DQR ID | Subject | Data Streams Affected |
---|---|---|
D000210.1 | SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000211.13 | SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000221.3 | SGP/EBBR/E26 - Right Aspirator Not Working | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000221.6 | SGP/EBBR - EBBR E9 Anemometer Frozen, Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D000221.7 | SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000225.1 | SGP/EBBR/26 - Low Battery Condition | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000301.8 | SGP/EBBR - EBBR E9 Net Radiation Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D000301.9 | SGP/EBBR/E26 - Net Radiation Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000622.1 | SGP/EBBR/E26 - Reprocess Soil Moisture Off-Scale | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D000623.1 | SGP/EBBR/E26 - EBBR E26 Left Aspirator Not Working | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.10 | SGP/EBBR/E26 - EBBR E26 All Data Incorrect | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D000623.11 | SGP/EBBR/E26 - All Data Incorrect | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D000623.2 | SGP/EBBR/E26 - All Data Incorrect | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.3 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.5 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.6 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.7 | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D000623.8 | SGP/EBBR/E26 - All Data Incorrect | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D000623.9 | SGP/EBBR/E26 - All Data Incorrect | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D000627.10 | SGP/EBBR/E26 - Left Air Temperature Periodically Incorrect | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D000627.11 | SGP/EBBR/E26 - Reference Temperature Incorrect | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D000627.4 | SGP/EBBR/E26 - Electronics Problem | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
D000627.6 | SGP/EBBR/E26 - Soil Heat Flow #5 Incorrect | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D000627.7 | SGP/EBBR/E26 - Soil Heat Flow #1 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D000627.8 | SGP/EBBR/E26 - Soil Heat Flow #2 Large Negative | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D000627.9 | SGP/EBBR/E26 - Left Air Temperature Incorrect | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D010213.12 | SGP/EBBR/E26 - Wind Speed Iced | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D010402.1 | SGP/EBBR/E9 - E9 EBBR Wind Direction Incorrect | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D010402.2 | SGP/EBBR/E9 - E9 EBBR Wind Speed Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D010402.3 | SGP/EBBR/E9 - E9 EBBR Soil Heat Flow 1 Incorrect | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D010402.5 | SGP/EBBR/E9 - E9 EBBR Soil Heat Capacities Incorrect | sgp30ebbrE9.b1 |
D010605.20 | SGP EBBR E26 - Data Suspect, Low Battery Voltage | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D010605.22 | SGP EBBR E26 - All Data Incorrect | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D010605.23 | SGP EBBR E26 - Soil Heat Flow #1 Incorrect | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D010605.24 | SGP EBBR E26 - Soil Heat Flow #2 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010605.25 | SGP EBBR E26 - Soil Heat Flow #3 Incorrect | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D010723.3 | SGP EBBR E26 - Soil Moisture #1 Incorrect | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D010723.4 | SGP EBBR E26 - AEM Inbetween, Data Incorrect | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D010723.5 | SGP EBBR E26 - Soil Heat Flow #5 Incorrect | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D010723.7 | SGP EBBR E26 - Some Data Incorrect | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D010723.8 | SGP EBBR E26 - Some Data Incorrect | sgp30ebbrE26.b1 |
D011127.25 | SGP EBBR E9 - E9 EBBR Data Incorect During 6 Month Checks | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D011127.34 | SGP EBBR E26 - Data Incorrect During 6 Month Checks | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
D011206.1 | SGP EBBR E26 - Low Battery Voltage | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D011206.2 | SGP EBBR E26 - Battery Voltage Low | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
D011221.2 | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.3 | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.4 | SGP EBBR E9 - E9 EBBR Wind Speed Frozen Stopped | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.5 | SGP EBBR E9 - E9 EBBR Wind Direction Frozen In One Direction | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.6 | SGP/EBBR/E9 - Reprocess: E9 EBBR Soil Temperature #5 Intermittently Incorrect | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D011221.8 | SGP EBBR E9 - E9 EBBR Gradients Incorrect During Sensor Replacement | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D020110.2 | SGP EBBR E9 - E9 EBBR Right Air Temperature Incorrect | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D020628.14 | SGP/EBBR/E9 - T/RH Check | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D020628.6 | SGP/EBBR/E26 - 3-month Check | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D020716.1 | SGP/EBBR/E9 - Annual calibration changeout | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D020716.10 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D020716.18 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D020716.2 | SGP/EBBR/E9 - Annual calibration changeout | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D020717.2 | SGP/EBBR/E9 - Reprocess: Soil Temperature #5 Incorrect | sgp30ebbrE9.b1 |
D020717.3 | SGP/EBBR/E9 - Measurements All Zeros | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.00, sgp5ebbrE9.b1 |
D020717.37 | SGP/EBBR/E26 - Measurements Zero | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.b1 |
D020717.38 | SGP/EBBR/E26 - Measurements Incorrect | sgp30ebbrE26.b1 |
D020717.39 | SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D020717.4 | SGP/EBBR/E9 - Humidity Probe Measurements Incorrect | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D020717.5 | SGP/EBBR/E9 - Right Humidity Suspect | sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D020724.48 | SGP/EBBR/E26 - Annual Calibration Changeout | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D021113.1 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D021113.4 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D030110.27 | SGP/EBBR/E26 - Data Incorrect during 6 month checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030110.32 | SGP/EBBR/E9 - Data Incorrect during 6 month checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030114.5 | SGP/EBBR/E9 - REPROCESS: Soil Temperature #5 Incorrect | sgp30ebbrE9.b1 |
