sgp30ebbrE12.b1 |
D020628.15 | SGP/EBBR/E12 - T/RH Check | sgp30ebbrE12.b1 |
D020628.16 | SGP/EBBR/E13 - T/RH Check | sgp30ebbrE13.b1 |
D020628.17 | SGP/EBBR/E15 - T/RH Check | sgp30ebbrE15.b1 |
D020628.2 | SGP/EBBR/E13 - 3-month Check | sgp30ebbrE13.b1 |
D020628.3 | SGP/EBBR/E15 - 3-month Check | sgp30ebbrE15.b1 |
D020716.11 | SGP/EBBR/E12 - 6 Month Checks | sgp30ebbrE12.b1 |
D020716.12 | SGP/EBBR/E13 - 6 Month Checks | sgp30ebbrE13.b1 |
D020716.13 | SGP/EBBR/E15 - 6 Month Checks | sgp30ebbrE15.b1 |
D020717.10 | SGP/EBBR/E12 - AEM Hung | sgp30ebbrE12.b1 |
D020717.11 | SGP/EBBR/E12 - Measurements Incorrect | sgp30ebbrE12.b1 |
D020717.12 | SGP/EBBR/E12 - Resistance Measurements Incorrect | sgp30ebbrE12.b1 |
D020717.13 | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 Incorrect | sgp30ebbrE13.b1 |
D020717.14 | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #2 Incorrect | sgp30ebbrE13.b1 |
D020717.15 | SGP/EBBR/E13 - Wrong CR10 Program Installed | sgp30ebbrE13.b1 |
D020717.16 | SGP/EBBR/E13 - Wind Direction Incorrect | sgp30ebbrE13.b1 |
D020717.17 | SGP/EBBR/E13 - AEM Hung up | sgp30ebbrE13.b1 |
D020717.6 | SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE12.b1 |
D020717.7 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp30ebbrE12.b1 |
D020717.8 | SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect | sgp30ebbrE12.b1 |
D020717.9 | SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect | sgp30ebbrE12.b1 |
D020723.1 | SGP/EBBR/E13 - Thermocouple out of range, data incorrect | sgp30ebbrE13.b1 |
D020726.2 | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 and #2 Incorrect | sgp30ebbrE13.b1 |
D021113.1 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE15.b1, sgp30ebbrE12.b1, sgp30ebbrE13.b1 |
D021113.2 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30baebbrE13.c1, sgp30baebbrE15.c1 |
D021113.3 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30baebbrE12.c1 |
D021113.4 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE12.b1 |
D030110.33 | SGP/EBBR/E12 - Data Incorrect during 6 month checks | sgp30ebbrE12.b1 |
D030110.34 | SGP/EBBR/E13 - Data Incorrect during 6 month checks | sgp30ebbrE13.b1 |
D030110.35 | SGP/EBBR/E15 - Data Incorrect during 6 month checks | sgp30ebbrE15.b1 |
D030114.11 | SGP/EBBR/E12 - Resistance-based Measurements Incorrect | sgp30ebbrE12.b1 |
D030114.12 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp30ebbrE12.b1 |
D030114.13 | SGP/EBBR/E12 - Data zero following Logger Restart | sgp30ebbrE12.b1 |
D030114.14 | SGP/EBBR/E12 - Battery Voltage Low | sgp30ebbrE12.b1 |
D030114.19 | SGP/EBBR/E12 - AEM Stuck in One Position | sgp30ebbrE12.b1 |
D030115.2 | SGP/EBBR/E12 - Reprocess: Net Rad Calibration Coefficients | sgp30ebbrE12.b1 |
D030115.3 | SGP/EBBR/E12 - Data Mostly Zero Following Logger Restart | sgp30ebbrE12.b1 |
D030115.4 | SGP/EBBR/E13 - Wind Speed Stalling at Low Speeds | sgp30ebbrE13.b1 |
D030115.5 | SGP/EBBR/E13 - Reprocess: Soil Moisture #1 Offset1 | sgp30ebbrE13.b1 |
D030115.6 | SGP/EBBR/E13 - AEM Jung between Home Positions | sgp30ebbrE13.b1 |
D030115.7 | SGP/EBBR/E15 - Reprocess: Soil Moisture #1 Offset | sgp30ebbrE15.b1 |
D030115.8 | SGP/EBBR/E15 - Data Mostly Zero Following Logger Restart | sgp30ebbrE15.b1 |
D030115.9 | SGP/EBBR/E15 - Pressure Low | sgp30ebbrE15.b1 |
D030711.21 | SGP/EBBR/E12 - AEM Hung Inbetween Home Positions | sgp30ebbrE12.b1 |
D030712.16 | SGP/EBBR/E12 - 6 Month Checks | sgp30ebbrE12.b1 |
D030712.17 | SGP/EBBR/E13 - 6 Month Checks | sgp30ebbrE13.b1 |
D030712.18 | SGP/EBBR/E15 - 6 Month Checks | sgp30ebbrE15.b1 |
D030724.2 | SGP/EBBR/E15 - Wind Direction 10 Degrees Low | sgp30ebbrE15.b1 |
D030728.2 | SGP/EBBR/E15 - Top Humidity reported as zero in 30 minute data. | sgp30ebbrE15.b1 |
D030919.8 | SGP/EBBR/E13 - Water In Net Radiometer; Surface Fluxes are Incorrect | sgp30ebbrE13.b1 |
D031031.2 | SGP/EBBR/E15 - Reference Temperature Failed | sgp30ebbrE15.b1 |
D031031.4 | SGP/EBBR/E12 - Water in Net Radiometer, Surface Fluxes Incorrect | sgp30ebbrE12.b1 |
D031031.5 | SGP/EBBR/E13 - Water in Net Radiometer, Surface Fluxes Incorrect | sgp30ebbrE13.b1 |
D031031.6 | SGP/EBBR/E15 - Water In Net Radiometer, Surface Fluxes Incorrect | sgp30ebbrE15.b1 |
D031031.9 | SGP/EBBR/E15 - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect | sgp30ebbrE15.b1 |
D031106.1 | SGP/EBBR/E15 - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect | sgp30ebbrE15.b1 |
D031110.7 | SGP/EBBR/E15 - AEM Hung Between Home Positions, Surface Fluxes Incorrect | sgp30ebbrE15.b1 |
D031124.12 | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage | sgp30ebbrE12.b1 |
D031204.10 | SGP/EBBR/E13 - 6 Month Checks | sgp30ebbrE13.b1 |
D031204.11 | SGP/EBBR/E15 - 6 Month Checks | sgp30ebbrE15.b1 |
D031204.9 | SGP/EBBR/E12 - 6 Month Checks | sgp30ebbrE12.b1 |
D031217.4 | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage | sgp30ebbrE12.b1 |
D031222.15 | SGP/EBBR/E12 - Wind Speed Sensor Frozen By Ice Storm | sgp30ebbrE12.b1 |
D031222.16 | SGP/EBBR/E13 - Wind Speed Sensor Frozen By Ice Storm | sgp30ebbrE13.b1 |
D031222.17 | SGP/EBBR/E13 - Net Radiometer Iced Over During Storm | sgp30ebbrE13.b1 |
D031222.18 | SGP/EBBR/E15 - Net Radiometer Iced Over During Storm | sgp30ebbrE15.b1 |
D031222.19 | SGP/EBBR/E15 - Wind Speed Sensor Frozen By Ice Storm | sgp30ebbrE15.b1 |
D040112.1 | SGP/EBBR/E15 - Wind Direction About 130 Degrees Low | sgp30ebbrE15.b1 |
D040227.1 | SGP/EBBR/E15 - Net Radiometer not level | sgp30ebbrE15.b1 |
D040304.10 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE12.b1 |
D040304.11 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE12.b1 |
D040304.12 | SGP/EBBR/E13 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE13.b1 |
D040304.13 | SGP/EBBR/E13 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE13.b1 |
D040304.14 | SGP/EBBR/E15 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE15.b1 |
D040507.1 | SGP/EBBR/E15 - Wind Speed Incorrect | sgp30baebbrE15.c1, sgp30ebbrE15.b1 |
D040608.6 | SGP/EBBR/E13 - Automatic Exchange Mechanism Failure | sgp30ebbrE13.b1 |
D040615.3 | SGP/EBBR/E12 - Incorrect Times | sgp30ebbrE12.b1, sgp30baebbrE12.c1 |
D040615.6 | SGP/SWATS/E12 - Time drift | sgpswatsE12.b1 |
D040915.2 | SGP/EBBR/E13 - Net Radiation Incorrect, Fluxes Incorrect | sgp30ebbrE13.b1 |
D040915.6 | SGP/EBBR/E13 - AEM Failure, Fluxes Incorrect | sgp30ebbrE13.b1 |
D041004.4 | SGP/EBBR/E15 - Soil Moisture Coefficients Incorrect | sgp30ebbrE15.b1 |
D041222.11 | SGP/EBBR/E12 - 6 Month Checks | sgp30ebbrE12.b1 |
D041222.12 | SGP/EBBR/E13 - 6 Month Checks | sgp30ebbrE13.b1 |
D041222.13 | SGP/EBBR/E15 - 6 Month Checks | sgp30ebbrE15.b1 |
D041222.2 | SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not affected | sgp30ebbrE12.b1 |
D050114.7 | SGP/EBBR/E13/E15/E20/E22/E26/E4/E7/E8/E9 - BA EBBR VAP Bulk Aerodynamics | sgp30baebbrE13.c1, sgp30baebbrE15.c1 |
D050117.8 | SGP/EBBR/E12 - BA EBBR VAP Bulk Aerodynamics | sgp30baebbrE12.c1 |
D050206.10 | SGP/EBBR/E13 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE13.b1 |
D050206.11 | SGP/EBBR/E15 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE15.b1 |
D050206.9 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE12.b1 |
D050207.5 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice Storm | sgp30ebbrE12.b1 |
D050207.6 | SGP/EBBR/E13 - Wind Direction Frozen Stopped By Ice Storm | sgp30ebbrE13.b1 |
D050207.7 | SGP/EBBR/E15 - Wind Direction Frozen Stopped By Ice Storm | sgp30ebbrE15.b1 |
D050215.16 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE12.b1 |
D050215.17 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE12.b1 |
D050215.18 | SGP/EBBR/E15 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE15.b1 |
D050215.19 | SGP/EBBR/E15 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE15.b1 |
D050304.1 | SGP/EBBR/E12 - Wind Speed and Direction Frozen by Ice Storm | sgp30ebbrE12.b1 |
D050324.1 | SGP/EBBR/E15 - Soil Heat Flows Undermeasured, and Latent and Sensible Heat Fluxes Overstimated | sgp30ebbrE15.b1 |
D050503.6 | SGP/SWATS/E12 - Reprocessing Notice (RID 156) | sgpswatsE12.b1 |
D050503.8 | SGP/SWATS/E13 - Reprocessing Notice (RID 156) | sgpswatsE13.b1 |
D050510.3 | SGP/EBBR/E13 - Net Radiometer Tilted Half Degree West | sgp30ebbrE13.b1 |
D050622.1 | SGP/EBBR/E13 - Sensible and Latent Heat Fluxes Incorrect (AEM failure) | sgp30ebbrE13.b1 |
D050624.2 | SGP/EBBR/E15 - Net Radiation Too Large - Water in Bottom | sgp30ebbrE15.b1 |
D050624.7 | SGP/EBBR/E13 - Improved EBBR CR10 Program | sgp30ebbrE13.b1 |
D050719.10 | SGP/EBBR/E15 - Improved EBBR CR10 Program | sgp30ebbrE15.b1 |
D050719.9 | SGP/EBBR/E12 - Improved EBBR CR10 Program | sgp30ebbrE12.b1 |
D051104.2 | SGP/EBBR/E13 - Fluxes Incorrect | sgp30ebbrE13.b1 |
D051104.3 | SGP/EBBR/E13 - Loose connections | sgp30ebbrE13.b1 |
D051106.23 | SGP/EBBR/E12 - Average Soil Heat Flux Incorrect | sgp30ebbrE12.b1 |
D051106.24 | SGP/EBBR/E13 - Average Soil Heat Flux Incorrect | sgp30ebbrE13.b1 |
D051106.25 | SGP/EBBR/E15 - Average Soil Heat Flux Incorrect | sgp30ebbrE15.b1 |
D051106.9 | SGP/EBBR/E15 - Soil Set #5 Temperature, Moisture, and Heat Flow Incorrect | sgp30ebbrE15.b1 |
D051111.10 | SGP/EBBR/E12 - metadata corrections | sgp30ebbrE12.b1 |
D051111.11 | SGP/EBBR/E13 - metadata corrections | sgp30ebbrE13.b1 |
D051111.12 | SGP/EBBR/E15 - metadata corrections | sgp30ebbrE15.b1 |
D051215.3 | SGP/EBBR/E15 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect. | sgp30ebbrE15.b1 |
D060111.10 | SGP/EBBR/E15 - Incorrect Sensible and Latent Heat Fluxes | sgp30ebbrE15.b1 |
D060111.11 | SGP/EBBR/E15 - Reprocess: Sensible and Latent Heat Fluxes, Soil Set #2 Sometimes Incorrect | sgp30ebbrE15.b1 |
D060111.5 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect at Times | sgp30ebbrE12.b1 |
D060111.8 | SGP/EBBR/E12 - Multiplexer failure | sgp30ebbrE12.b1 |
D060111.9 | SGP/EBBR/E13 - Wind Speed Sensor Frozen | sgp30ebbrE13.b1 |
D060501.11 | SGP/EBBR/E12 - Fluxes and Gradient Measurements Incorrect | sgp30ebbrE12.b1 |
D060501.12 | SGP/EBBR/E13 - Missing Data | sgp30ebbrE13.b1 |
D060501.13 | SGP/EBBR/E13 - Flux and Gradient Measurements Incorrect | sgp30ebbrE13.b1 |
D060501.14 | SGP/EBBR/E13 - Net Radiation and Fluxes Suspect | sgp30ebbrE13.b1 |
D060501.15 | SGP/EBBR/E15 - Wind Speed Sensor Frozen Stopped | sgp30ebbrE15.b1 |
D060622.1 | SGP/EBBR/E13 - Left Air Temperature Incorrect - Fluxes Affected | sgp30ebbrE13.b1 |
D060622.2 | SGP/EBBR/E13 - Fluxes Incorrect, AEM Problems | sgp30ebbrE13.b1 |
D060802.1 | SGP/SWATS/E12 - Incorrect soil moisture | sgpswatsE12.b1 |
D060818.10 | SGP/EBBR/E13 - Sensible and Latent Heat Fluxes Incorrect When Pressure Offscale | sgp30ebbrE13.b1 |
D060921.3 | SGP/EBBR/E12 - Net Radiation, and Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE12.b1 |
D060921.4 | SGP/EBBR/E12 - Soil Temperature #1 Incorrect | sgp30ebbrE12.b1 |
D060921.5 | SGP/EBBR/E13 - Soil Heat Flow #3 Large Negative | sgp30ebbrE13.b1 |
D060921.6 | SGP/EBBR/E13 - Pressure and Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE13.b1 |
D060921.7 | SGP/EBBR/E13 - Most Measurements Incorrect When Battery Voltage Too low | sgp30ebbrE13.b1 |
D061114.6 | SGP/EBBR/E13 - Battery failure | sgp30ebbrE13.b1 |
D070917.1 | SGP/EBBR/E13 - Radiometer dome broken | sgp30ebbrE13.b1 |
D071026.2 | SGP/SWATS/E12 - Reprocess: Incorrect calibrations | sgpswatsE12.b1 |
D080318.1 | SGP/EBBR/E13 - Wind direction failure | sgp30ebbrE13.b1 |
D080616.4 | SGP/EBBR/E15 - Water in dome | sgp30ebbrE15.b1 |
D080616.5 | SGP/EBBR/E15 - Soil Heat Flow #4 Incorrect | sgp30ebbrE15.b1 |
D081210.12 | SGP/SWATS/E15 - Sensor failure, 5cm E | sgpswatsE15.b1 |
D081210.13 | SGP/SWATS/E15 - Incorrect soil moisture | sgpswatsE15.b1 |
D090313.12 | SGP/EBBR/E12 - Wind Speed Incorrect | sgp30ebbrE12.b1 |
D090313.13 | SGP/EBBR/E13 - Wind Speed Incorrect | sgp30ebbrE13.b1 |
D090313.14 | SGP/EBBR/E15 - Wind Speed Incorrect | sgp30ebbrE15.b1 |
D090313.2 | SGP/EBBR/E15 - Soil Moisture and Soil Temp #1 Incorrect | sgp30ebbrE15.b1 |
D100223.1 | SGP/EBBR/E12 - Wind Speed Sensor Frozen Stopped by Icing | sgp30ebbrE12.b1 |
D100510.1 | SGP/EBBR/E15 - Sensible and Latent Heat Fluxes Low (Net Radiation too low) | sgp30ebbrE15.b1 |
D100720.2 | SGP/EBBR/E12 - Intermittent data loss | sgp30ebbrE12.b1 |
D100720.3 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Other Measurements Incorrect | sgp30ebbrE12.b1 |
D100727.5 | SGP/EBBR/E13 - Incorrect Sensible and Latent Heat Fluxes | sgp30ebbrE13.b1 |
D101004.1 | SGP/EBBR/E12 - Net radiation too high | sgp30ebbrE12.b1 |
D101004.2 | SGP/EBBR/E13 - Net Radiation Too Large | sgp30ebbrE13.b1 |
D101007.1 | SGP/EBBR/E15 - Sensible and Latent Heat Flux Suspect - Soil Heat Flow 5 Problem | sgp30ebbrE15.b1 |
D110629.1 | SGP/SWATS/E13 - Lightning damage | sgpswatsE13.b1 |
D110707.1 | SGP/SWATS/E15 - Missing data | sgpswatsE15.b1 |
D110721.1 | SGP/EBBR/E13 - Soil temperature #3 offscale | sgp30ebbrE13.b1 |
D110830.1 | SGP/EBBR/E12 - Loose connection (SHF #4) | sgp30ebbrE12.b1 |
D120128.2 | SGP/EBBR/E15 - Soil heat flow #1 failure | sgp30ebbrE15.b1 |
D120305.1 | SGP/EBBR/E15 - Soil heat flow #5 failure | sgp30ebbrE15.b1 |
D120307.1 | SGP/EBBR/E12 - Soil heat flux #4 intermittently incorrect | sgp30ebbrE12.b1 |
D120507.4 | SGP/EBBR/E15 - Sensible and Latent heat fluxes incorrect | sgp30ebbrE15.b1 |
D120507.5 | SGP/EBBR/E12 - Sensible and Latent heat fluxes incorrect | sgp30ebbrE12.b1 |
D121107.1 | SGP/EBBR/E15 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE15.b1 |
D130110.4 | SGP/EBBR/E15 - Sensible and latent heat fluxes incorrect | sgp30ebbrE15.b1 |
D130110.5 | SGP/EBBR/E12 - Sensible and latent heat fluxes intermittently incorrect | sgp30ebbrE12.b1 |
D130201.4 | SGP/EBBR/E12 - Net rad too high | sgp30ebbrE12.b1 |
D130410.10 | SGP/EBBR/E15 - AEM failure | sgp30ebbrE15.b1 |
D130410.4 | SGP/EBBR/E12 - AEM failure | sgp30ebbrE12.b1 |
D130410.5 | SGP/EBBR/E13 - Soil temp 5 offscale | sgp30ebbrE13.b1 |
D130410.6 | SGP/EBBR/E13 - Soil temp 4 failure | sgp30ebbrE13.b1 |
D130410.7 | SGP/EBBR/E13 - AEM failure | sgp30ebbrE13.b1 |
D130410.9 | SGP/EBBR/E15 - Missing data | sgp30ebbrE15.b1 |
D130507.2 | SGP/EBBR/E12 - Soil temp 1 erratic | sgp30ebbrE12.b1 |
D130621.1 | SGP/EBBR/E13 - Incorrect sensible and latent heat fluxes | sgp30ebbrE13.b1 |
D130718.3 | SGP/EBBR/E15 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE15.b1 |
D130930.1 | SGP/SWATS/E15 - Noisy East 25cm sensor data | sgpswatsE15.b1 |
D131114.3 | SGP/EBBR/E15 - Soil temp 3 failure | sgp30ebbrE15.b1 |
D131216.3 | SGP/EBBR/E12 - Multiplexer/datalogger problems | sgp30ebbrE12.b1 |
D140117.7 | SGP/EBBR/E12 - Intermittent spikes in soil temp 1 | sgp30ebbrE12.b1 |
D140318.5 | SGP/EBBR/E13 - Sensible and Latent Heat Fluxes Too Large, Net Radiation Too Large | sgp30ebbrE13.b1 |
D150309.5 | SGP/EBBR/E13 - Reprocess: Incorrect data logger program | sgp30ebbrE13.b1 |
D930428.2 | SGP/EBBR/E13 - incorrect home signal | sgp30ebbrE13.b1 |
D930503.2 | SGP/EBBR/E13 - incorrect meteorological observations | sgp30ebbrE13.b1 |
D931108.3 | SGP/EBBR/E13 - pressure calibration | sgp30ebbrE13.b1 |
D931108.4 | SGP/EBBR/E13 - solid moisture correction | sgp30ebbrE13.b1 |
D940105.1 | Incorrect readings for pressure sensor | sgp30ebbrE15.b1 |
D940105.4 | SGP/EBBR/E15 - Questionable data due to low voltage at E15 | sgp30ebbrE15.b1 |
D940106.2 | SGP/EBBR/E12 - Invalid data due to blown AEM fuse at E12 | sgp30ebbrE12.b1 |
D940106.5 | SGP/EBBR/E13 - Invalid data during disconnection of AEM at E13 | sgp30ebbrE13.b1 |
D940511.2 | SGP/EBBR/E13 - SM4 Replacement | sgp30ebbrE13.b1 |
D940616.3 | SGP/EBBR/E12 - Wind Direction | sgp30ebbrE12.b1 |
D940711.3 | SGP/EBBR/E12 - Aspirator Failure | sgp30ebbrE12.b1 |
D940808.2 | SGP/EBBR/E12 - Stopped Ventilation Fan | sgp30ebbrE12.b1 |
D940909.1 | SGP/EBBR/E12 - Miscellaneous Problems Affecting Data | sgp30ebbrE12.b1 |
D941021.12 | SGP/EBBR/E12 - Net Radiometer Hemisphere Changes | sgp30ebbrE12.b1 |
D941021.13 | SGP/EBBR/E15 - Net Radiometer Hemisphere Changes | sgp30ebbrE15.b1 |
D941021.5 | SGP/EBBR/E13 - Soil Temperature Aberations | sgp30ebbrE13.b1 |
D941021.6 | SGP/EBBR/E12 - Low home_15 Values | sgp30ebbrE12.b1 |
D941021.8 | SGP/EBBR/E15 - Net Radiometer Hemisphere Changes | sgp30ebbrE15.b1 |
D941208.1 | SGP/EBBR/E13 - Net Radiation - Hemisphere Replacement | sgp30ebbrE13.b1 |
D950126.1 | SGP/EBBR/E13 - Incorrect Soil Temperature #4 | sgp30ebbrE13.b1 |
D950126.4 | SGP/EBBR/E15 - Frozen Wind Speed Instrument | sgp30ebbrE15.b1 |
D950626.1 | SGP/EBBR/E13 - Frozen Wind Speed Sensor | sgp30ebbrE13.b1 |
D950626.15 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp30ebbrE12.b1 |
D950626.16 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp30ebbrE12.b1 |
D950626.2 | SGP/EBBR/E13 - Frozen Wind Speed Sensor | sgp30ebbrE13.b1 |
D950626.20 | SGP/EBBR/E15 - Battery Voltage Drop, Storage Module Change | sgp30ebbrE15.b1 |
D950626.3 | SGP/EBBR/E15 - Frozen Wind Speed Sensor | sgp30ebbrE15.b1 |
D950626.7 | SGP/EBBR/E13 - Reprocess: Soil Temperature Malfunction | sgp30ebbrE13.b1 |
D950719.2 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp30ebbrE12.b1 |
D950815.2 | SGP/EBBR/E13 - Low Battery Voltage and AEM Left on Manual | sgp30ebbrE13.b1 |
D950816.2 | SGP/EBBR/E12 - AEM Failure | sgp30ebbrE12.b1 |
D950816.3 | SGP/EBBR/E15 - AEM Home 15 Values High | sgp30ebbrE15.b1 |
D950828.1 | SGP/EBBR/E13 - Battery Voltage Drop | sgp30ebbrE13.b1 |
D950908.1 | SGP/EBBR/E15 - AEM Not Exchanging | sgp30ebbrE15.b1 |
D950908.3 | SGP/EBBR/E12 - Wind Direction Malfunction | sgp30ebbrE12.b1 |
D950921.2 | SGP/EBBR/E15 - AEM Replaced | sgp30ebbrE15.b1 |
D950921.3 | SGP/EBBR/E12 - AEM replacement | sgp30ebbrE12.b1 |
D951113.1 | SGP/EBBR/E13 - Wind Direction Set Pin Slippage | sgp30ebbrE13.b1 |
D951113.6 | SGP/EBBR/E13 - Battery voltage drop | sgp30ebbrE13.b1 |
D951116.1 | SGP/EBBR/E13 - AEM Exchange Stopped in Snow and Freezing Rain | sgp30ebbrE13.b1 |
D951116.4 | SGP/EBBR/E15 - AEM Exchange Stopped in Snow and Freezing Rain | sgp30ebbrE15.b1 |
D951127.3 | SGP/EBBR/E12 - AEM Failure/Right Radiation Shield OFF | sgp30ebbrE12.b1 |
D951220.5 | SGP/EBBR/E15 - Annual calibration changeout | sgp30ebbrE15.b1 |
D951220.6 | SGP/EBBR/E13 - battery voltage drop | sgp30ebbrE13.b1 |
D960104.4 | SGP/EBBR/E15 - Wind Speed Cups Frozen | sgp30ebbrE15.b1 |
D960119.1 | SGP/EBBR/E15 - Reprocess: Soil Temperature Probe Malfunction | sgp30ebbrE15.b1 |
D960119.2 | SGP/EBBR/E15 - Battery Voltage Drop | sgp30ebbrE15.b1 |
D960320.3 | SGP/EBBR/E12 - Wind Speed Cups Frozen | sgp30ebbrE12.b1 |
D960508.5 | SGP/EBBR/E12 - 3-month check | sgp30ebbrE12.b1 |
D960508.6 | SGP/EBBR/E13 - 3-month check | sgp30ebbrE13.b1 |
D960508.7 | SGP/EBBR/E15 - 3-month check | sgp30ebbrE15.b1 |
D960606.1 | SGP/EBBR/E13 - Annual Calibration changeout | sgp30ebbrE13.b1 |
D961122.11 | SGP/EBBR/E13 - Wind Direction Incorrect | sgp30ebbrE13.b1 |
D961122.23 | SGP/EBBR/E12 - EBBR 3 Month Checks - 10 EFs | sgp30ebbrE12.b1 |
D961122.24 | SGP/EBBR/E13 - EBBR 3 Month Checks - 10 EFs | sgp30ebbrE13.b1 |
D961122.25 | SGP/EBBR/E15 - EBBR 3 Month Checks - 10 EFs | sgp30ebbrE15.b1 |
D961122.3 | SGP/EBBR/E12 - Annual Calibration Changeout | sgp30ebbrE12.b1 |
D961122.8 | SGP/EBBR/E12 - Left Air Temperature Thermocouple Incorrect | sgp30ebbrE12.b1 |