D030114.6 | SGP/EBBR/E9 - REPROCESS: Soil Heat Flow #4 Incorrect | sgp30ebbrE9.b1 |
D030114.8 | SGP/EBBR/E9 - Net Rad data bad during dome replacement | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D030114.9 | SGP/EBBR/E9 - AEM Malfunction | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030117.26 | SGP/EBBR/E26 - Measurements zero following logger restart | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030117.27 | SGP/EBBR/E26 - Multiplexer Problem | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030117.28 | SGP/EBBR/E26 - Water in broken Net Radiometer Dome | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030117.29 | SGP/EBBR/E26 - Battery Voltage Low | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030128.2 | SGP/EBBR/E26 - AEM Hung | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030128.3 | SGP/EBBR/E26 - Data zeros following logger restart | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030128.4 | SGP/EBBR/E26 - Left Air Temperature Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030514.8 | SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030711.6 | SGP/EBBR/E26 -Right Air Temperature Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030712.1 | SGP/EBBR/E9 - AEM Hung Inbetween Home Positions | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030712.15 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030712.2 | SGP/EBBR/E9 - Soil Heat Flow #1 Incorrect | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D030712.23 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D030712.3 | SGP/EBBR/E9 - Battery Voltage Low | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D030728.4 | SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030729.2 | SGP/EBBR/E9 - AEM Hung in home 30 position. | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D030919.11 | SGP/EBBR/E26 - Soil Storage Incorrect; Surface Fluxes Incorrect | sgp30ebbrE26.b1 |
D030919.7 | SGP/EBBR/E9 - Water in Net Radiometer; Surface Fluxes are Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031031.3 | SGP/EBBR/E9 - Measurements All Zero | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031103.1 | SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031204.21 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031204.8 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031211.3 | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031222.13 | SGP/EBBR/E9 - Net Radiometer Iced Over During Storm | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031222.14 | SGP/EBBR/E9 - Wind Speed Sensor Frozen By Ice Storm | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D031222.24 | SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031222.25 | SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D040304.28 | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D040304.29 | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D040304.8 | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D040304.9 | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D040723.2 | SGP/EBBR/E9 - net radiometer top dome broken, water in bottom dome | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D040813.5 | SGP/EBBR/E26 - Soil Temperature #4 and Soil Heat Flow #4 Incorrect | sgp30ebbrE26.b1 |
D041222.1 | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D041222.10 | SGP/EBBR/E9 - 6 Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D041222.18 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D041222.4 | SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D041222.5 | SGP/EBBR/E26 - Most Measurements Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D050113.2 | SGP/EBBR/E9 - Wind Speed Threshhold Low | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D050206.16 | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D050206.8 | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice Storm | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D050207.12 | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D050207.4 | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice Storm | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D050211.1 | SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D050215.14 | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D050215.15 | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D050324.3 | SGP/EBBR/E26 - Incorrect soil type coefficients used | sgp30ebbrE26.b1 |
D050601.2 | SGP/EBBR/E9 - Soil moisture too high | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D050719.15 | SGP/EBBR/E26 - Improved EBBR CR10 Program | sgp30ebbrE26.b1 |
D050719.8 | SGP/EBBR/E9 - Improved EBBR CR10 Program | sgp30ebbrE9.b1 |
D051104.1 | SGP/EBBR/E9 - Net Radiation Incorrect: Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D051106.22 | SGP/EBBR/E9 - Average Soil Heat Flux Incorrect | sgp30ebbrE9.b1 |
D051106.30 | SGP/EBBR/E26 - Average Soil Heat Flux Incorrect | sgp30ebbrE26.b1 |
D051112.6 | SGP/EBBR/E9 - metadata corrections | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D051112.9 | SGP/EBBR/E26 - metadata corrections | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D051215.2 | SGP/EBBR/E9 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D051222.1 | SGP/EBBR/E26 - Data Suspect During Low Supply Voltage | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D060501.26 | SGP/EBBR/E26 - Measurements Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D060621.7 | SGP/EBBR/E9 - Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D061220.15 | SGP/EBBR/E26 - Wind Direction Dependency of Surface Fluxes and General Data Quality Information | sgp30ebbrE26.b1 |
D061220.5 | SGP/EBBR/E9 - Wind Direction Dependency of Surface Fluxes and General Data Quality Information | sgp30ebbrE9.b1 |
D071001.1 | SGP/EBBR/E26 - Sensible and Latent Heat Fluxes Affected by bad temp sensor | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D080102.2 | SGP/EBBR/E9 - Net Radiation Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D090313.11 | SGP/EBBR/E9 - Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D090313.8 | SGP/EBBR/E26 - Wind Speed Incorrect | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D091015.2 | SGP/EBBR/E26 - Low supply voltage | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D100521.2 | SGP/EBBR/E9 - Sensible and latent heat flux incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D101127.1 | SGP/EBBR/E9 - T/RH Probe Temperature Problem - Sensible and Latent Heat Fluxes Affected | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D110105.4 | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D110830.2 | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE9.b1 |