D961122.9 | SGP/EBBR/E12 - Battery Voltage Low - Fluxes Affected | sgp30ebbrE12.b1 |
D970330.1 | SGP/EBBR/E13 - Frozen Wind Speed Sensor | sgp30ebbrE13.b1 |
D970330.2 | SGP/EBBR/E15 - Wind Speed Cups frozen | sgp30ebbrE15.b1 |
D970401.1 | Controlled burn at E12 on 3/20/97 and affected data | sgp30ebbrE12.b1 |
D970703.3 | SGP/EBBR/E15 - Connections Affecting Home Signals | sgp30ebbrE15.b1 |
D970730.2 | SGP/EBBR/E12 - Wind Direction Sensor Malfunctions | sgp30ebbrE12.b1 |
D970730.3 | SGP/EBBR/E13 - CR10 Malfunction | sgp30ebbrE13.b1 |
D971021.4 | SGP/EBBR/E12 - EBBR Biannual Checks | sgp30ebbrE12.b1 |
D971021.5 | SGP/EBBR/E13 - EBBR Biannual Checks | sgp30ebbrE13.b1 |
D971021.6 | SGP/EBBR/E15 - EBBR Biannual Checks | sgp30ebbrE15.b1 |
D980117.14 | SGP/EBBR/E15 - EBBR Frozen Wind Speed | sgp30ebbrE15.b1 |
D980117.17 | SGP/EBBR/E12- EBBR Frozen Wind Speed | sgp30ebbrE12.b1 |
D980117.19 | SGP/EBBR/E13- EBBR Frozen Wind Speed | sgp30ebbrE13.b1 |
D980117.24 | SGP/EBBR/E15 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp30ebbrE15.b1 |
D980117.26 | SGP/EBBR/E12 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp30ebbrE12.b1 |
D980117.27 | SGP/EBBR/E13 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp30ebbrE13.b1 |
D980117.29 | SGP/EBBR/E15 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp30ebbrE15.b1 |
D980117.32 | SGP/EBBR/E12 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp30ebbrE12.b1 |
D980117.6 | SGP/EBBR/E12 - AEM Failure and Replacement | sgp30ebbrE12.b1 |
D980410.8 | SGP/EBBR/E13 - Wind Speed Sensor Frozen | sgp30ebbrE13.b1 |
D980410.9 | SGP/EBBR/E15 - Wind Speed Sensor Frozen | sgp30ebbrE15.b1 |
D980416.11 | SGP/EBBR/E12 - 3-Month Check | sgp30ebbrE12.b1 |
D980416.12 | SGP/EBBR/E13 - 3-Month Check | sgp30ebbrE13.b1 |
D980416.13 | SGP/EBBR/E15 - 3-Month Check | sgp30ebbrE15.b1 |
D980513.4 | SGP/EBBR/E15 - Pressure Diurnal Fluctuations | sgp30ebbrE15.b1 |
D980513.5 | SGP/EBBR/E15 - Pressure Too High | sgp30ebbrE15.b1 |
D980513.6 | SGP/EBBR/E15 - Left T/RH Probe Temperature Too Large | sgp30ebbrE15.b1 |
D980528.13 | SGP/EBBR/E12 - Wind Direction Sensor Failure | sgp30ebbrE12.b1 |
D980529.10 | SGP/EBBR/E13 - Six Month Checks | sgp30ebbrE13.b1 |
D980529.11 | SGP/EBBR/E15 - Six Month Checks | sgp30ebbrE15.b1 |
D980529.9 | SGP/EBBR/E12 - Six Month Checks | sgp30ebbrE12.b1 |
D981112.5 | SGP/EBBR/E13 - Net Radiation Incorrect - Water in Bottom Dome | sgp30ebbrE13.b1 |
D981113.3 | SGP/EBBR/E15 - Aspirator loosened from AEM mount | sgp30ebbrE15.b1 |
D990127.21 | SGP/EBBR/E12 - Wind Direction Data Incorrect (revised) | sgp30ebbrE12.b1 |
D990127.26 | SGP/EBBR/E15 - Wind Direction Data Incorrect (revised) | sgp30ebbrE15.b1 |
D990127.32 | SGP/EBBR/E13 - Wind Speed Data Incorrect | sgp30ebbrE13.b1 |
D990127.33 | SGP/EBBR - EBBR E13 Wind Speed Data Incorrect | sgp30ebbrE13.b1 |
D990127.34 | SGP/EBBR - EBBR E13 Wind Speed Data Incorrect | sgp30ebbrE13.b1 |
D990127.44 | SGP/EBBR/E15 - Wind Speed Data Incorrect | sgp30ebbrE15.b1 |
D990127.45 | SGP/EBBR - EBBR E15 Wind Speed Data Incorrect | sgp30ebbrE15.b1 |
D990127.46 | SGP/EBBR - EBBR E15 Wind Speed Data Incorrect | sgp30ebbrE15.b1 |
D990128.1 | SGP/EBBR/E12 - Wind Speed Data Incorrect | sgp30ebbrE12.b1 |
D990128.2 | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect | sgp30ebbrE12.b1 |
D990129.1 | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect | sgp30ebbrE12.b1 |
D990129.2 | SGP/EBBR/E12 - Data Incorrect | sgp30ebbrE12.b1 |
D990129.3 | SGP/EBBR/E12 - Temperature, RH, and Vapor Pressure Data Incorrect | sgp30ebbrE12.b1 |
D990129.4 | SGP/EBBR/E12 - All Temperature Measurements Incorrect | sgp30ebbrE12.b1 |
D990311.1 | SGP/EBBR/E15 - Temperatures Incorrect | sgp30ebbrE15.b1 |
D990415.1 | SGP/EBBR/E13 - Wind Speed Frozen | sgp30ebbrE13.b1 |
D990622.4 | SGP/EBBR/E12 - RH top Data Zero | sgp30ebbrE12.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/04/1999 | 2215 | 08/10/1999 | 1500 |
Subject: | SGP/EBBR - EBBR E15 Anemometer Cup Off, Wind Speed Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | An anemometer cup fell off. The following values were therefore incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1999 | 0000 | 12/21/1999 | 1320 |
Subject: | SGP/EBBR - EBBR E12 Anemometer Cups Frozen, Wind Speed Incorrect |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/17/1999 | 1700 | 12/27/1999 | 1845 |
Subject: | SGP/EBBR - EBBR E12 Net Radiation Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/27/1999 | 1530 | 07/27/1999 | 1530 |
Subject: | SGP/EBBR- EBBR E15 Air Temperatures Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | When the reference temperature sensor was being replaced, the left and right thermocouple air temperatures and humidity probe temperatures were incorrect. Affected data values were: 5 Minute: tref, tair_top, tair_bot, thum_top, thum_bot, vp_top, vp_bot 15 minute: rr_tref, rr_thum_l, rr_thum_r, tair_r, tair_l 30 minute: tref, tair_top, tair_bot, thum_top, thum_bot, vp_top, vp_bot, bowen, e, h |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/13/2000 | 2115 | 01/13/2000 | 2130 |
Subject: | SGP/EBBR - EBBR E13 Left Aspirator Not Working |
DataStreams: | sgp30ebbrE13.b1 |
Description: | A loss of the 12V DC power to the left aspirator caused it to stop operating. The affected measurements are: 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, h, e |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/1999 | 0700 | 12/14/1999 | 1500 |
Subject: | SGP/EBBR - EBBR E12 Net Radiation Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/20/1999 | 1930 | 09/23/1999 | 1930 |
Subject: | SGP/EBBR - EBBR E13 Net Radiation Incorrect |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1995 | 2200 | 07/24/1995 | 2300 |
Subject: | SGP/EBBR/E13 - failure of sensors |
DataStreams: | sgp30ebbrE13.b1 |
Description: | A lightning strike to the central cluster area shortly after 0800 GMT on July 17 caused failure of several EBBR sensors: both humidity probes, the barometer, soil heat flux #3, soil moisture # 1 and the wind direction. These failed sensors caused sensible, latent, and average soil heat flux to be incorrect until site operations performed maintenance on July 24th. Site Operations found a loose connection from soil moisture probe #1, removed barometer SN 6578 and replaced it with SN 6507, removed soil heat flux sensor #3 with SN 923022 and replaced it with SN 933199, repositioned the wind direction sensor - which was rotated approximately ninety degrees clockwise from its proper position, and removed the right humidity probe SN 460412 and replaced it with SN 460428. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1995 | 2200 | 09/22/1995 | 2108 |
Subject: | SGP/EBBR/E13 - Failed Right Humidity Probe |
DataStreams: | sgp30ebbrE13.b1 |
Description: | A lightning strike to the central cluster area on 17 July 1995 caused failure of several EBBR sensors including the right humidity probe. On July 24th, site operations removed the right humidity probe SN 460412 and replaced it with SN 460428 In less than a day the right humidity probe output soared to over 113% and has hovered around 112% since. I consider all right probe values to be incorrect due to this behavior. Without a properly functioning right humidity probe, all values of top and bottom relative humidity, top and bottom vapor pressure, Bowen ratio, and latent and sensible heat fluxes are incorrect. A working spare relative humidity probe was not available at that time. The probe was replaced with a working, calibrated probe on 22 September 1995 at about 2108 GMT. I have the examined the data since the day of the replacement and find that the new probe is working well. All E13 EBBR measurements are presently correct. The old probe S/N was 460428, the new S/N is 460413. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1995 | 2200 | 07/25/1995 | 1930 |
Subject: | SGP/EBBR/E13- Left humidity probe replaced |
DataStreams: | sgp30ebbrE13.b1 |
Description: | A lightning strike to the central cluster area on 17 July 1995 caused the left humidity probe to fail. Some of the period of incorrect data has been discussed in D0000531.4. The left humidity probe was replaced on 25 July 1995 at 1925 GMT (old SN 460413, new SN 460435). |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2000 | 0130 | 12/15/2000 | 1630 |
Subject: | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The anemometer was frozen stopped by freezing rain; the indicated data is incorrect. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2000 | 0730 | 12/18/2000 | 1115 |
Subject: | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The anemometer was frozen stopped by freezing rain; the indicated data is incorrect. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2000 | 2130 | 12/12/2000 | 1715 |
Subject: | SGP/EBBR/E15 - EBBR E15 Wind Speed Iced |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The anemometer was frozen stopped by freezing rain. Indicated data is incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2000 | 0645 | 12/18/2000 | 1101 |
Subject: | SGP/EBBR/E12 - E12 EBBR Wind Direction Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The wind direction vane was frozen stopped in one direction by icing. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2000 | 0645 | 12/18/2000 | 1101 |
Subject: | SGP/EBBR/E12 - E12 EBBR Wind Speed Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The wind speed sensor cups were frozen stopped by icing. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2000 | 0000 | 02/08/2000 | 1531 |
Subject: | SGP/EBBR/E12 - E12 EBBR AEM Stuck - Data Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2001 | 1730 | 01/04/2001 | 1731 |
Subject: | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions. Incorrect Bowen ratio, and latent and sensible heat fluxes resulted. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/16/2000 | 2130 | 03/19/2000 | 1701 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Low battery voltage caused all data to be incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/2000 | 0130 | 11/06/2000 | 0431 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Low battery voltage caused all data to be incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/2000 | 0120 | 11/06/2000 | 2255 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | All data was incorrect for an unknown reason. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/2000 | 0945 | 11/12/2000 | 1116 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/24/2000 | 2230 | 02/24/2000 | 2231 |
Subject: | SGP/EBBR/E13 - E13 EBBR Heat Capacities Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The soil heat capacities were incorrect, a result of the missing data from the previous half hour. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/13/2000 | 0015 | 11/14/2000 | 0031 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/28/2000 | 1230 | 02/28/2000 | 1231 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/29/2000 | 1300 | 02/29/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data were incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2000 | 0000 | 02/23/2000 | 1431 |
Subject: | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions. Incorrect Bowen ratio, and latent and sensible heat fluxes resulted. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/12/2000 | 1300 | 03/12/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/11/2000 | 1300 | 03/11/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/2000 | 1300 | 03/08/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/05/2000 | 1300 | 03/05/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2000 | 1300 | 03/01/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2000 | 0000 | 03/04/2000 | 1501 |
Subject: | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions. Incorrect Bowen ratio, and latent and sensible heat fluxes resulted. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/13/2000 | 1300 | 03/13/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/15/2000 | 1300 | 03/15/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/22/2000 | 1300 | 03/22/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/23/2000 | 1300 | 03/23/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/26/2000 | 1300 | 03/26/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/27/2000 | 1300 | 03/27/2000 | 1301 |
Subject: | SGP/EBBR/E13 - E13 EBBR All Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Battery voltage was too low. All data was incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/2000 | 1730 | 03/23/2000 | 1901 |
Subject: | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions. Incorrect Bowen ratio, and latent and sensible heat fluxes resulted. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/2000 | 0200 | 12/14/2000 | 2301 |
Subject: | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions. Incorrect Bowen ratio, and latent and sensible heat fluxes resulted. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/31/2000 | 2300 | 12/31/2000 | 2331 |
Subject: | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions. Incorrect Bowen ratio, and latent and sensible heat fluxes resulted. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2000 | 0000 | 12/31/2000 | 0000 |
Subject: | SGP/EBBR/E13 - E13 EBBR Soil Temperature #4 Suspect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Temperature #4 produced noisy measurements, resulting in quantities calculated from it to be of suspect quality. This condition normally occurred early in the GMT day. Sensible (h) and latent (e) heat fluxes were not normally greatly affected. Average surface heat flow was normally slightly underestimated. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2000 | 0000 | 12/14/2000 | 1931 |
Subject: | SGP/EBBR/E13 - E13 EBBR Wind Direction Iced |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The wind direction sensor was iced stopped for the indicated period. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/13/2000 | 1930 | 01/12/2001 | 2001 |
Subject: | SGP/EBBR/E13 - E13 EBBR Soil Heat Flow #4 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #4 was large positive or negative, but always incorrect during the indicated period. This resulted in overestimates or underestimates of laetnt and sensible heat fluxes and average soil heat flow. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2000 | 1430 | 02/29/2000 | 0231 |
02/05/2000 | 1500 | 02/06/2000 | 1231 |
02/23/2000 | 0300 | 02/23/2000 | 2001 |
02/19/2000 | 1700 | 02/20/2000 | 0201 |
03/01/2000 | 1430 | 03/04/2000 | 0801 |
03/04/2000 | 1430 | 03/07/2000 | 1601 |
02/24/2000 | 0200 | 02/24/2000 | 1501 |
02/08/2000 | 1500 | 02/10/2000 | 1931 |
03/11/2000 | 1530 | 03/12/2000 | 0331 |
02/20/2000 | 1530 | 02/21/2000 | 1701 |
03/12/2000 | 1430 | 03/16/2000 | 1831 |
02/01/2000 | 1730 | 02/05/2000 | 0131 |
02/29/2000 | 1630 | 03/01/2000 | 0931 |
03/17/2000 | 1800 | 03/21/2000 | 1531 |
02/06/2000 | 1430 | 02/08/2000 | 0701 |
02/25/2000 | 0030 | 02/27/2000 | 0501 |
Subject: | SGP/EBBR/E15 - E15 EBBR Reference Temperature Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The reference temperature was incorrect during the indicated periods. This temperature is used to adjust air temperature measurements; therefore air temperature and resulting sensible and latent heat fluxes and Bowen ratio are incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/2000 | 1700 | 03/17/2000 | 1701 |
Subject: | SGP/EBBR/E15 - E15 EBBR Data Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | All of the measurements (except, battery voltage, time_offset, lat, lon, etc.) were incorrect during the installation of a new reference temperature sensor. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/2000 | 1600 | 03/17/2000 | 1631 |
Subject: | SGP/EBBR/E15 - E15 EBBR Data Missing |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The data for this period was missing, during replacement of the reference temperature sensor. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/04/2000 | 1530 | 04/04/2000 | 1531 |
Subject: | SGP/EBBR/E15 - E15 EBBR Data Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | All of the measurements (except, battery voltage, time_offset, lat, lon, etc.) were incorrect during a logger upgrade. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/04/2000 | 1500 | 04/04/2000 | 1501 |
Subject: | SGP/EBBR/E15 - E15 EBBR Data Missing |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The data for this period was missing, during an upgrade of the data logger. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/2000 | 0130 | 03/17/2000 | 0331 |
Subject: | SGP/EBBR/E15 - E15 EBBR Some Soil Temperatures and Heat Flows Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | For an unknown reason, some of the soil temperatures and soil heat flows were incorrect, leading to many of the calculated quantities being incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/04/2000 | 1830 | 04/04/2000 | 1831 |
Subject: | SGP/EBBR/E15 - E15 EBBR Some Soils and Flux Data Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The soil heat capacity measurements were incorrect for an unknown reason, resulting in incorrect average soil heat flow and latent and sensible heat fluxes. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/31/2000 | 1930 | 01/09/2001 | 1701 |
09/21/2000 | 0130 | 09/22/2000 | 1331 |
09/22/2000 | 2300 | 10/03/2000 | 1531 |
Subject: | SGP/EBBR/E15 - E15 EBBR AEM Stuck in Middle |
DataStreams: | sgp30ebbrE15.b1 |
Description: | When the AEM does not complete switching and becomes hung at a mid position, the indicated data measurements are incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/03/2000 | 1545 | 10/03/2000 | 1815 |
Subject: | SGP/EBBR/E15 - E15 EBBR AEM Replacement |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Large home signals occured while the AEM was being replaced; the indicated data measurements are incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/04/2000 | 1045 | 10/04/2000 | 1316 |
10/05/2000 | 0700 | 10/05/2000 | 1601 |
10/05/2000 | 1700 | 10/05/2000 | 1901 |
Subject: | SGP/EBBR/E15 - E15 EBBR Battery Voltage Low |
DataStreams: | sgp30ebbrE15.b1 |
Description: | When EBBR battery voltage is 10.4 volts or less, the measurements are considered to be incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/15/2000 | 0730 | 10/17/2000 | 1516 |
Subject: | SGP/EBBR/E15 - E15 EBBR Incorrect Net Radiation |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Incorrect net radiation resulted in incorrect sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/1999 | 0000 | 03/08/2001 | 1931 |
Subject: | SGP EBBR E13 - E13 EBBR Soil T #4 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Temperature #4 floated around, causing average soil heat flow to sometimes be too small (resulting too small a sensible heat flux and too large a latent heat flux) or too large (resulting in too large a sensible heat flux and too small a latent heat flux). Investigation of g4 will indicate when these conditions occurred and the likely effect on sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/03/2001 | 1625 | 04/03/2001 | 1716 |
10/18/2001 | 1930 | 10/18/2001 | 2116 |
Subject: | SGP EBBR E12 - E12 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/04/2001 | 1835 | 10/04/2001 | 1934 |
04/20/2001 | 1720 | 04/20/2001 | 1749 |
Subject: | SGP EBBR E13 - E13 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/17/2001 | 1850 | 04/17/2001 | 1945 |
10/02/2001 | 1604 | 10/02/2001 | 1742 |
Subject: | SGP EBBR E15 - E15 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2001 | 1900 | 04/17/2001 | 1631 |
04/20/2001 | 2130 | 04/21/2001 | 0931 |
04/27/2001 | 0030 | 05/01/2001 | 1431 |
04/21/2001 | 2030 | 04/26/2001 | 1501 |
04/17/2001 | 2330 | 04/18/2001 | 1631 |
04/06/2001 | 2030 | 04/11/2001 | 1731 |
04/18/2001 | 2100 | 04/20/2001 | 1301 |
Subject: | SGP EBBR E12 - E12 EBBR Data Incorrect From AEM In One Position |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/27/2001 | 1735 | 06/26/2001 | 1501 |
Subject: | SGP EBBR E15 - E15 EBBR Battery Voltage Low, Data Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | When the battery voltage is 10.4 volts or below, all selected data should be considered to be incorrect. See the battery voltage in the 15 minute data to determine times of incorrect data. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2001 | 1930 | 10/11/2001 | 1931 |
Subject: | SGP EBBR E15 - E15 EBBR Data Zeros Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The data was all zeros after a logger restart for 5 , 15, and 30 minute periods. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2001 | 1508 | 10/11/2001 | 1931 |
Subject: | SGP EBBR E15 - E15 EBBR Recalibration Changeout |
DataStreams: | sgp30ebbrE15.b1 |
Description: | During the indicated period the EBBR unit was being changed out with a recalibrated unit. All data is incorrect or missing. Unit #14 was removed; #6 was installed. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1700 | 01/18/2002 | 0001 |
Subject: | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil heat Flows #1 and #2 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow probes #1 and #2 were incorrect during the indicated period (and for some time afterward, to be covered in another DQR). Outputs from the probes were typically too large negative or too large positive. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1715 | 10/05/2001 | 1731 |
Subject: | SGP EBBR E13 - E13 EBBR Data Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The 5 and 15 minute data was zero and thus the thirty minute data was also incorrect. This occurs after the restart of an EBBR system, in this case after a recalibration unit changeout. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/08/2001 | 2000 | 10/12/2001 | 1731 |
Subject: | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The left T/RH Probe Temperature was often incorrect, causing the other indicated measurements to be incorrect also. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/2002 | 2330 | 01/07/2002 | 2331 |
01/06/2002 | 1930 | 01/06/2002 | 2101 |
01/09/2002 | 0330 | 01/18/2002 | 0001 |
01/08/2002 | 1730 | 01/08/2002 | 1801 |
01/05/2002 | 1930 | 01/05/2002 | 1931 |
10/12/2001 | 1735 | 10/18/2001 | 1601 |
11/22/2001 | 0130 | 11/25/2001 | 1531 |
Subject: | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The left T/RH Probe Temperature was often incorrect, causing the other indicated measurements to be incorrect also. When the home30 signal had an offset, the top RH probe temperature was incorrect but not the bottom RH probe temperature. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/2001 | 1545 | 12/28/2001 | 1931 |
10/09/2001 | 0245 | 10/09/2001 | 2145 |
Subject: | SGP EBBR E13 - E13 EBBR AEM in Mid Position |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM stopped before reaching the end of it's travel, causing the home signals to be between 0 and 3 during much of this period (therefore the data is colored yellow). All gradient data, sensible heat flux, latent heat flux, and the Bowen ratio are incorrect during this condition. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/2001 | 1930 | 01/18/2002 | 0001 |
10/12/2001 | 1315 | 11/25/2001 | 1541 |
Subject: | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM home30 signal is offset by approximately 25; it appears that the electronics of the AEM is adding the home15 and home30 voltages together when the AEM is in the home30 position. All gradient data, sensible heat flux, latent heat flux, and the Bowen ratio are incorrect during this condition. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2001 | 2245 | 10/12/2001 | 1301 |
Subject: | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset or AEM in Mid Position |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM stopped before reaching the end of it's travel, causing the home signals to be between 0 and 3 during part of this period. The AEM home30 signal is offset by approximately 25 during part of this period; it appears that the electronics of the AEM is adding the home15 and home30 voltages together when the AEM is in the home30 position. All gradient data, sensible heat flux, latent heat flux, and the Bowen ratio are incorrect during these conditions. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 10/05/2001 | 1401 |
Subject: | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | This condition occurred most of the time during the indicated period (hence color yellow). The left air temperature was incorrect only when the AEM was in the home 30 position. This only affected the bottom air temperature calculation. However, it made the latent heat flux, sensible heat flux, and Bowen ratio incorrect. The sensor was improperly inserted into the aspirator shield and was pinched between the shield and the T/RH probe. When the AEM was in the home30 position, the aspirator hose position may have caused the sensor to short to ground. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2001 | 0530 | 03/01/2001 | 2356 |
Subject: | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | This condition occurred most of the time during the indicated period (hence color yellow). The left air temperature was incorrect only when the AEM was in the home 30 position. This only affected the bottom air temperature calculation. However, it made the latent heat flux, sensible heat flux, and Bowen ratio incorrect. The sensor was improperly inserted into the aspirator shield and was pinched between the shield and the T/RH probe. When the AEM was in the home30 position, the aspirator hose position may have caused the sensor to short to ground. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/2001 | 1935 | 03/31/2001 | 2356 |
Subject: | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Temperature #4 was often incorrect, typically too large negative, during this period, causing other measurements calculated with it to be incorrect also. This was caused by a bad multiplexor channel, which was discovered by the vendor during recalibration of the unit later. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 10/05/2001 | 1401 |
Subject: | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Temperature #4 was often incorrect, typically too large negative, during this period, causing other measurements calculated with it to be incorrect also. This was caused by a bad multiplexor channel, which was discovered by the vendor during recalibration of the unit later. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/2001 | 1545 | 12/28/2001 | 1931 |
Subject: | SGP/EBBR/E13 - Left T/RH Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | During much of the indicated period the Left T/RH Temperature was incorrect. Because the home signal was between 0 and 3, the temperature was incorrect when the AEM was at the bottom position, but was correct when the AEM was at the top position. This was caused by a short created when the sensor was mispositioned in the aspirator housing and enough strain on the cable for it to bring it into contact with the housing in the bottom position. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/18/2002 | 0005 | 01/25/2002 | 2201 |
Subject: | SGP/EBBR/E13 - Left Humidity Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The left humidity probe temperature was incorrect much of the time, as was the top humidity temperature and vapor pressure. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2002 | 2200 | 01/25/2002 | 2201 |
Subject: | SGP/EBBR/E13 - Data incorrect during maintenance |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The 5, 15, and 30 minute measurements were zero or offscale at 2200 GMT only. Electronic connections were being checked at that time. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2002 | 2010 | 01/25/2002 | 2101 |
Subject: | SGP/EBBR/E13 - Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/13/2001 | 1700 | 11/13/2001 | 1801 |
Subject: | SGP/EBBR/E15 - Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/1995 | 1400 | 10/14/1995 | 1700 |
Subject: | SGP/EBBR/E12 - 3-month Check |
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. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/23/1994 | 1515 | 11/23/1994 | 1630 |
Subject: | SGP/EBBR/E12 - T/RH Check |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/1994 | 2005 | 11/04/1994 | 2100 |
Subject: | SGP/EBBR/E13 - T/RH Check |
DataStreams: | sgp30ebbrE13.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: 2005, 2010, 2015, 2020, 2025, 2030, 2035, 2040, 2045, 2050, 2055, 2100, 2105 15 minute: 2015, 2045, 2100, 2115 30 minute: 2030, 2100 (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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/1994 | 1650 | 11/07/1994 | 1830 |
Subject: | SGP/EBBR/E15 - T/RH Check |
DataStreams: | sgp30ebbrE15.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: 1650, 1655, 1700, 1705, 1710, 1715, 1720, 1725, 1730, 1735, 1740, 1745, 1750, 1755, 1800, 1805 15 minute: 1700, 1715, 1730, 1745, 1800, 1815 30 minute: 1700, 1730, 1800, 1830 (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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/06/1995 | 0000 | 10/06/1995 | 2359 |
Subject: | SGP/EBBR/E13 - 3-month Check |
DataStreams: | sgp30ebbrE13.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. Time of the check is not known, so the entire day has been flagged as suspect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/10/1995 | 1800 | 10/10/1995 | 2100 |
Subject: | SGP/EBBR/E15 - 3-month Check |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/2002 | 1540 | 04/30/2002 | 1611 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/16/2002 | 1855 | 05/16/2002 | 1926 |
Subject: | SGP/EBBR/E13 - 6 Month Checks |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/2002 | 1505 | 05/14/2002 | 1546 |
Subject: | SGP/EBBR/E15 - 6 Month Checks |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 0430 | 02/06/2002 | 1646 |
Subject: | SGP/EBBR/E12 - AEM Hung |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The automatic exchange mechanism did not exchange properly, causing other measurements to be incorrect. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2002 | 1430 | 06/12/2002 | 1501 |
Subject: | SGP/EBBR/E12 - Measurements Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | All measurements were incorrect or offscale for an unknown reason. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/28/2002 | 1800 | 07/07/2002 | 2356 |
Subject: | SGP/EBBR/E12 - Resistance Measurements Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2002 | 2202 | 03/03/2002 | 1129 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #1 was incorrect during the indicated period. 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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2002 | 2032 | 05/20/2002 | 2101 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #2 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #2 was incorrect during the indicated period. 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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1715 | 02/22/2002 | 2131 |
Subject: | SGP/EBBR/E13 - Wrong CR10 Program Installed |
DataStreams: | sgp30ebbrE13.b1 |
Description: | An old version 4 program was installed on 5 Oct 01 instead of the correct version 8 program. All of the indicated measurements are suspect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/24/2002 | 0600 | 06/14/2002 | 1431 |
Subject: | SGP/EBBR/E13 - Wind Direction Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The wind direction and sigma_wd was near zero for the indicated times. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/2002 | 1415 | 03/09/2002 | 0931 |
05/07/2002 | 1700 | 05/07/2002 | 1731 |
04/16/2002 | 1430 | 04/16/2002 | 2001 |
01/18/2002 | 0015 | 03/03/2002 | 0801 |
03/12/2002 | 0000 | 03/12/2002 | 0101 |
05/07/2002 | 0400 | 05/07/2002 | 0401 |
05/06/2002 | 0600 | 05/06/2002 | 1931 |
04/17/2002 | 1530 | 04/17/2002 | 1701 |
05/07/2002 | 0000 | 05/07/2002 | 0001 |
03/09/2002 | 0945 | 03/09/2002 | 2001 |
05/07/2002 | 0300 | 05/07/2002 | 0301 |
05/11/2002 | 1530 | 05/11/2002 | 1601 |
04/16/2002 | 2230 | 04/17/2002 | 0031 |
03/03/2002 | 0815 | 03/08/2002 | 1401 |
05/11/2002 | 1900 | 05/11/2002 | 1901 |
03/12/2002 | 0115 | 04/12/2002 | 1901 |
04/17/2002 | 2230 | 04/17/2002 | 2231 |
05/08/2002 | 2300 | 05/09/2002 | 0101 |
04/18/2002 | 1230 | 04/18/2002 | 1231 |
Subject: | SGP/EBBR/E13 - AEM Hung up |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The automatic exchange mechanism hung numerous times, but with various different measurements of home signals. In all cases, temperature and humidity gradients were incorrect; thus the Bowen ratio, sensible heat flux, and latent heat flux are incorrect for the indicated periods. Even when the home 15 and 30 signals were different (but too high) the measurements were incorrect because the program keys off of the home signals, which must be in the proper ranges. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2001 | 0000 | 06/20/2002 | 1231 |
Subject: | SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/25/2002 | 2230 | 06/30/2002 | 2356 |
Subject: | SGP/EBBR/E12 - Wind Direction Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 1200 | 01/30/2002 | 1201 |
Subject: | SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 1430 | 01/30/2002 | 1431 |
Subject: | SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/22/1995 | 2030 | 12/22/1995 | 2130 |
Subject: | SGP/EBBR/E13 - Thermocouple out of range, data incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The left thermocouple temperature for 22 December was out of range between 2030 and 2130 GMT, yielding incorrect values as listed below: 5 minute: tair_top, tair_bot 15 minute: tair_l 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/18/2002 | 0015 | 01/25/2002 | 2201 |
03/03/2002 | 1130 | 03/07/2002 | 2031 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 and #2 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #1 and #2 were incorrect during the indicated period. 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 = (g3 + g4 + g5)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 06/18/2003 | 2359 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE15.b1, sgp30ebbrE12.b1, sgp30ebbrE13.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: | sgp30ebbrE12.b1:
sgp30ebbrE15.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/01/1995 | 0000 | 06/18/2003 | 2359 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30baebbrE13.c1, sgp30baebbrE15.c1 |
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: | sgp30baebbrE13.c1:
sgp30baebbrE15.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/04/1995 | 0000 | 06/18/2003 | 2359 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30baebbrE12.c1 |
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: | sgp30baebbrE12.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 1200 | 06/18/2003 | 1159 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE12.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: | sgp30ebbrE12.b1:
sgp30ebbrE15.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/2002 | 1600 | 08/20/2002 | 1630 |
11/25/2002 | 1815 | 11/25/2002 | 1845 |
Subject: | SGP/EBBR/E12 - Data Incorrect during 6 month checks |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/2002 | 2015 | 11/14/2002 | 2045 |
Subject: | SGP/EBBR/E13 - Data Incorrect during 6 month checks |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/2002 | 1710 | 11/12/2002 | 1740 |
Subject: | SGP/EBBR/E15 - Data Incorrect during 6 month checks |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/08/2002 | 0000 | 07/09/2002 | 1330 |
Subject: | SGP/EBBR/E12 - Resistance-based Measurements Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2002 | 0000 | 07/12/2002 | 1800 |
Subject: | SGP/EBBR/E12 - Wind Direction Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The wind direction and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/2002 | 1700 | 07/23/2002 | 1729 |
09/03/2002 | 1700 | 09/03/2002 | 1729 |
08/16/2002 | 1600 | 08/16/2002 | 1629 |
Subject: | SGP/EBBR/E12 - Data zero following Logger Restart |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/09/2002 | 0000 | 10/29/2002 | 1830 |
Subject: | SGP/EBBR/E12 - Battery Voltage Low |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/2002 | 1830 | 11/25/2002 | 1900 |
10/31/2002 | 0700 | 11/12/2002 | 1730 |
Subject: | SGP/EBBR/E12 - AEM Stuck in One Position |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/16/2002 | 1720 | 12/10/2002 | 1720 |
Subject: | SGP/EBBR/E12 - Reprocess: Net Rad Calibration Coefficients |
DataStreams: | sgp30ebbrE12.b1 |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2002 | 1700 | 12/10/2002 | 1729 |
Subject: | SGP/EBBR/E12 - Data Mostly Zero Following Logger Restart |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/23/2002 | 0000 | 10/31/2002 | 2130 |
Subject: | SGP/EBBR/E13 - Wind Speed Stalling at Low Speeds |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Perhaps because of excessive bearing wear, the wind speed sensor had a high starting threshhold with wind speeds below about 2 m/s. Wind speed measurements at all speeds were probably too low. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1750 | 02/22/2002 | 2100 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Moisture #1 Offset1 |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The wrong offset (1.4656) was used in the calibration coefficients for Soil Moisture Probe #1. The correct offset is 14.656. Sensible and Latent Heat Flux measurements are not significantly affected. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/18/2002 | 1210 | 09/19/2002 | 0245 |
Subject: | SGP/EBBR/E13 - AEM Jung between Home Positions |
DataStreams: | sgp30ebbrE13.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. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2001 | 1920 | 07/09/2002 | 1522 |
Subject: | SGP/EBBR/E15 - Reprocess: Soil Moisture #1 Offset |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The wrong offset (9.5264) was used in the calibration coefficients for Soil Moisture Probe #1. The correct offset is 0.95264. Sensible and Latent Heat Flux measurements are not significantly affected. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/22/2002 | 1630 | 07/22/2002 | 1659 |