D931108.6 | SGP/EBBR/E9 - pressure calibration | sgp30ebbrE9.b1 |
D940211.1 | SGP/EBBR/E26 - Invalid data during Preventative Maintenance | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D940301.2 | SGP/EBBR/E26 - Winds, SM2 Invalid data 10/10/93 - 2/2/94 | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D940301.6 | SGP/EBBR/E9 - Invalid wind speed frozen sensor | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D940329.1 | SGP/EBBR/E26 - Wind Direction Sensor Malfunction | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D940329.3 | SGP/E9/EBBR - AEM Malfunction | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D940503.1 | SGP/EBBR/E9 - AEM failure | sgp30ebbrE9.b1 |
D940606.1 | SGP/EBBR/E26 - Wind Speed Malfunction | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D940606.2 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D940711.2 | SGP/EBBR/E9 - Reprocess: Soil Heat Flow Sensor Failure | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D940818.1 | SGP/EBBR/E26 - Soil Moisture Sensor Malfunction | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D940826.1 | SGP/EBBR/E9 - Malfunctioning Wind Dir Sensor, Incorrect SM2 Results | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D940826.2 | SGP/EBBR/E9 - Reprocess: Soil Heat Flux Out of Range | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D940830.7 | SGP/EBBR/E9 - Hail Damage to Net Radiometer and Wind Speed Sensor | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D941021.11 | SGP/EBBR/E26 - Net Radiometer Hemisphere Changes | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D941212.1 | SGP/EBBR/E26 - Wind Direction Sensor Affect on Soil Moisture 2 | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D941221.1 | SGP/EBBR/E26 - T/RH Check | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D950126.2 | SGP/EBBR/E9 - Reprocess: Soil Heat Flow Sensor 5 Incorrect Data | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
D950308.2 | SGP/EBBR/E9 - Radiation Shield Problem | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D950308.3 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D950626.10 | SGP/EBBR/E26 - Stopped Ventilation Fan | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D950626.11 | SGP/EBBR/E9 - Stopped Ventilation Fan | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D950626.12 | SGP/EBBR/E9 - Water in Net Radiometer | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D950626.14 | SGP/EBBR/E26 - Reprocess: Soil Heat Flow Sensor 1 Replacement | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D950626.19 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D950626.5 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D950626.6 | SGP/EBBR/E9 - Frozen Wind Speed Sensor | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D950626.8 | SBP/EBBR/E9 - Reprocess: Soil Heat Flow Sensor 5 Incorrect Data | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D950626.9 | SGP/EBBR/E26 - Frozen Wind Speed Sensor | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D950908.2 | SGP/EBBR/E26 - AEM not exchanging | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D950921.4 | SGP/EBBR/E26 - AEM replacement | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D951016.1 | SGP/EBBR/E26 - Battery Voltage Drop | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D951016.2 | SGP/EBBR/E26 - Net Radiometer Dome Punctured | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D951020.1 | SGP/EBBR/E9 - 3-month Check | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D951113.4 | SGP/EBBR/E26 - Right Tair Offscale | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D951116.3 | SGP/EBBR/E26 - Wind Speed Cups Frozen | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D951116.5 | SGP/EBBR/E9 - AEM Exchange Stopped in Snow and Freezing Rain | sgp30ebbrE9.b1 |
D951127.1 | SGP/EBBR/E9 - Annual calibration changeout | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D960104.2 | SGP/EBBR/E26 - Wind Speed Cups Frozen | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D960104.8 | SGP/EBBR/E26 - Right Tair Offscale | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D960119.3 | SGP/EBBR/E26 - Right tair Offscale | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D960321.1 | SGP/EBBR/E9 - Wind Speed Cups Frozen | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D960409.1 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D960501.4 | SGP/EBBR/E26 - Right Air Temp Malfunction | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D960508.10 | SGP/EBBR/E26 - 3-month check | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D960508.4 | SGP/EBBR/E9 - 3-month check | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D961122.10 | SGP/EBBR/E9 - Air Temperature Thermocouples Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D961122.12 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D961122.13 | SGP/EBBR/E26 - Right Air Temperature Malfunction | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D961122.22 | SGP/EBBR/E9 - EBBR 3 Month Checks - 10 EFs | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D961122.28 | SGP/EBBR/E26 - EBBR 3 Month Checks - 10 EFs | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D961122.4 | SGP/EBBR/E26 - Annual Calibration Changeout | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D961122.5 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D970330.6 | SGP/EBBR/E26 - Wind Direction Sensor Failure | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
D970623.2 | SGP/EBBR/E9 - Temperature Portion of T/RH Probe | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
D970627.2 | SGP/EBBR/E26 - Reprocess: E26 Soil Heat Flow Sensor 1 Replacement | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D971021.3 | SGP/EBBR/E9 - EBBR Biannual Checks | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D971021.9 | SGP/EBBR/E26 - EBBR Biannual Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D971027.8 | SGP/EBBR/E9 - Wind Direction Sensor Malfunction | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D971027.9 | SGP/EBBR/E26 - Bad Dates | sgp30ebbrE26.b1 |
D980117.13 | SGP/EBBR/E9 - EBBR Frozen Wind Speed | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D980117.22 | SGP/EBBR/E26- EBBR Frozen Wind Speed | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D980117.25 | SGP/EBBR/E9 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
D980117.31 | SGP/EBBR/E9 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D980117.33 | SGP/EBBR/E26 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