Subject: | SGP/EBBR/E15 - Data Mostly Zero Following Logger Restart |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Most of the measurements were zero, which normally happens after a datalogger restart. The restart on 07/22/02 occurred after a pressure sensor replacement. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2002 | 1300 | 12/23/2002 | 1600 |
Subject: | SGP/EBBR/E15 - Pressure Low |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The pressure measurements were too low during this period, as much as 40 mb too low. This occurred after a restart of the EBBR CR10 datalogger, for unknown reasons. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/23/2003 | 1530 | 03/04/2003 | 1645 |
01/01/2003 | 0000 | 01/10/2003 | 1630 |
02/06/2003 | 1730 | 02/18/2003 | 1715 |
04/15/2003 | 1645 | 04/15/2003 | 1700 |
Subject: | SGP/EBBR/E12 - AEM Hung Inbetween Home Positions |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The AEM was hung inbetween home positions, causing many measurements to be incorrect. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2003 | 1630 | 04/15/2003 | 1700 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2003 | 1905 | 05/01/2003 | 1935 |
Subject: | SGP/EBBR/E13 - 6 Month Checks |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/29/2003 | 1540 | 04/29/2003 | 1655 |
Subject: | SGP/EBBR/E15 - 6 Month Checks |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2001 | 1930 | 08/05/2003 | 1630 |
Subject: | SGP/EBBR/E15 - Wind Direction 10 Degrees Low |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The wind direction at E15 EBBR was 10 degrees low for the period (since installation of the EBBR unit on 10/11/01). The wind direction sensor was apparently aligned to magnetic north instead of true north at installation. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/19/2003 | 1900 | 06/19/2003 | 1900 |
Subject: | SGP/EBBR/E15 - Top Humidity reported as zero in 30 minute data. |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The top relative humidity was reported as zero in the 30 minute data. This is an apparent misreporting by the CR10 datalogger or is caused by a communications problem in accessing the data from the datalogger. It is very infrequently seen; it's actual cause is unknown. No other data was affected. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/2003 | 1830 | 05/01/2003 | 2000 |
Subject: | SGP/EBBR/E13 - Water In Net Radiometer; Surface Fluxes are Incorrect |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2003 | 2230 | 10/12/2003 | 2330 |
Subject: | SGP/EBBR/E15 - Reference Temperature Failed |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The reference temperature failed, making air temperatures, e, h, and Bowen ratio incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2003 | 0130 | 10/14/2003 | 1800 |
Subject: | SGP/EBBR/E12 - Water in Net Radiometer, Surface Fluxes Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/2003 | 1800 | 10/02/2003 | 1845 |
Subject: | SGP/EBBR/E13 - Water in Net Radiometer, Surface Fluxes Incorrect |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/2003 | 1630 | 09/30/2003 | 1600 |
Subject: | SGP/EBBR/E15 - Water In Net Radiometer, Surface Fluxes Incorrect |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2003 | 2230 | 10/12/2003 | 2359 |
Subject: | SGP/EBBR/E15 - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil Temperature #5 was incorrect. This affected many measurements, including sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 10/14/2003 | 1830 |
Subject: | SGP/EBBR/E15 - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil Temperature #5 was incorrect. This affected many measurements, including sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/05/2003 | 1400 | 11/11/2003 | 1800 |
Subject: | SGP/EBBR/E15 - AEM Hung Between Home Positions, Surface Fluxes Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The AEM was hung inbetween home positions. Therefore the sensible and latent heat fluxes are also incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 11/26/2003 | 2300 |
Subject: | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 1830 | 10/13/2003 | 1900 |
Subject: | SGP/EBBR/E13 - 6 Month Checks |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2003 | 1700 | 10/14/2003 | 1730 |
Subject: | SGP/EBBR/E15 - 6 Month Checks |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/2003 | 1750 | 10/28/2003 | 1845 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2003 | 1500 | 10/12/2003 | 2355 |
Subject: | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2003 | 2235 | 12/10/2003 | 1705 |
Subject: | SGP/EBBR/E12 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2003 | 2145 | 12/10/2003 | 0115 |
Subject: | SGP/EBBR/E13 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/2003 | 1730 | 12/14/2003 | 1830 |
Subject: | SGP/EBBR/E13 - Net Radiometer Iced Over During Storm |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The net radiometer was covered with ice from a storm. Net radiation values are incorrect, and are sometimes even negative during the daytime. Sensible and latent heat fluxes are therefore incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/2003 | 1500 | 12/15/2003 | 0000 |
Subject: | SGP/EBBR/E15 - Net Radiometer Iced Over During Storm |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The net radiometer was covered with ice from a storm. Net radiation values are incorrect, and are sometimes even negative during the daytime. Sensible and latent heat fluxes are therefore incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2003 | 1955 | 12/13/2003 | 1940 |
Subject: | SGP/EBBR/E15 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/25/2003 | 2150 | 01/20/2004 | 2030 |
Subject: | SGP/EBBR/E15 - Wind Direction About 130 Degrees Low |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The EBBR wind direction sensor developed an approximately -130 degree offset. The pin holding the vane to the shaft had fallen out. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/26/2004 | 0000 | 03/02/2004 | 1705 |
Subject: | SGP/EBBR/E15 - Net Radiometer not level |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The EBBR net radiometer at E15 was suspected to be off of level because the daily peak net radiation was recorded later than it was recorded by the SIRS. Site Ops found the EBBR net radiometer at E15 was significantly off of level (1/2 bubble tipped to the north). Adjustment of the level improved the comparison of peak time with the co-located SIRS. There was no significant effect on the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0945 | 02/02/2004 | 1820 |
02/09/2004 | 1215 | 02/09/2004 | 1430 |
Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/09/2004 | 1235 | 02/09/2004 | 1405 |
02/02/2004 | 0810 | 02/02/2004 | 1930 |
Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/09/2004 | 1125 | 02/09/2004 | 1500 |
Subject: | SGP/EBBR/E13 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/09/2004 | 1125 | 02/09/2004 | 1500 |
02/02/2004 | 0040 | 02/03/2004 | 1810 |
Subject: | SGP/EBBR/E13 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/09/2004 | 1020 | 02/09/2004 | 1430 |
02/04/2004 | 2240 | 02/05/2004 | 1840 |
02/01/2004 | 1810 | 02/02/2004 | 2040 |
Subject: | SGP/EBBR/E15 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/2004 | 2130 | 04/27/2004 | 1630 |
Subject: | SGP/EBBR/E15 - Wind Speed Incorrect |
DataStreams: | sgp30baebbrE15.c1, sgp30ebbrE15.b1 |
Description: | The cups were broken off of the wind speed sensor by hail on 4/23/04. The cups were replaced on 4/27/04. Wind speed measurements were near zero and incorrect during the indicated period. |
Measurements: | sgp30ebbrE15.b1:
sgp30baebbrE15.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/05/2004 | 0130 | 07/14/2004 | 1515 |
Subject: | SGP/EBBR/E13 - Automatic Exchange Mechanism Failure |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM was stuck in the home_15 position or reported near zero home signals during much of the indicated period. The Bowen ratio and latent and sensible heat fluxes were incorrect when the AEM was not operating properly; the periods of incorrect data can be determined from the home signal values. On 7/14/04 the AEM was replaced. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2004 | 2212 | 03/10/2004 | 2247 |
Subject: | SGP/EBBR/E12 - Incorrect Times |
DataStreams: | sgp30ebbrE12.b1, sgp30baebbrE12.c1 |
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: | sgp30ebbrE12.b1:
sgp30baebbrE12.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2004 | 2212 | 03/10/2004 | 2247 |
Subject: | SGP/SWATS/E12 - Time drift |
DataStreams: | sgpswatsE12.b1 |
Description: | The time synchronization server stopped working on Feb. 19th at 22:12:16 GMT. 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: | sgpswatsE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/11/2004 | 0230 | 08/11/2004 | 1824 |
Subject: | SGP/EBBR/E13 - Net Radiation Incorrect, Fluxes Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Rain entered the net radiometer through a crack in the upper dome and settled in the bottom dome. This caused too large net radiation measurements during the following daylight hours, until the domes were replaced and dried out the same day. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/08/2004 | 1200 | 09/15/2004 | 1930 |
Subject: | SGP/EBBR/E13 - AEM Failure, Fluxes Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM failed. Sensible and latent heat fluxes were incorrect, as well as gradient measurements. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2001 | 1500 | 09/28/2004 | 1509 |
Subject: | SGP/EBBR/E15 - Soil Moisture Coefficients Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The soil Moisture coefficients used for E15 were incorrect from the time of installation of the system in program version 8. On 9 July 02 parameter 4 (an offset value) of program step 136 was changed from 9.5264 to the correct value 0.95264 (this error had been made by the vendor). The error masked the real problem (wrong soil type) and after 9 July 02 resulted in very low soil moisture measurements. The coefficients used were for coarse sand. On 28 Sep 04 I visited the E15 site and found the soil type a fine sandy clay or fine sandy loam. I changed the coefficients at 1509 GMT to those for a very fine sandy loam; this produced reasonable soil moistures for the soil type. The old coefficients in parameters 4 through 9 for step 136 of the program were: 0.95264, -6.7859, 36.224, -58.619, 25.073, 4.2278 The new coefficients are: 10.241, -27.943, 49.523, -12.648, -52.643, 38.054 |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/2004 | 1630 | 10/12/2004 | 1700 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/2004 | 1830 | 10/28/2004 | 1900 |
Subject: | SGP/EBBR/E13 - 6 Month Checks |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/26/2004 | 1630 | 10/26/2004 | 1700 |
Subject: | SGP/EBBR/E15 - 6 Month Checks |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/2004 | 1545 | 10/27/2004 | 0645 |
Subject: | SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not 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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/01/1995 | 0000 | 06/30/2003 | 2330 |
Subject: | SGP/EBBR/E13/E15/E20/E22/E26/E4/E7/E8/E9 - BA EBBR VAP Bulk Aerodynamics |
DataStreams: | sgp30baebbrE13.c1, sgp30baebbrE15.c1 |
Description: | Fixed AEM and wind speed sensor heights were improperly used in the calculation of bulk aerodynamic sensible and latent heat fluxes instead of site specific heights. This resulted in either under-estimation or over-estimation of the sensible and latent heat fluxes. |
Measurements: | sgp30baebbrE13.c1:
sgp30baebbrE15.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/04/1995 | 2100 | 06/30/2003 | 2359 |
Subject: | SGP/EBBR/E12 - BA EBBR VAP Bulk Aerodynamics |
DataStreams: | sgp30baebbrE12.c1 |
Description: | Fixed AEM and wind speed sensor heights were improperly used in the calculation of bulk aerodynamic sensible and latent heat fluxes instead of site specific heights. This resulted in either under-estimation or over-estimation of the sensible and latent heat fluxes. |
Measurements: | sgp30baebbrE12.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2005 | 0445 | 01/12/2005 | 1310 |
01/05/2005 | 0510 | 01/08/2005 | 1745 |
Subject: | SGP/EBBR/E13 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2005 | 1010 | 01/05/2005 | 0200 |
Subject: | SGP/EBBR/E15 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0735 | 01/08/2005 | 1700 |
Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice Storm |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0935 | 01/08/2005 | 1630 |
Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice Storm |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0625 | 01/07/2005 | 1850 |
01/11/2005 | 1545 | 01/12/2005 | 0930 |
Subject: | SGP/EBBR/E13 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2005 | 1605 | 01/05/2005 | 0200 |
Subject: | SGP/EBBR/E15 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2005 | 1040 | 01/11/2005 | 0755 |
Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2005 | 1040 | 01/12/2005 | 0410 |
Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/12/2005 | 0030 | 01/12/2005 | 1545 |
Subject: | SGP/EBBR/E15 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/12/2005 | 0030 | 01/12/2005 | 0930 |
Subject: | SGP/EBBR/E15 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/25/2005 | 0430 | 02/25/2005 | 1130 |
Subject: | SGP/EBBR/E12 - Wind Speed and Direction Frozen by Ice Storm |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The wind speed and direction sensors were frozen by ice from and ice storm. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/08/2004 | 1830 | 03/01/2005 | 1630 |
Subject: | SGP/EBBR/E15 - Soil Heat Flows Undermeasured, and Latent and Sensible Heat Fluxes |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Use of the wrong soil type soil moisture coefficients caused soil moisture to be greatly undermeasured (a typical wrong value was 4% instead of the correct 17%), soil heat flows to be undermeasured, and sensible and latent heat fluxes to be overestimated. Soil heat flow plate outputs were undermeasured by up to 10%, change of energy storage was undermeasured by up to 80% and total soil heat flow was undermeasured by up to 50% as a result. This would result in approximately a 5% overestimation of both sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/1996 | 0000 | 04/19/2005 | 2359 |
Subject: | SGP/SWATS/E12 - Reprocessing Notice (RID 156) |
DataStreams: | sgpswatsE12.b1 |
Description: | See below for details of reprocessing that was completed on 20150814. Original DQR category: 5 (Transparent - Does not affect quality). ----------------------------------------------------------- The dimension "depth" in the netCDF files was incorrectly reported as 8, and has been changed. Newer files with the correct smaller depth dimension do not have extra placeholder values and thus are smaller in size. |
Measurements: | sgpswatsE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/05/1996 | 0000 | 04/19/2005 | 2359 |
Subject: | SGP/SWATS/E13 - Reprocessing Notice (RID 156) |
DataStreams: | sgpswatsE13.b1 |
Description: | See below for details of reprocessing that was completed on 20150814. Original DQR category: 5 (Transparent - Does not affect quality). ----------------------------------------------------------- The dimension "depth" in the netCDF files was incorrectly reported as 8, and has been changed. Newer files with the correct smaller depth dimension do not have extra placeholder values and thus are smaller in size. |
Measurements: | sgpswatsE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/11/2005 | 1430 | 05/13/2005 | 1900 |
Subject: | SGP/EBBR/E13 - Net Radiometer Tilted Half Degree West |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The net radiation daily peak on sunny days occured 1/2 hour after the net radiation peak at E2, E9, and the SIRS because the sensor was tipped to the west about 1/2 degree. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/08/2005 | 1900 | 07/06/2005 | 1630 |
Subject: | SGP/EBBR/E13 - Sensible and Latent Heat Fluxes Incorrect (AEM failure) |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM was stuck in the home 30 position most of this period. Therefore, the sensible and latent heat fluxes are incorrect during most of this period. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/13/2005 | 0800 | 05/24/2005 | 1700 |
Subject: | SGP/EBBR/E15 - Net Radiation Too Large - Water in Bottom |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Water in the bottom dome of the net radiometer made the measurements incorrectly large. Sensible and latent heat fluxes were therefore incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/31/2005 | 2100 |
Subject: | SGP/EBBR/E13 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Effective 20050331.2100, the EBBR.E13 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 20050331, 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 sgp30ebbrE13.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE13.a1). |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/29/2005 | 1900 |
Subject: | SGP/EBBR/E15 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Effective 20050329.1900, the EBBR.E15 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 sgp30ebbrE15.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE15.a1). |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/29/2005 | 1830 |
Subject: | SGP/EBBR/E12 - Improved EBBR CR10 Program |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/01/2005 | 2030 | 10/12/2005 | 2130 |
Subject: | SGP/EBBR/E13 - Fluxes Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM has not been reaching the home_30 position fully a few times a day on most days, resulting in zero home_30 measurements. The sensible and latent heat fluxes are incorrect when the home_30 measurement is near zero. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/17/2005 | 2230 | 10/05/2005 | 1600 |
Subject: | SGP/EBBR/E13 - Loose connections |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The tair_bot spiked around midday, as if it is temperature related, and may have indicated a loose connection. The sensible and latyent heat fluxes and Bowen ratio were incorrect when this condition occurred. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2005 | 1800 | 03/29/2005 | 1830 |
Subject: | SGP/EBBR/E12 - Average Soil Heat Flux Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2005 | 2130 | 03/31/2005 | 2100 |
Subject: | SGP/EBBR/E13 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2005 | 1800 | 03/29/2005 | 1900 |
Subject: | SGP/EBBR/E15 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/15/2005 | 2130 | 07/19/2005 | 1700 |
Subject: | SGP/EBBR/E15 - Soil Set #5 Temperature, Moisture, and Heat Flow Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Rodents chewed the cables on all three soil set #5 sensors, making the measurements incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E12 - metadata corrections |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E13 - metadata corrections |