D980117.5 | SGP/EBBR/E26 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D980410.5 | SGP/EBBR/E9 - Wind Speed Sensor Frozen | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D980416.10 | SGP/EBBR/E9 - 3-Month Check | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
D980416.18 | SGP/EBBR/E26 - 3-Month Check | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D980507.5 | SGP/EBBR/E26 - Character In EBBR E26, 30 Minute Data | sgp30ebbrE26.b1 |
D980529.17 | SGP/EBBR/E26 - Six Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D980529.8 | SGP/EBBR/E9 - Six Month Checks | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
D990127.12 | SGP/EBBR/E9 - Wind Direction Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990127.31 | SGP/EBBR/E26 - Wind Direction Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D990127.42 | SGP/EBBR/E26 - Wind Speed Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D990127.43 | SGP/EBBR - EBBR E26 Wind Speed Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D990127.7 | SGP/EBBR/E26 - Battery Voltage Low, Data Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D990127.8 | SGP/EBBR/E9 - EBBR E9 Net Radiometer Dome Broken, Flux Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990128.6 | SGP/EBBR/E9 - Wind Speed Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990128.7 | SGP/EBBR/E9 - Wind Speed Data Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990129.5 | SGP/EBBR/E26 - Battery Voltage Low | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D990409.6 | SGP/EBBR/E26 - Calibration Changeout | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D990421.2 | SGP/EBBR/E26 - Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgpebbrE26.00, sgp5ebbrE26.00 |
D990622.5 | SGP/EBBR/E9 - Wind Speed Incorrect | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
D990622.6 | SGP/EBBR/E26 - Battery Wire Problem Causes Incorrect Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D990622.7 | SGP/EBBR/E26 - Battery Wire Problem Causes Questionable Data | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
D990623.1 | SGP/EBBR/E9 - Right Aspirator Not Working | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/1999 | 0000 | 06/29/1999 | 2145 |
Subject: | SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The temperature from the left T/RH probe went offscale frequently. This temperature is used in the calculation of the vapor pressure. Therefore, top and bottom Thum measurements, left Thum, top and bottom vapor pressure measurements, vapor pressure gradients, and the resulting latent and sensible heat fluxes and bowen ratio were frequently incorrect for the period stated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/1999 | 0000 | 06/29/1999 | 2145 |
Subject: | SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Left T/RH probe temperature is frequently offscale during the period. Examine the data (compare with the the T/RH right temperature) to determine which times are incorrect. Replacement of the probe on 29 June 1999 solved the problem. Affected data are: 5 minute: tair_bot, tair_top 15 minute: tair_l 30 minute: tair_bot, tair_top, e, h, bowen |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/2000 | 0230 | 01/27/2000 | 1700 |
Subject: | SGP/EBBR/E26 - Right Aspirator Not Working |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The right aspirator fan did not work during the period. The following values were therefore incorrect: 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, e, h, bowen |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1999 | 0800 | 12/18/1999 | 1930 |
Subject: | SGP/EBBR - EBBR E9 Anemometer Frozen, Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The anemometer cups were frozen stalled. The following values were therefore incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/1999 | 0635 | 10/07/1999 | 1620 |
Subject: | SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The anemometer was not working 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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/27/1999 | 0615 | 08/12/1999 | 1600 |
Subject: | SGP/EBBR/26 - Low Battery Condition |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | When battery voltage was less than 10.4 V DC during this period, all data should be considered to be incorrect. The cause of the problem was a broken trace on J-panel #3. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/1999 | 0230 | 09/30/1999 | 1500 |
Subject: | SGP/EBBR - EBBR E9 Net Radiation Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/25/1999 | 0700 | 10/07/1999 | 1700 |
Subject: | SGP/EBBR/E26 - Net Radiation Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1996 | 0000 | 04/01/1999 | 1410 |
Subject: | SGP/EBBR/E26 - Reprocess Soil Moisture Off-Scale |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | During numerous periods within the days listed above, individual soil moisture probes indicate small positive or else negative values when soil moisture is high (greater than 35%). This situation has occured since the present EBBR unit was installed on 17 July 1996. The cause of the problem is inadequate range in the calibration curve equation. Cement soil is somewhat unique amongst the EBBR sites, as the soil is very sandy and porous; it can hold a larger amount of water per volume than the other soils. This high a soil moisture cannot be obtained with the calibration soil used by REBS. Therefore, the soil moisture equations need to be manipulated to allow larger soil moistures to be calculated. Much of the data from January 1998 is corrupted by this problem, making changes in the equations prudent. The soil moisture data must be inspected by the data user to see when soil moisture values for one or more probes is inconsistent with the others. Recalculation of ave_shf, e, and h must be made using only the soil moisture sets with correct soil moisture values. Affected data values are (# for probe number): 15 minute: rr_sm# 30 minute: sm#, c_shf#, cs#, ces#, g#, ave_shf, e, h Sensible, latent, and soil heat fluxes can be recalculated using the soil probe sets that provide correct data. For example, if soil moisture 2 is incorrect, ave_shf = (g1 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), If soil moisture 2 and 4 are incorrect, ave_shf = (g1 + g3 + g5)/3 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), If soil moisture 2, 4, and 5 are incorrect, ave_shf = (g1 + g3)/2 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), etc. On 5 May 1998 at 1815 GMT a calibration coefficient was changed in the CR10 program as a result of a BCR by the mentor. This coefficient has helped reduce the least severe problems but has not eliminated problems from large negative soil moistures measured even once during the integration period. However, now the incorrect average soil heat flow, latent heat flux, and sensible heat flux are so large, negative or positive, that they cannot be mistaken as being correct. The EBBR unit was replaced with a recalibrated system on 1 April 1999. The previous unit experienced soil moisture problems the entire time (almost 3 years) that the system was installed because of the inadequacy of the soil moisture sensor calibrations. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/2000 | 2045 | 05/04/2000 | 1500 |
Subject: | SGP/EBBR/E26 - EBBR E26 Left Aspirator Not Working |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The data is suspect because of inadequate aspiration for the sensors in the left aspirated radiation shield. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2000 | 1330 | 02/22/2000 | 1500 |
Subject: | SGP/EBBR/E26 - EBBR E26 All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | All data was incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2000 | 2300 | 02/23/2000 | 0030 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | All data wqas incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2000 | 1630 | 04/06/2000 | 1700 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Data was incorrect because of Preventative Maintenance activities. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2000 | 1215 | 04/13/2000 | 1415 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Battery voltage below about 10.5 volts DC caused a number of the EBBR sensors to not measure correctly. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2000 | 1745 | 04/13/2000 | 1800 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Battery voltage less than 10.5 volts DC causes some sensors to measure incorrectly. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/14/2000 | 0615 | 04/14/2000 | 1530 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Battery voltage less than 10.5 volts DC causes some sensors to measure incorrectly. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2000 | 0845 | 04/16/2000 | 1500 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Battery voltage less than 10.5 volts DC causes some sensors to make incorrect measurements. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/24/2000 | 0000 | 03/24/2000 | 0030 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | All data was incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/15/2000 | 1030 | 03/15/2000 | 1430 |
Subject: | SGP/EBBR/E26 - All Data Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | All data was incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/26/2000 | 1530 | 04/20/2000 | 1450 |
Subject: | SGP/EBBR/E26 - Left Air Temperature Periodically Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Left air temperature periodically was incorrect, causing the indicated measurements to be incorrect. The user will need to inspect the data to see when the left air temperature was incorrect (compare left with right air temperature or with the humidity probe temperature). |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2000 | 0900 | 04/20/2000 | 1450 |
Subject: | SGP/EBBR/E26 - Reference Temperature Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The reference temperature sensor did not work during the indicated period, causing the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/24/2000 | 0100 | 04/06/2000 | 1730 |
Subject: | SGP/EBBR/E26 - Electronics Problem |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Incorrect home signal indicates an electronic problem that affected the indicated measurements; this may have been a multiplexer #2 problem as all sensors affected are connected to that multiplexer and no sensors on multiplexer #1 were affected. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2000 | 1800 | 06/15/2000 | 1600 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #5 Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Soil Heat Flow #5 was incorrect, causing the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1999 | 0030 | 03/07/2000 | 1455 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #1 was incorrect, causing the indicated measurements to be incorrect. A broken sensor wire was at fault. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2000 | 0600 | 03/07/2000 | 1455 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #2 Large Negative |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Soil Heat Flow #2 was large negative and incorrect for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/25/2000 | 2145 | 02/26/2000 | 1130 |
Subject: | SGP/EBBR/E26 - Left Air Temperature Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Incorrect left air temperature caused the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/25/2000 | 0600 | 12/28/2000 | 1145 |
Subject: | SGP/EBBR/E26 - Wind Speed Iced |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The anemometer was frozen stopped by freezing rain. Indicated data are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2000 | 0000 | 12/11/2000 | 1331 |
Subject: | SGP/EBBR/E9 - E9 EBBR Wind Direction Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The wind direction vane was frozen in one direction by icing during the indicated period. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2000 | 2015 | 12/15/2000 | 1631 |
Subject: | SGP/EBBR/E9 - E9 EBBR Wind Speed Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The wind speed sensor cups were frozen in place by icing. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2000 | 1530 | 02/13/2001 | 1546 |
Subject: | SGP/EBBR/E9 - E9 EBBR Soil Heat Flow 1 Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Soil Heat flow sensor #1 produced measurements that were large negative during the indicated period. This was the result of sensor failure. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/13/2000 | 1600 | 03/13/2000 | 1601 |
Subject: | SGP/EBBR/E9 - E9 EBBR Soil Heat Capacities Incorrect |
DataStreams: | sgp30ebbrE9.b1 |
Description: | Soil Heat Capacities were out-of-range during this period, as reported by the datalogger. The cause of this is unknown. Actual values used in the computations of fluxes were okay, as the fluxes were not affected. |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2000 | 0600 | 03/07/2000 | 0901 |
03/24/2000 | 0100 | 04/06/2000 | 1701 |
06/19/2000 | 0830 | 06/19/2000 | 1431 |
06/19/2000 | 1630 | 06/19/2000 | 1731 |
06/19/2000 | 1900 | 06/19/2000 | 1901 |
06/20/2000 | 1430 | 06/20/2000 | 2201 |
06/30/2000 | 0945 | 06/30/2000 | 1346 |
07/02/2000 | 0930 | 07/02/2000 | 1601 |
07/03/2000 | 1230 | 07/03/2000 | 1316 |
Subject: | SGP EBBR E26 - Data Suspect, Low Battery Voltage |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