DataStreams: | sgp30ebbrE13.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E13 data collected by ARM back to the installation of the instrument in September 1992. 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 systems 3) Correction of soil type 4) Correction of soil moisture units (from "by volume" to "gravimetric") |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E15 - metadata corrections |
DataStreams: | sgp30ebbrE15.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E15 data collected by ARM back to the installation of the instrument in September 1992. 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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2005 | 0000 | 11/08/2005 | 1815 |
Subject: | SGP/EBBR/E15 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect. |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The top dome of the net radiometer was broken, resulting in net radiations that were too small, and thus sensible and latent heat fluxes that were too small. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2006 | 1330 | 01/17/2006 | 1730 |
Subject: | SGP/EBBR/E15 - Incorrect Sensible and Latent Heat Fluxes |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Incorrect gradient measurements and sensible and latent heat fluxes resulted from the AEM not exchanging. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/27/2005 | 0000 | 12/18/2005 | 1200 |
Subject: | SGP/EBBR/E15 - Reprocess: Sensible and Latent Heat Fluxes, Soil Set #2 Sometimes Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Spikes in soil set #2 sometimes caused sensible and latent heat fluxes to be incorrect. There is no electronic connection between the soil set #2 sensors, so it is suspected that there was a problem in the soil set #2 cable bundle. A power outage ensued, after which the soil set #2 problem did not re-occur. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/27/2005 | 1730 | 01/02/2006 | 2330 |
Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect at Times |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/08/2005 | 1100 | 12/08/2005 | 1300 |
Subject: | SGP/EBBR/E12 - Multiplexer failure |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Sensible and latent heat fluxes are incorrect during a period when multiplexer #2 experienced a failure. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2005 | 0900 | 12/20/2005 | 1600 |
12/21/2005 | 0500 | 12/21/2005 | 1830 |
Subject: | SGP/EBBR/E13 - Wind Speed Sensor Frozen |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The wind speed sensor was frozen to a stopped posiiton; wind speed data is incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2006 | 2300 | 04/25/2006 | 1700 |
Subject: | SGP/EBBR/E12 - Fluxes and Gradient Measurements Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The AEM hung in one position; therefore the fluxes and gradient measurements were incorrect. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/06/2006 | 1730 | 01/09/2006 | 0730 |
02/17/2006 | 2005 | 02/20/2006 | 1030 |
01/10/2006 | 1330 | 01/10/2006 | 1930 |
Subject: | SGP/EBBR/E13 - Missing Data |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The Data was missing during these three periods for various reasons. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/22/2006 | 2330 | 01/26/2006 | 2040 |
Subject: | SGP/EBBR/E13 - Flux and Gradient Measurements Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM hung in one position; flux and gradient measurements were therefore incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/2006 | 0330 | 04/05/2006 | 1435 |
Subject: | SGP/EBBR/E13 - Net Radiation and Fluxes Suspect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The net radiometer had water in it, making the net radiation and flux measurements suspect; the latter do not appear to be incorrect, but should be considered as suspect anyway. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2006 | 1300 | 02/22/2006 | 1530 |
Subject: | SGP/EBBR/E15 - Wind Speed Sensor Frozen Stopped |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Freezing rain froze the wind speed sensor to a stopped condition during the period. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/2006 | 2300 | 04/23/2006 | 2300 |
06/03/2006 | 1900 | 06/04/2006 | 2330 |
Subject: | SGP/EBBR/E13 - Left Air Temperature Incorrect - Fluxes Affected |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The left air temperature was incorrect, thus the Bowen ratio and sensible and latent heat fluxes were incorrect also. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/2006 | 2100 | 05/01/2006 | 1530 |
06/14/2006 | 2030 | 06/15/2006 | 1430 |
06/05/2006 | 2330 | 06/06/2006 | 1600 |
Subject: | SGP/EBBR/E13 - Fluxes Incorrect, AEM Problems |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM did not function properly, thus sensible and latent heat fluxes were incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/12/2006 | 0000 | 08/15/2006 | 1800 |
Subject: | SGP/SWATS/E12 - Incorrect soil moisture |
DataStreams: | sgpswatsE12.b1 |
Description: | Temperature rise values were way to high (~40 deg C). Water potential is calculated from a rise (and subsequent drop) in temperature in the sensor that is normally ~1-5 degrees C. When the temperature rise is too high, the soil moisture data is dubious at best and unusable at worst. Since this "out-of-bounds" t_rise is so high, the soil moisture data are practically unusable. Soil temperature measurements were not affected. |
Measurements: | sgpswatsE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2006 | 1700 | 07/06/2006 | 2200 |
Subject: | SGP/EBBR/E13 - Sensible and Latent Heat Fluxes Incorrect When Pressure Offscale |
DataStreams: | sgp30ebbrE13.b1 |
Description: | There were several half hours during this period when the pressure went offscale or at least to a high value, causing the sensible and latent heat fluxes to be incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/21/2006 | 1200 | 08/29/2006 | 1630 |
Subject: | SGP/EBBR/E12 - Net Radiation, and Sensible and Latent Heat Fluxes Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/2006 | 0130 | 09/12/2006 | 1630 |
Subject: | SGP/EBBR/E12 - Soil Temperature #1 Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/31/2006 | 2030 | 09/01/2006 | 1900 |
08/05/2006 | 1730 | 08/10/2006 | 1730 |
08/23/2006 | 1700 | 08/25/2006 | 1700 |
Subject: | SGP/EBBR/E13 - Soil Heat Flow #3 Large Negative |
DataStreams: | sgp30ebbrE13.b1 |
Description: | During this period Soil Heat Flow #3 was sometimes incorrect (large negative); during those times, sensible and latent heat fluxes and average soil heat flux were sometimes (but not always incorrect). |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/24/2006 | 1530 | 08/24/2006 | 2000 |
08/22/2006 | 1630 | 08/22/2006 | 1830 |
08/29/2006 | 0830 | 08/29/2006 | 1200 |
Subject: | SGP/EBBR/E13 - Pressure and Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | During spikes in pressure upwards or downwards the sensible and latent heat fluxes were incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/28/2006 | 0030 | 08/28/2006 | 0730 |
Subject: | SGP/EBBR/E13 - Most Measurements Incorrect When Battery Voltage Too low |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Most measurements were incorrect during this period because the battery voltage was below 10.5 volts. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/17/2006 | 0700 | 10/23/2006 | 1615 |
Subject: | SGP/EBBR/E13 - Battery failure |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Data was missing entirely on parts of 10/22 and 10/23. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/02/2006 | 0400 | 09/14/2006 | 1900 |
Subject: | SGP/EBBR/E13 - Radiometer dome broken |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The top net radiometer dome was broken, yielding net radiation, sensible heat flux and latent heat flux that were too low. The BEFLUX (SIRS) net radiation can be used as a replacement for the EBBR net radiation. To correct the sensible and latent heat fluxes, determine the ratio of SIRS net radiation to EBBR net radiation for each daylight half hour and multiply that ratio times H and LE to obtain approximate corrected flux values. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/28/2007 | 2100 | 11/06/2007 | 1700 |
Subject: | SGP/SWATS/E12 - Reprocess: Incorrect calibrations |
DataStreams: | sgpswatsE12.b1 |
Description: | Incorrect data configuration program was loaded on logger resulting in incorrect coefficients applied. Data will be reprocessed with correct coefficients. |
Measurements: | sgpswatsE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/18/2008 | 1000 | 03/27/2008 | 1930 |
Subject: | SGP/EBBR/E13 - Wind direction failure |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The EBBR wind direction was stuck at 135 degrees; this reading indicates a failure of the sensor electronics. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/2008 | 1500 | 06/20/2008 | 1500 |
Subject: | SGP/EBBR/E15 - Water in dome |
DataStreams: | sgp30ebbrE15.b1 |
Description: | There was water in the bottom dome of the net radiometer. Net radiation, and sensible and latent heat fluxes were incorrect during the period. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2008 | 0030 | 06/15/2008 | 1500 |
Subject: | SGP/EBBR/E15 - Soil Heat Flow #4 Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil heat flux #4 produced too large a soil heat flow at times, resulting in it exceeding the qc check limit and causing sensible and latent heat fluxes to be incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/06/2006 | 2300 | 03/01/2016 | 1800 |
Subject: | SGP/SWATS/E15 - Sensor failure, 5cm E |
DataStreams: | sgpswatsE15.b1 |
Description: | The 5 cm sensor installed in the east profile failed on 01/06/2006 at 23:00 GMT. |
Measurements: | sgpswatsE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/07/2008 | 2000 | 11/04/2008 | 2000 |
Subject: | SGP/SWATS/E15 - Incorrect soil moisture |
DataStreams: | sgpswatsE15.b1 |
Description: | At 20:00 GMT on 05/07/08, temperature rise data from ALL sensors on both profiles began reporting values of temperature change near 0 C. These incorrect values of temperature rise result in incorrect soil moisture data for all sensors. Soil temperature data are unaffected. |
Measurements: | sgpswatsE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 0245 | 01/28/2009 | 2005 |
Subject: | SGP/EBBR/E12 - Wind Speed Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The wind speed sensor was stopped by freezing rain. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/26/2009 | 2015 | 01/28/2009 | 2000 |
Subject: | SGP/EBBR/E13 - Wind Speed Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The wind speed sensor was stopped by freezing rain. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/26/2009 | 1830 | 01/28/2009 | 1935 |
Subject: | SGP/EBBR/E15 - Wind Speed Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The wind speed sensor was frozen stopped by freezing rain. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 1930 | 02/25/2009 | 1830 |
Subject: | SGP/EBBR/E15 - Soil Moisture and Soil Temp #1 Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil Moisture #1 and Soil Temperature #1 were incorrect during this period. This situation did not affect the sensible and latent heat fluxes (EBBR programming used only the 4 good soil measurements to determine soil surface heat flux). |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/2010 | 2300 | 02/22/2010 | 1730 |
Subject: | SGP/EBBR/E12 - Wind Speed Sensor Frozen Stopped by Icing |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/19/2010 | 1930 | 05/05/2010 | 1745 |
Subject: | SGP/EBBR/E15 - Sensible and Latent Heat Fluxes Low (Net Radiation too low) |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Sensible and Latent Heat Fluxes were measured as being low because of damage to the net radiometer. The Sensible and Latent Heat fluxes can be approximated by taking the ratio of the daytime SIRS net radiation to EBBR net radiation, and then multiplying the Sensible and Latent Heat Fluxes by that ratio. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/03/2010 | 0000 | 06/08/2010 | 1800 |
Subject: | SGP/EBBR/E12 - Intermittent data loss |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/10/2010 | 1200 | 06/23/2010 | 1630 |
Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Other Measurements Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/06/2010 | 1930 | 07/21/2010 | 1400 |
Subject: | SGP/EBBR/E13 - Incorrect Sensible and Latent Heat Fluxes |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The multiplexer to which the air temperatures were connected experienced a problem, resulting in incorrect sensible and latent heat fluxes at times. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/2010 | 1200 | 09/29/2010 | 1600 |
Subject: | SGP/EBBR/E12 - Net radiation too high |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Net radiation was too high, resulting in overestimated sensible and latent heat fluxes. Net rad domes replaced. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/21/2010 | 1330 | 10/01/2010 | 2000 |
Subject: | SGP/EBBR/E13 - Net Radiation Too Large |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The EBBR Net Radiation (Rn) values maintained a ~200 Wm^-2 reading because of poor cable lead connections. Sensible and latent heat fluxes were therefore overestimated. Sensible (H) and latent heat (LE) fluxes can be estimated in the following way: H (new) = H/[1 + (EBBR Rn - SIRS net radiation)/SIRS net radiation] LE (new) = LE/[1 + (EBBR Rn - SIRS net radiation)/SIRS net radiation] |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/24/2010 | 1630 | 10/05/2010 | 1600 |
Subject: | SGP/EBBR/E15 - Sensible and Latent Heat Flux Suspect - Soil Heat Flow 5 Problem |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil Heat Flow sensor 5 was offscale at times, causing sensible and latent heat fluxes to be incorrect during those times. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2011 | 0600 | 06/23/2011 | 2000 |
Subject: | SGP/SWATS/E13 - Lightning damage |
DataStreams: | sgpswatsE13.b1 |
Description: | After a lightning strike near the CF, the SWATS trise values were reporting near zero. The current channel in the CE8 module failed, so the wire was moved to the next channel and trise values returned to normal. There are no soil moisture data available during this time period. |
Measurements: | sgpswatsE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/19/2004 | 1307 | 12/23/2004 | 2108 |
03/14/2002 | 2307 | 03/16/2002 | 0007 |
10/31/2007 | 1707 | 11/06/2007 | 2045 |
07/02/2006 | 1207 | 07/05/2006 | 1733 |
06/18/2011 | 0407 | 06/27/2011 | 1307 |
01/28/2002 | 2307 | 02/10/2002 | 1707 |
08/18/1997 | 0907 | 09/09/1997 | 1605 |
10/10/2007 | 1607 | 10/23/2007 | 1658 |
05/08/2010 | 0907 | 05/13/2010 | 1907 |
09/16/2010 | 0107 | 09/21/2010 | 1516 |
05/23/2011 | 2107 | 06/14/2011 | 1527 |
Subject: | SGP/SWATS/E15 - Missing data |
DataStreams: | sgpswatsE15.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgpswatsE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/30/2011 | 1500 | 07/15/2011 | 1400 |
Subject: | SGP/EBBR/E13 - Soil temperature #3 offscale |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Temp Sensor 3 data were missing or offscale due to a bad connection. H and LE were not normally affected, as the EBBR program "kicked" out the incorrect temperature measurements before calculating H and LE. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/29/2011 | 1530 | 08/03/2011 | 1500 |
Subject: | SGP/EBBR/E12 - Loose connection (SHF #4) |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/28/2011 | 2300 | 01/24/2012 | 1730 |
Subject: | SGP/EBBR/E15 - Soil heat flow #1 failure |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil heat flow 1 sensor wires chewed by rodents. Values less than the accepted minimum. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/28/2011 | 1400 | 02/06/2012 | 1830 |
Subject: | SGP/EBBR/E15 - Soil heat flow #5 failure |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil_heat_flow_5 sensor failed at times, resulting in sensible and latent heat fluxes being incorrect at times. Sensor was replaced 2/6/2012. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/19/2012 | 1700 | 02/12/2012 | 1630 |
Subject: | SGP/EBBR/E12 - Soil heat flux #4 intermittently incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Soil heat flux #4 measurements were sometimes incorrect and sometimes affected the sensible and latent heat flux calculations. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/06/2012 | 0000 | 05/02/2012 | 1730 |
Subject: | SGP/EBBR/E15 - Sensible and Latent heat fluxes incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil Heat Flow sensor 5 was incorrect at times and just "noisy" at other times. Therefore Sensible and Latent heat fluxes were often incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/05/2012 | 0000 | 04/25/2012 | 1630 |
Subject: | SGP/EBBR/E12 - Sensible and Latent heat fluxes incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The air and T/RH measurements were incorrect at times. Loose RH/temp connection was reseated. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/24/2012 | 1900 | 10/31/2012 | 1930 |
Subject: | SGP/EBBR/E15 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil heat flow 1 did not report correctly at times, resulting in incorrect sensible and latent heat fluxes at times. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/2012 | 1730 | 01/07/2013 | 1830 |
12/24/2012 | 1430 | 12/26/2012 | 1900 |
Subject: | SGP/EBBR/E15 - Sensible and latent heat fluxes incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The AEM stuck in between levels during these two periods. Therefore, sensible and latent heat fluxes were incorrect during these times. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/2012 | 0000 | 12/12/2012 | 1900 |
Subject: | SGP/EBBR/E12 - Sensible and latent heat fluxes intermittently incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/2012 | 1630 | 01/28/2013 | 1830 |
Subject: | SGP/EBBR/E12 - Net rad too high |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The net radiometer measurements were too large and therefore resulted in incorrect sensible and latent heat flux measurements. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/13/2013 | 0800 | 02/20/2013 | 2130 |
Subject: | SGP/EBBR/E15 - AEM failure |
DataStreams: | sgp30ebbrE15.b1 |
Description: | AEM failure; sensible and latent heat fluxes are incorrect. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/23/2013 | 2200 | 01/24/2013 | 1713 |
02/21/2013 | 0400 | 02/28/2013 | 1630 |
01/31/2013 | 1600 | 01/31/2013 | 1800 |
01/30/2013 | 1400 | 01/30/2013 | 1800 |
Subject: | SGP/EBBR/E12 - AEM failure |
DataStreams: | sgp30ebbrE12.b1 |
Description: | An AEM failure caused incorrect sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/21/2012 | 1330 | 12/06/2012 | 1530 |
Subject: | SGP/EBBR/E13 - Soil temp 5 offscale |
DataStreams: | sgp30ebbrE13.b1 |
Description: | |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/13/2013 | 2300 | 01/17/2013 | 1630 |
Subject: | SGP/EBBR/E13 - Soil temp 4 failure |
DataStreams: | sgp30ebbrE13.b1 |
Description: | |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2013 | 1600 | 02/28/2013 | 2030 |
Subject: | SGP/EBBR/E13 - AEM failure |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The AEM mechanism failed, causing sensible and latent heat fluxes to be incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2012 | 1500 | 12/11/2012 | 1730 |
02/25/2013 | 2330 | 03/02/2013 | 1800 |
Subject: | SGP/EBBR/E15 - Missing data |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2013 | 0000 | 04/11/2013 | 1730 |
Subject: | SGP/EBBR/E12 - Soil temp 1 erratic |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Soil temperature sensor 1 produced erratic data at times; sensible and latent heat fluxes were incorrect at these times. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/28/2013 | 0800 | 06/19/2013 | 1600 |
Subject: | SGP/EBBR/E13 - Incorrect sensible and latent heat fluxes |
DataStreams: | sgp30ebbrE13.b1 |
Description: | AEM Home Signal was less than the valid min, resulting in incorrect latent and sensible heat fluxes. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/10/2013 | 0630 | 07/09/2013 | 1800 |
Subject: | SGP/EBBR/E15 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The AEM did not work. Sensible and latent heat fluxes are incorrect for this period. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/14/2013 | 2100 | 08/23/2013 | 1600 |
Subject: | SGP/SWATS/E15 - Noisy East 25cm sensor data |
DataStreams: | sgpswatsE15.b1 |
Description: | The trise variable for the East 25cm sensor was sporadic beginning July 14. The values were spiking upward (dry) especially during rain events. After re-seating the wires the values returned to normal, less noisy with no spikes during rain events. |
Measurements: | sgpswatsE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/26/2013 | 1600 | 11/12/2013 | 1900 |
Subject: | SGP/EBBR/E15 - Soil temp 3 failure |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Soil temperature 3 data were incorrect, resulting in sensible and latent heat fluxes sometimes being incorrectly calculated. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2013 | 1400 | 01/02/2014 | 1730 |
Subject: | SGP/EBBR/E12 - Multiplexer/datalogger problems |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The AEM did not operate correctly at times. Sensible and latent heat fluxes were sometimes affected. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/2013 | 1530 | 12/10/2013 | 1800 |
Subject: | SGP/EBBR/E12 - Intermittent spikes in soil temp 1 |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Soil Temperature 1 spikes upward at times, sometimes affecting the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/30/2013 | 1715 | 06/06/2013 | 1330 |
Subject: | SGP/EBBR/E13 - Sensible and Latent Heat Fluxes Too Large, Net Radiation Too Large |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The net radiometer top dome broke and water entered the dome. The water settled in the bottom dome and caused net radiation measurements to be too large. Sensible and latent heat fluxes are therefore calculated to be too large. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/29/2008 | 1630 | 03/04/2010 | 1600 |
Subject: | SGP/EBBR/E13 - Reprocess: Incorrect data logger program |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The soil moisture data is incorrect. It's likely that the proper procedure was not followed during a preventative maintenance visit and an older or an incorrect EF data logger program was installed, greatly reducing the soil moisture values. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/1993 | 1201 | 07/13/1993 | 1202 |
Subject: | SGP/EBBR/E13 - incorrect home signal |
DataStreams: | sgp30ebbrE13.b1 |
Description: | EDITOR'S NOTE: This DQR refers to data collected by the EBBR at E13 prior to the begin date of regular ARM data. At that time, the data streams which contain the EBBR.E13 data were named Dsgp15ebbr1.a0 Dsgp30ebbr1.a1 Dsgp5ebbr1.a0 These data are not readily available from the ARM archive, but can be made available by special request. The actual time range of the problem described here is 921230.0000-930423.1200. EBBR1, Central Facility reported incorrect home value signals from 30 December 1992 through 23 April 1993. The home signals are used in the calculation of fluxes by the CR10 data logger. The fluxes for this period are thus invalid as reported and must be recalculated from the archived 15 minute data. The proper home signals are less than 35 for 30 minute home signal and greater than 35 for 15 minute home signal. Home signals were the same value for 15 minute and 30 minute during the period of interest, although they were not a constant value. The chronology of the situation is reported below. On 7 April 1993 I noticed the problem in the A0 data. On 30 December 1992, the automatic exchange mechanism (AEM) of the Central Facility EBBR froze up with ice and stopped working (surmised from looking at the EBBR1 data). This caused a fuse to blow and stop the mechanism from operating. However, one channel of the CR10 data logger was apparently damaged in the process. The condition of the AEM only, was noticed on 4 January 1993 by site operations personnel. The blown fuse was replaced, which started the AEM working; but AEM home signal values between 30 Dec and 04 Jan were around zero. Home values remained around zero until at least January 8, 1993. I have a gap in data archived at ANL between 8 and 15 January 1993, during which I do not know quite what was happening. On 11 January 1993 site operations personnel found that the EBBR1 battery was run down and the EBBR thus was not working. A new battery was installed. On 15 January the home values were about 34. I am assuming that they became 34 upon installation of the new battery on 11 January. Until at least 15 January the home signals stayed around 34. After that period the home signals became greater than 35 and generally were around 36. Only occasionally (a few hours here and there)were the home signals just above or below 35 to produce the proper flux outputs. On 23 April 1993, at my direction (and after a week of tests on other parts of the system), the CR10 data logger was replaced. This solved the problem. In fact, previous to this I had suggested reloading the software into the previous CR10, but the CR10 would not accept it; as soon as the machine was deactivated before that procedure it stopped working altogether. I find it amazing that it worked at all, although all data other than the home signals, and the calculated quantities dependent on them looked perfectly acceptable during the period of interest; there is no evidence that the CR10 was malfunctioning in other areas. The road to restoring the 30 Dec to 23 April data would be a rocky one, as each 15 minute data period would have to be examined to determine the proper position of the sensors on the AEM. However, it is possible to reconstruct most of the 30 minute calculated values from the 15 minute data. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/1993 | 1201 | 07/13/1993 | 1202 |
Subject: | SGP/EBBR/E13 - incorrect meteorological observations |
DataStreams: | sgp30ebbrE13.b1 |
Description: | EDITOR'S NOTE: This DQR refers ti data collected by the EBBR at E13 prior to the begin date of regular ARM data. At that time, the data streams which contain the EBBR.E13 data were named Dsgp15ebbr1.a0 Dsgp30ebbr1.a1 Dsgp5ebbr1.a0 These data are not readily available from the ARM archive, but can be made available by special request. The actual time range of the problem described here is 930417.1200-930422.1730. Beginning at 1200 UTC on 17 April 1993, EBBR1, Central Facility, outputs ramped to extreme values, some positive, some negative. These outputs ended their ramping approximately 3 hours later. Comparison with SMOS data indicate that no time averaged outputs from EBBR1 were consistent with the SMOS after 1200 UTC. It appears that the averaging instruction in the CR10 data logger had been corrupted. On 22 April site operations, at my request, tried to reenter the software; this attempt was completely unsuccessful, indicating that the CR10 probably had other problems as well. EBBR1 was offline from 1730 UTC on 22 April until 1400 UTC on 23 April, when a new CR10 was installed and the software downloaded successfully. Since a SDS utility for extracting real time data from the CF SMOS had not been established, EBBR1 was being used for weather observations. All EBBR1 measurements of meteorological quantities during the period above are invalid. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/1993 | 1200 | 11/02/1993 | 2121 |
Subject: | SGP/EBBR/E13 - pressure calibration |
DataStreams: | sgp30ebbrE13.b1 |
Description: | In the original Campbell CR10 software provided by the vendor (version 1), the EBBR had incorrect calibration pressure sensor slopes and offsets. The slopes and offset was carried through into version 2 of the software and was not discovered by the mentor (me) until sometime later. The calibration and slope did not deleteriously affect calculations in the program since only a four percent reduction in atmospheric pressure measurement resulted (the calculations are not very sensitive to small errors in pressure). The vendor does not recall how the wrong calibrations came to be used. Version 4 of the CR10 program includes the proper calibration and offset. This remedies the apparent offset problem (it was actually a calibration and offset problem). In comparisons with the co-located SMOS pressure sensor, the difference between the SMOS and EBBR pressure values appeared almost constant with time, hence the assumption of an offset problem. However, the EBBR pressure sensor offsets are so large (a consequence of tailoring the calibration curve to a small range of elevations in which the calibration applies) that the very small error in slope was difficult to recognize. The outputted pressure values for the EBBR system can be corrected with the following information and equations. Old Slope Old Offset New Slope New Offset 0.01952 81.24 0.02031 81.27 Correct Pressure = ((Current Pressure Data - 81.24)*0.02031/0.01952) + 81.27 = 1.04047*(Current Pressure Data) - 3.258 |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/1993 | 1200 | 11/02/1993 | 2121 |
Subject: | SGP/EBBR/E13 - solid moisture correction |
DataStreams: | sgp30ebbrE13.b1 |
Description: | In the original EBBR software (Version 1) for the Campbell CR10 at the Central Facility (E13), adjustment of the soil moisture for soil type was performed differently than for the other EBBR systems. This was supposed to have been changed prior to installation (according to the vendor), but the change was not made. This adjustment was carried into Version 2 and was not discovered by the mentor (me) until later. A polynomial is used to adjust the measured soil moisture for differences between the soil type at the location of installation (clay-loam assumed) and the soil type (sand) used in the calibration of the soil moisture sensor. The adjustment in the E13 EBBR only, was computed on the basis of a sandy-loam soil. Presently, a clay-loam soil type is assumed for each EBBR location. Soil types at the extended facilities have not been characterized yet, although there are hopes of doing so in the future. The effect of using a polynomial for sandy-loam soil instead of clay-loam soil is to decrease the resultant soil moisture values by approximately 14.5% when the clay-loam polynomial would indicate a soil moisture of 28.3%, and by approximately 38.3% when the clay-loam polynomial would indicate a soil moisture of 6.3%. The normal range of soil moisture at the EBBR sites is approximately 3% to 35%. The effect of the soil moisture decreases above on the adjustment to soil heat flux plate measurements is less than 1.0%. The effect on the change in energy storage in the soil (determined from the change in soil temperature over time) is a 10% decrease for a soil moisture of 28.3% and a decrease of 13.0% for a soil moisture of 6.3%. The change in energy storage is typically 5% of the total surface energy budget during mid-day and 25% at night. Therefore, the soil type adjustment error in the Central Facility EBBR resulted in approximately a 0.5% error in the surface energy budget during mid-day and 2.5% at night. These are small and acceptable errors and should not cause one to need to recalculate energy budget values. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/1993 | 1100 | 12/01/1993 | 1830 |
Subject: | Incorrect readings for pressure sensor |
DataStreams: | sgp30ebbrE15.b1 |
Description: | ARM PROBLEM IDENTIFICATION FORM (PIF) PIF No. P940105.1 Subject: SGP/Ebbr - Incorrect readings for pressure sensor at E15 Submitted By: David R. Cook Organization: Argonne National Laboratory Date Submitted: December 13, 1993 How may we contact you? e-mail: cook@anler.er.anl.gov phone: (708) 252-5840 FAX: (708) 252-9792 Submitter's Priority: 3 [Critical-1 Very Important-2 Important-3 Inconvenient-4 Interesting-5] Where was this Problem Identified: DA [Site Data System-SDS Experiment Center-EC] [Archive-A At Field Instrument-FI ] [During Data Analyis-DA Other- List Location] Does this PIF result in a Software Change Request? No Where: [ SDS, EC, or A ] Type: [Development-1 Problem-2 Enhancement-3] List Programs/Documents Affected: Configuration Identification: Does problem impact data values or cause data loss? Data values. which platform(s): EBBR, E15, Ringwood, OK Specify (or estimate) begin and end dates Begin Date 7/11/93 End Date 12/01/93 Time 1830 GMT Apparent cause of data loss, if known: SUGGESTED CAUSES: Calibration Drift. [human error, component failure, temperature, lightning ] [foreign matter, power loss, software failure, ] [communications failure, modification difficulites, specify other] Problem Description/Change Description. o For Instrument Problems ONLY, Identify MODE of Operation: Normal o Give a brief explanation with details, attach examples and any supporting information. This should include a description of analysis leading to identification of problem and, if known, recommended action. Beginning July 11, 1993, the atmospheric pressure sensor at the E15 EBBR began indicating approximately 0.2 KPa lower than the colocated SMOS. Between July 31 and August 22, 1993 the difference increased to between 0.25 and 0.30 KPa. After August 22, the difference increased to 0.3 to 0.35 KPa and remained that way until December 1, 1993. A comparison of the EBBR pressure sensor with the portable standard on December 1, 1993 indicated that the EBBR sensor was 0.04 KPa higher than the standard; this is excellent agreement considering that the uncertainty of the EBBR sensor calibration is 0.15 KPa. The consistent bias in EBBR pressure between July 11 and December 1 can be easily detected in comparisons with SMOS pressure data. No EBBR data other than pressure was affected by the pressure problem; calculations of specific heat at constant pressure (which includes the term 1/(p-vp)) times other terms (including p-.378*vp) result in no error to the third decimal point at least in the resulting Bowen Ratio. For example; assume a common vapor pressure (vp) of 2.0 kPa, a common atmospheric pressure of 97.0 kPa, and a corrupted atmospheric pressure of 96.65 kPa at the extreme. Uncorrupted Corrupted (97.0-.378*2.0)/(97.0-2.0) = 1.0131 (96.65-.378*2.0)/(96.65-2.0) = 1.0131 1.0131/1.0131 = 1.0000 There is no effect on the Bowen Ratio as a result of the corruption. Therefore, no correction to the quantities calculated using pressure is needed. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/1993 | 0300 | 11/15/1993 | 1830 |
Subject: | SGP/EBBR/E15 - Questionable data due to low voltage at E15 |
DataStreams: | sgp30ebbrE15.b1 |
Description: | On November 11, 1993 at 0300 GMT the voltage level of the battery for the EBBR at Ringwood (E15) dropped to too low a level for most of the sensors to perform properly. By 0700 GMT virtually all sensors were not indicating properly. This condition continued through 1830 GMT on November 15, 1993. No data from this EBBR should be considered valid during the period indicated, since the quality of data from all sensors is questionable. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/20/1993 | 0730 | 12/22/1993 | 1500 |
Subject: | SGP/EBBR/E12 - Invalid data due to blown AEM fuse at E12 |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/31/1993 | 1950 | 12/31/1993 | 2100 |
Subject: | SGP/EBBR/E13 - Invalid data during disconnection of AEM at E13 |
DataStreams: | sgp30ebbrE13.b1 |
Description: | On December 31, 1993 at 1950 GMT the AEM on the Central Facility EBBR was disconnected. Another AEM was then connected, on which some testing was needed before site operations could be confident that it was ready for field installation at an extended facility. At 2041 GMT the original AEM was reconnected. The following 5, 15, and 30 minute data between or for the stated times below is invalid: 5 minute (1950 to 2045 GMT): tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, home 15 minute (2000 to 2045 GMT): rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, mv_home, tair_r, tair_l 30 minute (2000 through 2100 GMT): tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h, home_15, home_30 |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/06/1994 | 1515 | 05/06/1994 | 1600 |
Subject: | SGP/EBBR/E13 - SM4 Replacement |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Moisture Probe #4 has been indicating large soil moistures in the past couple of months. At times the values have exceeded the upper limit of the acceptable range. This data could be considered questionable, although the affect on average soil moisture and quantities affected by it is very small. Therefore, I do not suggest additional flagging of the data other than that imposed by the limits. The probe was changed from S/N 92004 to 93004 on May 6, 1994 at 1530 GMT. During the exchange process a few selected periods of soil moisture #4 data is incorrect, but not so different from the other soil moisture probes as to have a significant affect on the average soil moisture or the fluxes. Additionally, the EBBR output was interrupted for a half hour while the calibration of the new probe was entered into the CR10 data logger. Therefore, all 5 minute data from 1535 to 1600 GMT, 15 minute data for 1545 and 1600 GMT, and 30 minute data for 1600 GMT is incorrect. Furthermore, disturbance of the area near the #4 soil probes (temperature, soil moisture, and heat flux) caused all three to be incorrect for the following periods: 30 minute 1530 GMT 15 minute 1515 and 1530 GMT 5 minute 1515, 1520, 1525, and 1530 GMT. Complete recovery by all three sensors did not occur for one day (which is fairly typical for near surface installations), although the differences from the other four sets of soil sensors did not deleteriously affect the averages of the soil quantities. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/03/1994 | 1200 | 06/08/1994 | 1515 |