Description: | The data measurements are suspect because of low battery voltage. Some measurements may be correct, but most are probably incorrect. Large home signals indicate very low battery voltage is present. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/06/2000 | 2230 | 09/06/2000 | 2231 |
09/10/2000 | 1430 | 09/10/2000 | 1431 |
10/16/2000 | 1500 | 10/16/2000 | 1501 |
10/23/2000 | 1900 | 10/23/2000 | 1901 |
10/26/2000 | 1530 | 10/26/2000 | 1601 |
10/27/2000 | 1430 | 10/27/2000 | 1501 |
01/03/2001 | 1530 | 01/03/2001 | 1631 |
01/02/2001 | 1600 | 01/02/2001 | 2201 |
Subject: | SGP EBBR E26 - All Data Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
Description: | All data was incorrect during these periods for unknown reasons. However, this tends to happen during preventative maintenance visits if sensors have to be changed out or tested and the datalogger program is reloaded, or if the battery voltage is low. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1999 | 1700 | 03/03/2000 | 0931 |
Subject: | SGP EBBR E26 - Soil Heat Flow #1 Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Soil Heat Flow #1 was incorrect because of a bad electronic connection. Average surface heat flow, sensible heat flux, and latent heat flux are incorrect as a result; these can be re-calculated by using the remaining correct soil heat flows. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/18/2000 | 0330 | 02/19/2000 | 1131 |
03/04/2000 | 1500 | 03/07/2000 | 0901 |
Subject: | SGP EBBR E26 - Soil Heat Flow #2 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #2 was incorrect. Average soil heat flow, sensible heat flux, and latent heat flux were therefore also incorrect; these can be re-calculated from the remaining correct soil heat flows. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/05/2000 | 1900 | 11/16/2000 | 1601 |
11/30/2000 | 1600 | 12/03/2000 | 0731 |
12/14/2000 | 1600 | 12/16/2000 | 0301 |
06/15/2000 | 1500 | 06/19/2000 | 2201 |
Subject: | SGP EBBR E26 - Soil Heat Flow #3 Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Soil heat Flow #3 was incorrect (large negative). Therefore average soil heat flow, sensible heat flux, and latent heat flux were also incorrect; these can be re-calculated using the remaining correct soil heat flows. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/2000 | 1730 | 02/08/2001 | 1546 |
Subject: | SGP EBBR E26 - Soil Moisture #1 Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Soil Moisture #1 was a constant 33.7 and was incorrect. Latent and Sensible Heat fluxes were normally minimally affected. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/23/2000 | 0345 | 08/23/2000 | 0401 |
Subject: | SGP EBBR E26 - AEM Inbetween, Data Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | While the AEM was inbetween the correct measurement positions the measurements from the two levels were incorrect. The sensible and latent heat fluxes and Bowen ratio were therefore incorrect also. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2000 | 1530 | 02/22/2001 | 1535 |
Subject: | SGP EBBR E26 - Soil Heat Flow #5 Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Soil Heat Flow #5 was large negative during this period. Therefore, calculated average soil heat flow, latent heat flux, and sensible heat flux were incorrect. These measurements can be recalculated from the use of measurements from only soil heat flow sensors #1-4. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/2000 | 2130 | 10/21/2000 | 2131 |
Subject: | SGP EBBR E26 - Some Data Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The reference temperature sensor malfunctioned, causing all associated measurements to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/10/2000 | 1500 | 09/10/2000 | 1501 |
11/02/2000 | 1600 | 11/02/2000 | 1601 |
01/03/2001 | 1700 | 01/03/2001 | 1701 |
Subject: | SGP EBBR E26 - Some Data Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | Since soil temperature was not available for the previous half hour, soil energy storage could not be calculated properly for the indicated period. The individual soil heat storage from the five soil sets, average soil heat flow, sensible heat flux, and latent heat flux are therefore incorrect. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/22/2001 | 1500 | 05/22/2001 | 1536 |
04/12/2001 | 1800 | 04/12/2001 | 1846 |
10/23/2001 | 1510 | 10/23/2001 | 1701 |
Subject: | SGP EBBR E9 - E9 EBBR Data Incorect During 6 Month Checks |
DataStreams: | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2001 | 1415 | 04/05/2001 | 1546 |
10/16/2001 | 1750 | 10/16/2001 | 1921 |
Subject: | SGP EBBR E26 - Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/14/2000 | 1130 | 03/31/2001 | 2356 |
Subject: | SGP EBBR E26 - Low Battery Voltage |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | During the indicated the period the battery voltage often dropped to 10.4 volts or below. At voltages less than 10.5 volts none of the selected measurements can be considered to be correct. The battery charging capacity was insufficient to maintain voltage at night. If the battery voltage is less than 10.5 volts (see battery voltage in the 15 minute data files), do not use the data. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 08/23/2001 | 1530 |
Subject: | SGP EBBR E26 - Battery Voltage Low |
DataStreams: | sgp30ebbrE26.b1, sgp15ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The battery voltage often dropped below 10.5 volts. All data for voltages below 10.5 volts should be considered to be incorrect. See the 15 minute data files, which contain the battery voltage, to determine when the data was incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/2001 | 0000 | 01/03/2001 | 1901 |
02/22/2001 | 2031 | 02/22/2001 | 2301 |
02/23/2001 | 0545 | 02/25/2001 | 1201 |
02/28/2001 | 2015 | 03/11/2001 | 0831 |
03/20/2001 | 0145 | 03/29/2001 | 1601 |
02/09/2001 | 0615 | 02/11/2001 | 1701 |
01/20/2001 | 0915 | 02/09/2001 | 0001 |
Subject: | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | A worn AEM belt caused the AEM to hang frequently. Gradient measurements, sensible heat flux, latent heat flux, and Bowen ratio are incorrect during the indicated periods. The AEM hung on 2/9/01 because of icing from an ice storm. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/08/2001 | 1315 | 04/09/2001 | 0931 |
04/23/2001 | 1915 | 04/24/2001 | 0031 |
04/10/2001 | 1545 | 04/10/2001 | 1831 |
04/12/2001 | 1745 | 04/12/2001 | 1901 |
04/24/2001 | 1245 | 04/25/2001 | 0131 |
04/25/2001 | 1215 | 04/26/2001 | 0501 |
04/29/2001 | 0000 | 04/29/2001 | 0201 |
04/29/2001 | 0745 | 04/29/2001 | 0801 |
04/29/2001 | 1000 | 05/08/2001 | 1501 |
04/03/2001 | 1945 | 04/03/2001 | 2331 |