Subject: | SGP/EBBR/E12 - Wind Direction |
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, 1994. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/18/1994 | 2000 | 06/22/1994 | 1600 |
Subject: | SGP/EBBR/E12 - Aspirator Failure |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/22/1994 | 1200 | 08/04/1994 | 1600 |
Subject: | SGP/EBBR/E12 - Stopped Ventilation Fan |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/1994 | 0230 | 08/31/1994 | 1542 |
Subject: | SGP/EBBR/E12 - Miscellaneous Problems Affecting Data |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/15/1994 | 1600 | 09/29/1994 | 1430 |
Subject: | SGP/EBBR/E12 - Net Radiometer Hemisphere Changes |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/26/1994 | 1530 | 10/11/1994 | 1910 |
Subject: | SGP/EBBR/E15 - Net Radiometer Hemisphere Changes |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/1994 | 2300 | 10/14/1994 | 1900 |
Subject: | SGP/EBBR/E13 - Soil Temperature Aberations |
DataStreams: | sgp30ebbrE13.b1 |
Description: | For a period of not quite a day, soil temperature probe #4 indicated values that were either too high or too low, for unknown reasons. After Site Operations personnel checked connectors and the probe itself, it recovered to proper values. The probe has functioned properly since then. The times and incorrect data fields are listed below. 15 minute: rr_ts4, 10/13/94: 2245 GMT; 10/14/94: 0000, 0200, 0230, 0515, 0600, 0630, 1300-1500, 1530-1715, 1815, 1845 GMT 30 minute: ts4, 10/13/94: 2300 GMT; 10/14/94: 0000, 0230, 0530-0630, 1300-1700, 1830-1900 GMT ces4, g4, ave_shf, e, h, 10/14/94: 0030, 0200-0230, 0600-0630, 1300-1900 GMT |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/03/1994 | 1900 | 09/15/1994 | 1330 |
Subject: | SGP/EBBR/E12 - Low home_15 Values |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/1994 | 1915 | 10/11/1994 | 1930 |
Subject: | SGP/EBBR/E15 - Net Radiometer Hemisphere Changes |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Incorrect data during hemisphere change. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/02/1994 | 1937 | 12/02/1994 | 2000 |
Subject: | SGP/EBBR/E13 - Net Radiation - Hemisphere Replacement |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The upper hemisphere of the net radiometer was punctured (pinhole) and thus was replaced at 1937 GMT on December 2, 1994. This resulted in a spike in the net radiation data. 5 minute q data for 1935, 1940, 1945, and 1955 GMT, 15 minute mv_q data for 1945 and 2000 GMT, and 30 minute q, e, and h data for 2000 GMT are incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/24/1994 | 0800 | 12/25/1994 | 0100 |
12/13/1994 | 0430 | 12/13/1994 | 0500 |
12/19/1994 | 0000 | 12/19/1994 | 1600 |
12/30/1994 | 1730 | 12/30/1994 | 1800 |
12/25/1994 | 1500 | 12/25/1994 | 1600 |
12/18/1994 | 0900 | 12/18/1994 | 1030 |
12/27/1994 | 0200 | 12/27/1994 | 1700 |
12/20/1994 | 0200 | 12/20/1994 | 0400 |
12/13/1994 | 1800 | 12/13/1994 | 1830 |
12/23/1994 | 0830 | 12/23/1994 | 2030 |
12/25/1994 | 0200 | 12/25/1994 | 1400 |
12/25/1994 | 1700 | 12/26/1994 | 1800 |
12/18/1994 | 1630 | 12/18/1994 | 1930 |
Subject: | SGP/EBBR/E13 - Incorrect Soil Temperature #4 |
DataStreams: | sgp30ebbrE13.b1 |
Description: | For periods of a number of days in December 1994, soil temperature probe #4 indicated incorrect values that were either too high or too low. Site Operations personnel replaced the sensor on December 30, 1994. The times and incorrect data fields are listed below. Only half hour times are listed. The incorrect data on December 30 was the result of the process of replacing the sensor during that time. Data Fields: 15 minute: rr_ts4 30 minute: ts4, ces4, g4, ave_shf, e, h Dates and Times (GMT): 12/13/94 0500, 1830 12/18/94 0900-1030, 1630-1930 12/19/94 0000-1600 12/20/94 0200-0400 12/23/94 0830-2030 12/24/94 0800-2330 12/25/94 0000-0100, 0200-1400, 1530, 1600, 1700-2330 12/26/94 0000-1800 12/27/94 0200-1700 12/30/94 1730-1800 Recomputation of the change in energy storage in the soil could be done roughly from the soil temperature sensors that were still working (roughly because the difference in soil temperature with time is determined with real-time (one minute samples) data, not from the 15 or 30 minute data). However, this would require considerable effort. The process for doing so is therefore not stated here. Contact the mentor for more information if neccesary. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/31/1994 | 2140 | 01/01/1995 | 1730 |
Subject: | SGP/EBBR/E15 - Frozen Wind Speed Instrument |
DataStreams: | sgp30ebbrE15.b1 |
Description: | On December 31, 1994 EBBR wind speed instrument froze in place from icing. Wind speeds increased sufficiently on January 1, 1995 to break the anemometer free. The wind direction instrument was not affected. The times and fields that are incorrect are shown below. 5 minute: wind_s, res_ws 12/31 2140 GMT - 1/1 1705 GMT 15 minute: wind_s 12/31 2145 GMT - 1/1 1715 GMT 30 minute: wind_s, res_ws 12/31 2200 GMT - 1/1 1730 GMT |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/14/1995 | 1100 | 02/14/1995 | 1730 |
Subject: | SGP/EBBR/E13 - Frozen Wind Speed Sensor |
DataStreams: | sgp30ebbrE13.b1 |
Description: | DQR No: Platform: EBBR Subject: Frozen Wind Speed Sensor Date Submitted: JUNE 22, 1995 Submitted By: _x_ Instrument Mentor ___ EST Member ___ Science Team Member ___ Other _____________________________ For questions or problems, please contact the ARM Experiment Center at 509-375-6898 or via email at dqr@arm.gov. Platform/Measurement: EBBR/ Wind Speed What level data: (raw,a0,a1,b1,c1 etc): a1 (15 and 30 minute) a0 (5 minute) What location was the data collected at: E13, Central Facility Period of time in question Begin Date 2/14/95 Time 1100 GMT End Time 1730 GMT Data should be labeled: ___ questionable ___ All data fields affected _X_ incorrect _X_ Only some data fields affected ___ wrong calibration ___ others Discussion of Problem: On February 14, 1995 a frontal system deposited freezing rain in central Oklahoma that resulted in the EBBR wind speed instrument becoming frozen in place at the Central Facillity (E13) for part of a day. 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 Other observations/measurements impacted by this problem: Suggested Corrections of the Problem: (e.g. change calibration factor and recompute, flag data with this comment, etc.) Flag data with this comment. Data Processing Notes Date ------------------------------------------------------------------- END |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/1995 | 0020 | 04/26/1995 | 1630 |
Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/06/1995 | 0700 | 06/07/1995 | 1830 |
Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
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 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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1995 | 0245 | 03/08/1995 | 1640 |
Subject: | SGP/EBBR/E13 - Frozen Wind Speed Sensor |
DataStreams: | sgp30ebbrE13.b1 |
Description: | On March 7, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at the Central Facility (E13). 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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/06/1995 | 1645 | 06/06/1995 | 1830 |
Subject: | SGP/EBBR/E15 - Battery Voltage Drop, Storage Module Change |
DataStreams: | sgp30ebbrE15.b1 |
Description: | For a short period on June 6, 1995 at E15, Ringwood, OK, two events resulted in a loss of data: replacement of the storage module and a low battery condition. The low battery condition apparently affected only the 1815 GMT data output. All data during this period is missing (1645-1800 GMT) of incorrect (1815-1830). |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1995 | 0145 | 03/07/1995 | 1725 |
Subject: | SGP/EBBR/E15 - Frozen Wind Speed Sensor |
DataStreams: | sgp30ebbrE15.b1 |
Description: | On March 7, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Ringwood, OK (E15). All 5, 15, and 30 minute data values indicated below are incorrect for the period indicated. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/17/1995 | 1400 | 02/22/1995 | 1500 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Temperature Malfunction |
DataStreams: | sgp30ebbrE13.b1 |
Description: | For several days, soil temperature probe #4 indicated values that were either too high or too low, for unknown reasons. After Site Operations personnel checked connections, it recovered to proper values. Affected quantities are shown below. 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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/03/1995 | 0600 | 07/07/1995 | 1605 |
Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/1995 | 1500 | 08/02/1995 | 1615 |
Subject: | SGP/EBBR/E13 - Low Battery Voltage and AEM Left on Manual |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Low battery voltage caused some data values to be incorrect beginning at 1500 GMT on August 1, 1995. The data should be carefully inspected to determine which values are incorrect. During replacement of the battery at the Central Facility EBBR on August 1, 1995, the AEM exchange toggle switch was left in the manual position, which caused the right aspirator to remain in the home position until the switch was correctly placed in the exchange position at 1616 GMT on August 2, 1995. All 5, 15, and 30 minute values of temperature, relative humidity , vapor pressure, bowen, e, and h are incorrect during the period. 15 and 30 minute values are also incorrect at 1630 GMT. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/1995 | 1700 | 09/14/1995 | 2359 |
Subject: | SGP/EBBR/E12 - AEM Failure |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/23/1995 | 0000 | 08/16/1995 | 2359 |
Subject: | SGP/EBBR/E15 - AEM Home 15 Values High |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Beginning on June 23, 1995, the home 15 value indicated greater than 70 at times. This indicates that the home 15 and 30 outputs are somehow being electronically added in the AEM. Home 15 values above 70 cause a data quality message to be output in the site operations log as the stated acceptable range for home 15 is 35 to 70. However, no data is incorrect as a result of this condition. No replacement AEM is available and site operations was not able to diagnose the problem. At present, data quality is not jeopardized. I will submit another DQR or addendum when successful repair or replacement of the AEM is accomplished. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/18/1995 | 1230 | 08/18/1995 | 1500 |
08/16/1995 | 0600 | 08/16/1995 | 1530 |
08/19/1995 | 1100 | 08/19/1995 | 1500 |
08/20/1995 | 0900 | 08/20/1995 | 1500 |
08/21/1995 | 0600 | 08/21/1995 | 1500 |
Subject: | SGP/EBBR/E13 - Battery Voltage Drop |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Sometime before August 16, 1995 the AC/DC converter was switched off and the instrument heaters were switched on. The solar panel was not able to keep the battery voltage up under these conditions. Much of the data for the periods indicated is incorrect, especially data from the sensors that require 12 volts DC power. The data would have to be inspected to determine what data is correct and what is incorrect. It would be safest to exclude all data from those periods from any analysis. Site operations switched the heaters off and turned the converter back on on August 21, 1995. As reported in a recent DQR, the fluxes from the EBBR are incorrect presently because of a malfunctioning T/RH probe; no spares are presently available. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/27/1995 | 1615 | 09/14/1995 | 1600 |
Subject: | SGP/EBBR/E15 - AEM Not Exchanging |
DataStreams: | sgp30ebbrE15.b1 |
Description: | On August 27, 1995 at approximately 1615 GMT the upper sprocket shaft of the AEM broke in two, causing the AEM to stop exchanging. The home signal values then remained at around 22 for both home_15 and Home_30. On August 28 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. The home signal values remained around -2.3 after that. The AEM will remain in this condition until a replacement is available. Therefore, the calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for all times after August 27, 1995 at 1615 GMT. The data fields listed below are incorrect after this time: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, Bowen, e, h It is not possible to reliably calculate the Bowen ratio, e, and h using the 15 minute data. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/16/1995 | 0015 | 08/30/1995 | 1757 |
Subject: | SGP/EBBR/E12 - Wind Direction Malfunction |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/27/1995 | 1615 | 09/14/1995 | 1630 |
Subject: | SGP/EBBR/E15 - AEM Replaced |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Please see DQR P950908.1, where this problem was first documented. On August 27, 1995 at approximately 1615 GMT the upper sprocket shaft of the AEM broke in two, causing the AEM to stop exchanging. The home signal values then remained at around 22 for both home_15 and Home_30. On August 28 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. The home signal values remained around -2.3 after that. On 14 September 1995, site operations personnel replaced the AEM (serial numbers unknown) and it has operated correctly since then. The calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for all times during the period listed above. The data fields listed below are incorrect: 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, Bowen, e, h It is not possible to reliably calculate the Bowen ratio, e, and h using the 15 minute data. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/1995 | 1700 | 09/14/1995 | 1830 |
Subject: | SGP/EBBR/E12 - AEM replacement |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/26/1995 | 0000 | 11/03/1995 | 2045 |
Subject: | SGP/EBBR/E13 - Wind Direction Set Pin Slippage |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The set pin bolt on the wind vane loosened, allowing the vane to turn on the shaft. Wind directions are incorrect as a result, for the period listed above. The bolt was tightened on 3 Nov 95 so that correct wind directions would result. Values that are incorrect for the period are: 5 minute: wind_d, res_ws, sigma_wd 15 minute: mv_wind_d 30 minute: wind_d, res_ws, sigma_wd |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/1995 | 0000 | 11/07/1995 | 1400 |
11/04/1995 | 1200 | 11/04/1995 | 1400 |
11/05/1995 | 0330 | 11/05/1995 | 1430 |
11/06/1995 | 0000 | 11/06/1995 | 1530 |
11/08/1995 | 0000 | 11/08/1995 | 1400 |
Subject: | SGP/EBBR/E13 - Battery voltage drop |
DataStreams: | sgp30ebbrE13.b1 |
Description: | On Friday 2 November, 1995 the instrument heaters were switched on. By 4 November, the solar panel was not able to maintain the battery voltage for the cold night conditions that existed. On Monday, 5 November the heaters were turned off, but the poor condition of the battery did not allow it, once partially drained, to recharge sufficiently for nighttime conditions. On 8 November, at 2106 GMT, the battery was replaced (resulting in missing data for 2030-2130 GMT). Most of the data for the period above is incorrect, especially data from the sensors that require at least 11 volts DC power. The data that is incorrect is listed below. 5 minute: tref, tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, q, pres, home 15 minute: rr_thum_r, rr_thum_l, rr_ts1, rr_ts2, rr_ts3, rr_ts4, rr_ts5, rr_tref, mv_hum_r, mv_hum_l, mv_pres, mv_home, mv_q, mv_hft1, mv_hft2, mv_hft3, mv_hft4, mv_hft5, tair_r, tair_l 30 minute: tair_top, tair_bot, tref, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, pres, home_15, home_30, bowen, e, h, shf, shf1, shf2, shf3, shf4, shf5, c_shf1, c_shf2, c_shf3, c_shf4, c_shf5, ts1, ts2, ts3, ts4, ts5, q, g1, g2, g3, g4, g5, ces1, ces2, ces3, ces4, ces5 Periods of time affected (these are the 30 minute periods that are incorrect - incorrect 5 and 15 minute data may also occur for all or part of the previous half hour): 4 Nov 95: 1200-1400 GMT 5 Nov 95: 0330-1430 GMT 6 Nov 95: 0000-1530 GMT 7 Nov 95: 0000-1400 GMT 8 Nov 95: 0000-1400 GMT |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/1995 | 0700 | 11/11/1995 | 0730 |
Subject: | SGP/EBBR/E13 - AEM Exchange Stopped in Snow and Freezing Rain |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/1995 | 0115 | 11/15/1995 | 2359 |
Subject: | SGP/EBBR/E15 - AEM Exchange Stopped in Snow and Freezing Rain |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/18/1995 | 0315 | 11/21/1995 | 2130 |
Subject: | SGP/EBBR/E12 - AEM Failure/Right Radiation Shield OFF |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/1995 | 1650 | 12/14/1995 | 2100 |
Subject: | SGP/EBBR/E15 - Annual calibration changeout |
DataStreams: | sgp30ebbrE15.b1 |
Description: | On December 14, 1995 the changeout for annual calibration occurred at E15, Ringwood, OK. Between 1650 and 2050 GMT no data was remotely collected. Furthermore, 5 minute data for 2050 GMT is incorrect, 15 minute data for 2045 GMT is incorrect, and 30 minute data for 2100 GMT is incorrect. A rather large jump in soil moisture appears in the data after the installation was completed (the bags holding the probes were soaked with water before installation). Soil measurements indicated greater than ambient soil moisture until a rain on late 18 December saturated the soil; after this period the probes reflected actual soil moisture conditions. The larger than normal soil moistures have little impact on the small soil heat flux during this time of year, and thus no significant affect on computed sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/1995 | 2300 | 12/14/1995 | 1430 |
12/13/1995 | 0400 | 12/13/1995 | 1800 |
12/15/1995 | 0745 | 12/15/1995 | 1515 |
12/09/1995 | 0530 | 12/09/1995 | 1415 |
Subject: | SGP/EBBR/E13 - battery voltage drop |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The E13 battery condition was such that the solar panel was not able to keep the battery voltage up (greater than 11 V DC) under cloudy conditions. The data for the periods above is incorrect; many sensors require at least 11 volts DC power. On 15 December 1995 at 1900 GMT the EBBR lost it's connection to the site data system; data after this period will be discussed in a separate DQR. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1995 | 1845 | 12/19/1995 | 1755 |
Subject: | SGP/EBBR/E15 - Wind Speed Cups Frozen |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Freezing rain, snow, and below freezing conditions during 18-19 January 1995 caused the wind speed sensor cups to freeze in a stopped state at E15, Ringwood, OK on 18 January 1995. When temperatures rose to above freezing on 19 January, 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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/20/1995 | 1600 | 01/16/1996 | 2030 |