Subject: | SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The AEM belt was worn and the AEM hung frequently. Gradients, sensible heat flux, latent heat flux, and Bowen ratio were incorrect during the indicated period. The AEM was replaced during the recalibration changeout on 5/11/01. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/28/2001 | 0530 | 01/29/2001 | 2031 |
02/09/2001 | 0430 | 02/11/2001 | 1531 |
02/14/2001 | 1735 | 02/16/2001 | 1831 |
Subject: | SGP EBBR E9 - E9 EBBR Wind Speed Frozen Stopped |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | An ice storm froze the wind speed sensor to a stop. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/28/2001 | 0800 | 01/29/2001 | 1701 |
02/14/2001 | 1735 | 02/16/2001 | 1831 |
02/09/2001 | 0430 | 02/10/2001 | 1801 |
Subject: | SGP EBBR E9 - E9 EBBR Wind Direction Frozen In One Direction |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | An ice storm froze the wind direction sensor in one postion. Th indicated measurements are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/15/2001 | 2315 | 12/14/2001 | 2356 |
Subject: | SGP/EBBR/E9 - Reprocess: E9 EBBR Soil Temperature #5 Intermittently Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Soil moisture probe #5 in the recalibrated unit installed on 5/11/01 has not been working all of the time. At times the measurement has been very large and incorrect. The indicated measurements are incorrect at those times. The data must be inspected to determine the times that have incorrect data. The sensible and latent heat fluxes can be recalculated by using soil sets 1, 2, 3, and 4 only in a recalculation of the energy budget. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/19/2001 | 1500 | 07/19/2001 | 1631 |
Subject: | SGP EBBR E9 - E9 EBBR Gradients Incorrect During Sensor Replacement |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | During the replacement of the right air temperature probe, all gradient measurements were incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/15/2001 | 0830 | 07/15/2001 | 2216 |
07/16/2001 | 0530 | 07/16/2001 | 1946 |
07/14/2001 | 0230 | 07/14/2001 | 2016 |
07/17/2001 | 1300 | 07/17/2001 | 1316 |
07/18/2001 | 1230 | 07/18/2001 | 1431 |
07/19/2001 | 0715 | 07/19/2001 | 1616 |
Subject: | SGP EBBR E9 - E9 EBBR Right Air Temperature Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The right air temperature probe measurements were incorrect during these periods. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/1994 | 1820 | 11/14/1994 | 2000 |
Subject: | SGP/EBBR/E9 - T/RH Check |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.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: 1820, 1825, 1830, 1835, 1840, 1845, 1850, 1855, 1900, 1905, 1910, 1915, 1920, 1925, 1930, 1935, 1940, 1945 15 minute: 1830, 1845, 1900, 1915, 1930, 1945 30 minute: 1830, 1900, 1930, 2000 (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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/1995 | 1400 | 10/13/1995 | 1700 |
Subject: | SGP/EBBR/E26 - 3-month Check |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1995 | 2100 | 11/25/1995 | 0000 |
Subject: | SGP/EBBR/E9 - Annual calibration changeout |
DataStreams: | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | On November 15, 1995 the changeout for annual calibration occurred at E9, Ashton, KS. The soil moisture sensors were shipped wet from the vendor and did not stabilize until 25 November 1995. The following data should be considered incorrect until 25 November 1995: 15 minute: rr_sm1, rr_sm2, rr_sm3, rr_sm4, rr_sm5 30 minute: h, e, ave_shf, shf1, shf2, shf3, shf4, shf5, sm1, sm2, sm3, sm4, sm5, cs1, cs2, cs3, cs4, cs5, ces1, ces2, ces3, ces4, g1, g2, g3, g4, g5. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2002 | 1600 | 05/09/2002 | 1631 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/02/2002 | 1500 | 05/02/2002 | 1531 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1995 | 2100 | 11/16/1995 | 1700 |
Subject: | SGP/EBBR/E9 - Annual calibration changeout |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | On November 15, 1995 the changeout for annual calibration occurred at E9, Ashton, KS. After installation of the new SEBS unit, RH output was zero. The next day site operations personnel found that the RH probe cable connections were loose. RH returned to normal after the connections were tightened at 1700 GMT on 16 November 1995. During the period of time that the connections were not made, the following data values are incorrect: 5 minute: hum_top, hum_bot, vp_top, vp_bot 15 minute: mv_hum_r, mv_hum_l 30 minute: hum_top, hum_bot, vp_top, vp_bot. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/15/2001 | 0000 | 06/30/2002 | 2356 |
Subject: | SGP/EBBR/E9 - Reprocess: Soil Temperature #5 Incorrect |
DataStreams: | sgp30ebbrE9.b1 |
Description: | Soil temperature # 5 was incorrect most of the time, leading to incorrect surface heat flow, latent heat flux and sensible heat flux. The heat fluxes can be recalculated by using soil sets 1-4 as follows: ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/28/2002 | 1600 | 03/28/2002 | 1601 |
06/04/2002 | 1500 | 06/04/2002 | 1501 |
Subject: | SGP/EBBR/E9 - Measurements All Zeros |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.00, sgp5ebbrE9.b1 |
Description: | The measurements were all zeros at the indicated times. This occurs after a CR10 program restart, which sometimes happens after some servicing of the EBBR is performed. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/30/2002 | 1500 | 05/30/2002 | 1501 |
Subject: | SGP/EBBR/E26 - Measurements Zero |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.b1 |
Description: | The measurements are often zero after a CR10 datalogger restart, as occurred here. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/30/2002 | 1530 | 05/30/2002 | 1531 |
Subject: | SGP/EBBR/E26 - Measurements Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | Change of energy storage (CES) measurements (calculated from the change of soil temperature with time) are sometimes incorrect after a CR10 program restart because the beginning measurement of the averaging period is zero. Average soil heat flow, sensible heat flux, and latent heat flux were affected and cannot be recalculated. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/01/2002 | 2115 | 06/30/2002 | 2356 |
Subject: | SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Multiplexer 2 is failing during times of control box temperatures above 29 degrees C. The failure begins in the last channel and progresses to lower channels as the temperature increases. It has not yet been determined whether the failure is in the relays or a solid state component of the multiplexer. This condition is probably due to the aging of the device and the millions of cycles that this 10 year old device has made. More failures of this sort may occur in the future. A cure is being sought aside from replacement of the multiplexers to prevent the problem. The indicated measurements need to be inspected to determine which ones are usable. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/28/2002 | 1615 | 03/28/2002 | 1801 |