Subject: | SGP/EBBR/E15 - Reprocess: Soil Temperature Probe Malfunction |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Malfunction of soil temperature probe #3 at 157, Ringwood, OK resulted in incorrect data values for 7 fields for the period of time listed above. The soil temperature value from probe #3 went offscale, resulting in a zero value for the soil energy storage term calculated from that probe and thus no contribution to the total soil heat flux for soils set 4 and the same for average soil heat flux. This led to incorrect sensible and latent heat flux values. The probe may have become disconnected during the 20 December site operations preventative maintenance visit. However, it also had rodent chew damage and so was removed and replaced. The fields that are incorrect are: 30 minute: ts3, ces3, g3, ave_shf, e, h 15 minute: rr_ts3. Soil temperature probe #3 was replaced at 2030 GMT on 16 January 1996. The old S/N was 95043, the new S/N is 93018. Sensible and latent heat fluxes can be recomputed by averaging the soil heat flux from the four sets of functioning soil probes; use the following equations: ave_shf = (g1 + g2 + g4 + g5)/4 e = -(q +ave_shf)/(1 + bowen) h = e * bowen, where g is total soil heat flow, q is net radiation, and bowen is Bowen Ratio. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/29/1995 | 1800 | 12/29/1995 | 1815 |
12/21/1995 | 0630 | 12/22/1995 | 1445 |
01/04/1996 | 0530 | 01/04/1996 | 1430 |
01/05/1996 | 2045 | 01/06/1996 | 1445 |
12/27/1995 | 0215 | 12/27/1995 | 1445 |
01/12/1996 | 0230 | 01/12/1996 | 1445 |
01/04/1996 | 1500 | 01/04/1996 | 1645 |
01/14/1996 | 0030 | 01/14/1996 | 1445 |
01/15/1996 | 0045 | 01/15/1996 | 1600 |
12/25/1995 | 0330 | 12/25/1995 | 1515 |
01/05/1996 | 1930 | 01/05/1996 | 2000 |
12/26/1995 | 0230 | 12/26/1995 | 1445 |
01/09/1996 | 0745 | 01/09/1996 | 1415 |
01/08/1996 | 0300 | 01/08/1996 | 1445 |
12/24/1995 | 0245 | 12/24/1995 | 1445 |
12/28/1995 | 0000 | 12/29/1995 | 1700 |
12/22/1995 | 2230 | 12/23/1995 | 1445 |
01/11/1996 | 0130 | 01/11/1996 | 1430 |
01/15/1996 | 2330 | 01/16/1996 | 2015 |
12/29/1995 | 1930 | 01/03/1996 | 1430 |
01/07/1996 | 0500 | 01/07/1996 | 1500 |
01/10/1996 | 0730 | 01/10/1996 | 1615 |
01/04/1996 | 1900 | 01/05/1996 | 1730 |
01/13/1996 | 0100 | 01/13/1996 | 1445 |
Subject: | SGP/EBBR/E15 - Battery Voltage Drop |
DataStreams: | sgp30ebbrE15.b1 |
Description: | From the installation of the changeout unit at E15 on 15 December 1995, the battery exhibited a slow decline in voltage. However, after a day of the AEM not operating, site operations restarted the AEM on 20 December 1995 and the battery condition declined more rapidly, such that the solar panel was not able to keep the battery voltage up (greater than 11 V DC) for nighttime conditions, even after a cloudless day. Battery voltage first dropped below 11 volts at 0635 GMT on 21 December. I requested that the solar panel voltage regulator be tested. On 16 January 1996, site operations found that the fuse in the solar panel voltage regulator was loose. After the fuse was repositioned, the battery voltage increased almost immediately to 13.5 volts and has been good since. All data for the periods above should be considered incorrect; many sensors require at least 11 volts DC power and the performance of the CR10 data logger can not be trusted at less than 11 volts. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/23/1996 | 0730 | 01/24/1996 | 1615 |
01/18/1996 | 0500 | 01/18/1996 | 2100 |
Subject: | SGP/EBBR/E12 - Wind Speed Cups Frozen |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/1996 | 1550 | 04/11/1996 | 1640 |
Subject: | SGP/EBBR/E12 - 3-month check |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/06/1996 | 1755 | 05/06/1996 | 1835 |
Subject: | SGP/EBBR/E13 - 3-month check |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/1996 | 1610 | 04/23/1996 | 1703 |
Subject: | SGP/EBBR/E15 - 3-month check |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/24/1996 | 1800 | 05/24/1996 | 2130 |
Subject: | SGP/EBBR/E13 - Annual Calibration changeout |
DataStreams: | sgp30ebbrE13.b1 |
Description: | On May 24, 1996 the changeout for annual calibration occurred at E13, Central Facility, OK. Between 1800 and 2130 GMT no data was remotely collected. Furthermore, 5 minute data inbetween 1800 and 2130 is incorrect, 15 minute data between 1800 and 2130 is incorrect, and 30 minute data for 2130 GMT is incorrect. A large jump in soil moisture appears in the data after the installation was completed (the soil bags holding the probes had a greater than ambient soil moisture). Soil measurements indicated greater than ambient soil moisture until a rain just after 0600 GMT on 1 June saturated the soil; after this period the probes reflected actual soil moisture conditions. The larger than normal soil moistures have some impact on the soil heat flux during this time of year, and thus soil heat flux from the soil flow plates and soil temperature probes, as well as average soil heat flux, computed sensible and latent heat fluxes; these quantities should be considered to be incorrect from 24 June at 2130 GMT until about 1200 GMT on June 1. Because of communication problems, data is missing from the time of the EBBR installation until 29 May 1996 at about 1815 GMT. This data may be recovered from the sneakernetted data set. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/1996 | 0700 | 08/30/1996 | 1830 |
Subject: | SGP/EBBR/E13 - Wind Direction Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Wind direction was incorrect during the period indicated due to a sensor electronics failure. On 30 August 1996 site operations replaced S/N K3035 with S/N K3034. Correct data collection resumed. Values that are incorrect for the period are: 5 minute: wind_d, res_ws, sigma_wd 15 minute: mv_wind_d 30 minute: wind_d, res_ws, sigma_wd |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/25/1996 | 1600 | 10/25/1996 | 1640 |
Subject: | SGP/EBBR/E12 - EBBR 3 Month Checks - 10 EFs |
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 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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/18/1996 | 1942 | 11/18/1996 | 2022 |
Subject: | SGP/EBBR/E13 - EBBR 3 Month Checks - 10 EFs |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/05/1996 | 1658 | 11/05/1996 | 1732 |
Subject: | SGP/EBBR/E15 - EBBR 3 Month Checks - 10 EFs |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1996 | 1000 | 10/09/1996 | 2000 |
Subject: | SGP/EBBR/E12 - Annual Calibration Changeout |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/24/1996 | 1715 | 09/24/1996 | 1730 |
Subject: | SGP/EBBR/E12 - Left Air Temperature Thermocouple Incorrect |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/1996 | 0000 | 10/09/1996 | 2359 |
Subject: | SGP/EBBR/E12 - Battery Voltage Low - Fluxes 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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/07/1997 | 0530 | 02/07/1997 | 1340 |
Subject: | SGP/EBBR/E13 - Frozen Wind Speed Sensor |
DataStreams: | sgp30ebbrE13.b1 |
Description: | On February 7, 1997 freezing rain stopped the cups of the EBBR wind speed instrument at the Central Facility (E13). All 5, 15, and 30 minute data values indicated below are incorrect for the period listed. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1995 | 1845 | 12/19/1995 | 1755 |
Subject: | SGP/EBBR/E15 - Wind Speed Cups frozen |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Freezing rain, snow, and below freezing conditions during 18-19 January 1995 caused the wind speed sensor cups to freeze in a stopped state at E15, Ringwood, OK on 18 January 1995. When temperatures rose to above freezing on 19 January, 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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/20/1997 | 2255 | 03/31/1997 | 2359 |
Subject: | Controlled burn at E12 on 3/20/97 and affected data |
DataStreams: | sgp30ebbrE12.b1 |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/15/1997 | 2245 | 04/22/1997 | 1830 |
Subject: | SGP/EBBR/E15 - Connections Affecting Home Signals |
DataStreams: | sgp30ebbrE15.b1 |
Description: | For most of the period above at E15, Ringwood, OK, home signals were very large, resulting in incorrect data. On April 22, 1997, site operations found some loose connections on the J-panels that were causing the problem. This problem affected a wide range of measurements and calculated values, rendering much of the data, including the sensible and latent heat fluxes as incorrect. Only careful examination of the data would allow some to be used as is and other quantities to be recalculated. I would request that anyone needing this data contact me for information on it's quality. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/03/1997 | 1200 | 06/08/1997 | 1515 |
Subject: | SGP/EBBR/E12 - Wind Direction Sensor Malfunctions |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1997 | 0930 | 07/25/1997 | 1600 |
Subject: | SGP/EBBR/E13 - CR10 Malfunction |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The CR10 apparently malfunctioned on 17 July 1997. This caused a variety of effects, including incorrect datalogger clock times, missing data periods, and some corrupted data fields. The CR10 was replaced on 25 July 1997; all data fields are now correct. Data users may contact the mentor for more detailed information on data quality during this period. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/10/1997 | 1652 | 04/10/1997 | 1758 |
Subject: | SGP/EBBR/E12 - EBBR Biannual Checks |
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 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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/1997 | 1419 | 04/28/1997 | 1445 |
Subject: | SGP/EBBR/E13 - EBBR Biannual Checks |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/22/1997 | 1525 | 04/22/1997 | 1546 |
Subject: | SGP/EBBR/E15 - EBBR Biannual Checks |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1997 | 0440 | 12/21/1997 | 1820 |
01/04/1998 | 0525 | 01/05/1998 | 1830 |
01/09/1998 | 2150 | 01/12/1998 | 0330 |
Subject: | SGP/EBBR/E15 - EBBR Frozen Wind Speed |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1998 | 0750 | 01/04/1998 | 1900 |
01/08/1998 | 0705 | 01/08/1998 | 1925 |
Subject: | SGP/EBBR/E12- EBBR Frozen Wind Speed |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1998 | 0625 | 01/05/1998 | 0115 |
Subject: | SGP/EBBR/E13- EBBR Frozen Wind Speed |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1998 | 0630 | 01/05/1998 | 1830 |
12/21/1997 | 0745 | 12/21/1997 | 1715 |
Subject: | SGP/EBBR/E15 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
DataStreams: | sgp30ebbrE15.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: |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1998 | 1300 | 01/15/1998 | 1715 |
Subject: | SGP/EBBR/E12 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1998 | 0745 | 01/16/1998 | 1600 |
Subject: | SGP/EBBR/E13 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1997 | 1600 | 12/29/1997 | 1730 |
Subject: | SGP/EBBR/E15 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1997 | 1700 | 12/31/1997 | 1615 |
Subject: | SGP/EBBR/E12 - EBBR Net Radiometer Domes Pierced, Water Inside - Data 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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/27/1997 | 0530 | 12/18/1997 | 1805 |
Subject: | SGP/EBBR/E12 - AEM Failure and Replacement |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/1998 | 1015 | 01/15/1998 | 1445 |
Subject: | SGP/EBBR/E13 - Wind Speed Sensor Frozen |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/1998 | 0915 | 01/14/1998 | 1920 |
Subject: | SGP/EBBR/E15 - Wind Speed Sensor Frozen |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/23/1997 | 1955 | 10/23/1997 | 2015 |
Subject: | SGP/EBBR/E12 - 3-Month Check |
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 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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/10/1997 | 1850 | 10/10/1997 | 1932 |
Subject: | SGP/EBBR/E13 - 3-Month Check |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/07/1997 | 1750 | 10/07/1997 | 1832 |
Subject: | SGP/EBBR/E15 - 3-Month Check |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/1998 | 0000 | 04/21/1998 | 1515 |
Subject: | SGP/EBBR/E15 - Pressure Diurnal Fluctuations |
DataStreams: | sgp30ebbrE15.b1 |
Description: | During this period the barometric pressure exhibited increasingly larger, and unatural, diurnal fluctuations. This has been observed at other sites previously. The sensor was replaced on April 21. The diurnal fluctuations had only a minor effect on the calculated fluxes of latent and sensible heat; the fluxes are not incorrect as a result of the problem. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/21/1998 | 1530 | 04/28/1998 | 1530 |
Subject: | SGP/EBBR/E15 - Pressure Too High |
DataStreams: | sgp30ebbrE15.b1 |
Description: | During this period the barometric pressure was consistently much greater than the true pressure, hanging around 113 kPa all of the time. The defective sensor was replaced on April 28. The calculated fluxes of latent and sensible heat are incorrect during the period. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/12/1998 | 0930 | 05/01/1998 | 1530 |
Subject: | SGP/EBBR/E15 - Left T/RH Probe Temperature Too Large |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Beginning in February, the temperature of the left T/RH probe reported too high a value at some times. The frequency of the problem increased with time until 28 April at 1520 GMT, when a defective probe was installed; the latter probe temperature indicated very high values. This continued until 1 May at 1530 GMT when a working probe was installed. Times of incorrect humidity probe temperatures can be determined by comparing 5 or 30 minute values of air temperature and humidity probe temperature; at these times the calculated bowen ratio, and the fluxes of latent and sensible heat are incorrect. The incorrect variables were: 5 minute: thum_top, thum_bot, vp_top, vp_bot 15 minute: rr_thum_l 30 minute: thum_top, thum_bot, vp_top, vp_bot, bowen, e, h |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/07/1998 | 0130 | 05/21/1998 | 1830 |
Subject: | SGP/EBBR/E12 - Wind Direction Sensor Failure |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/07/1998 | 2000 | 05/07/1998 | 2030 |
Subject: | SGP/EBBR/E13 - Six Month Checks |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/05/1998 | 1459 | 05/05/1998 | 1530 |
Subject: | SGP/EBBR/E15 - Six Month Checks |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/21/1998 | 1855 | 05/21/1998 | 1918 |
Subject: | SGP/EBBR/E12 - Six Month Checks |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/02/1998 | 0345 | 10/08/1998 | 1930 |
Subject: | SGP/EBBR/E13 - Net Radiation Incorrect - Water in Bottom Dome |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Water entered the net radiometer top dome through a hole made, probably, by migrating birds (this happens every Spring and Autumn) and accumulated in the bottom dome. This causes nighttime net radiations to be too large and daytime net radiations to be too small. The data is therefore incorrect. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/05/1998 | 1200 | 11/05/1998 | 1800 |
Subject: | SGP/EBBR/E15 - Aspirator loosened from AEM mount |
DataStreams: | sgp30ebbrE15.b1 |
Description: | The left aspirator was loosened from the AEM mount. Thus all gradients of T/RH/VP and sensible and latent heat fluxes for the period are incorrect. T/RH/VP measurements from the left probe are incorrect only through 1745 GMT. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1998 | 0245 | 12/22/1998 | 1630 |
Subject: | SGP/EBBR/E12 - Wind Direction Data Incorrect (revised) |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0005 | 01/08/1999 | 0900 |
Subject: | SGP/EBBR/E15 - Wind Direction Data Incorrect (revised) |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1515 | 01/01/1999 | 2230 |
01/08/1999 | 0205 | 01/08/1999 | 1600 |
12/21/1998 | 0015 | 12/24/1998 | 1730 |
Subject: | SGP/EBBR/E13 - Wind Speed Data Incorrect |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1515 | 01/01/1999 | 2230 |
Subject: | SGP/EBBR - EBBR E13 Wind Speed Data Incorrect |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0205 | 01/08/1999 | 1600 |
Subject: | SGP/EBBR - EBBR E13 Wind Speed Data Incorrect |
DataStreams: | sgp30ebbrE13.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: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/20/1998 | 2135 | 12/25/1998 | 1730 |
01/01/1999 | 1620 | 01/02/1999 | 2000 |
01/07/1999 | 2215 | 01/09/1999 | 0130 |
Subject: | SGP/EBBR/E15 - Wind Speed Data Incorrect |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1620 | 01/02/1999 | 2000 |
Subject: | SGP/EBBR - EBBR E15 Wind Speed Data Incorrect |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/1999 | 2215 | 01/09/1999 | 0130 |
Subject: | SGP/EBBR - EBBR E15 Wind Speed Data Incorrect |
DataStreams: | sgp30ebbrE15.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: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1700 | 01/03/1999 | 1130 |
12/20/1998 | 2335 | 12/22/1998 | 1630 |
01/07/1999 | 1805 | 01/09/1999 | 0330 |
Subject: | SGP/EBBR/E12 - Wind Speed Data Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/1999 | 1805 | 01/09/1999 | 0330 |
Subject: | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1700 | 01/03/1999 | 1130 |
Subject: | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/1998 | 1600 | 12/28/1998 | 1630 |
Subject: | SGP/EBBR/E12 - Data Incorrect |
DataStreams: | sgp30ebbrE12.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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/1998 | 1345 | 12/28/1998 | 1730 |
Subject: | SGP/EBBR/E12 - Temperature, RH, and Vapor Pressure Data Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/1998 | 1315 | 11/24/1998 | 1530 |
Subject: | SGP/EBBR/E12 - All Temperature Measurements Incorrect |
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: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/1999 | 0400 | 02/23/1999 | 1500 |
Subject: | SGP/EBBR/E15 - Temperatures Incorrect |
DataStreams: | sgp30ebbrE15.b1 |
Description: | Poor contact of the reference temperature probe leads to the J-panel or multiplexer caused frequent offscale and incorrect values of the reference temperature. All other temperature measurements (air, soil, and humidity probe) depend on the reference temperature for a correction. Therefore all temperature measurements are frequently offscale and incorrect during the specified period. The data clearly shows the offscale times. |
Measurements: | sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/13/1999 | 2330 | 03/14/1999 | 0500 |
Subject: | SGP/EBBR/E13 - Wind Speed Frozen |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Wind speed and residual wind speed during this period are incorrect caused by an ice storm. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/04/1999 | 1630 | 06/04/1999 | 1700 |
Subject: | SGP/EBBR/E12 - RH top Data Zero |
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: | sgp30ebbrE12.b1:
|