Subject: | SGP/EBBR/E9 - Humidity Probe Measurements Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The temperature and humidity measurements from both T/RH probes were incorrect during changeout of the right probe. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 1015 | 07/16/2002 | 1630 |
Subject: | SGP/EBBR/E9 - Right Humidity Suspect |
DataStreams: | sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The Right Humidity measurement was normally incorrect, although it is often difficult to determine it by looking at the measurement. The measurements float around, sometimes being too large and sometimes being too small, through most of the day, particularly for the hour before sunset through the hour after sunrise. Great care and comparison with surrounding EBBR sites would be needed to be able to use any of the latent and sensible heat flux measurements from E9 for this period. Another DQPR has been issued to fix this problem, which has eluded repair efforts so far. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1996 | 1400 | 07/17/1996 | 1430 |
Subject: | SGP/EBBR/E26 - Annual Calibration Changeout |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | On 16 November 1996 the EBBR changeout for annual calibration occurred at E26, Cement, OK. SEBS unit 2 was removed and unit 8 was installed. Data for half hours 1400 and 1430 GMT on 17 November is incorrect; 3 month calibration checks were being performed. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.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: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. |
Measurements: | sgp30ebbrE2.b1:
sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE7.b1:
sgp30ebbrE18.b1:
sgp30ebbrE12.b1:
sgp30ebbrE4.b1:
sgp30ebbrE15.b1:
sgp30ebbrE19.b1:
sgp30ebbrE20.b1:
sgp30ebbrE8.b1:
|
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: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. (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: | sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE7.b1:
sgp30ebbrE4.b1:
sgp30ebbrE12.b1:
sgp30ebbrE15.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE8.b1:
sgp30ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/27/2002 | 1605 | 11/27/2002 | 1635 |
Subject: | SGP/EBBR/E26 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/19/2002 | 1635 | 11/19/2002 | 1735 |
Subject: | SGP/EBBR/E9 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2002 | 0000 | 07/16/2002 | 1530 |
Subject: | SGP/EBBR/E9 - REPROCESS: Soil Temperature #5 Incorrect |
DataStreams: | sgp30ebbrE9.b1 |
Description: | Soil Temperature #5 was intermittently incorrect. The cause is unknown. The indicated measurements that are calculated using soil temperature are also incorrect. |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/16/2002 | 1500 | 07/16/2002 | 1529 |
Subject: | SGP/EBBR/E9 - REPROCESS: Soil Heat Flow #4 Incorrect |
DataStreams: | sgp30ebbrE9.b1 |
Description: | Soil Heat Flow #4 was incorrect during these periods as a consequence of the repair of Soil Temperature #5. See below for a work-around. |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/24/2002 | 1600 | 09/24/2002 | 1630 |
Subject: | SGP/EBBR/E9 - Net Rad data bad during dome replacement |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The net radiation measurement was incorrect during replacement of the top dome. Measurements calculated using net radiation are also incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/16/2002 | 1330 | 11/16/2002 | 1430 |
11/17/2002 | 0700 | 11/19/2002 | 1730 |
Subject: | SGP/EBBR/E9 - AEM Malfunction |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | When the AEM (Automatic Exchange Mechanism) is hung inbetween a home position, the gradients of temperature and relative humidity, and thus sensible and latent heat fluxes, are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/2002 | 1600 | 07/11/2002 | 1629 |
Subject: | SGP/EBBR/E26 - Measurements zero following logger restart |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most of the measurements were zero, which normally happens after a datalogger restart. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2002 | 0000 | 07/11/2002 | 1300 |
Subject: | SGP/EBBR/E26 - Multiplexer Problem |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | One of the multiplexers exhibited dropouts of the channels, beginning with the last channel at temperatures above about 30 C and moving backward through the channels as the temperature rose. High temperatures affected the switching speed of the multiplexer. This is the first time that this behavior has been documented in a Campbell Scientific multiplexer. The multiplexer had been in continuous field use for 10 years and had experienced probably more switching cycles than what is normally expected of the device in that period. The multiplexer was replaced to solve the problem. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/27/2002 | 0830 | 09/05/2002 | 1700 |
Subject: | SGP/EBBR/E26 - Water in broken Net Radiometer Dome |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The net radiation measurement is incorrect. Measurements calculated using net radiation are also incorrect. No work-around is possible for this situation. |
Measurements: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2002 | 0845 | 11/06/2002 | 0130 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | When Battery Voltage drops below 10.5 volts, most measurements are suspect and some are often incorrect. The user will need to inspect the data carefully to determine the useability of the data. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/04/2002 | 1015 | 01/10/2003 | 1600 |
Subject: | SGP/EBBR/E26 - AEM Hung |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The AEM hung inbetween home positions during the period. The Bowen ratio, gradient measurements, sensible heat flux, and latent heat flux are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2003 | 1900 | 01/10/2003 | 1904 |
Subject: | SGP/EBBR/E26 - Data zeros following logger restart |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most measurements were zero after restart of the CR10 datalogger, after a calibration changeout of the EBBR unit. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/2003 | 1725 | 01/23/2003 | 1715 |
Subject: | SGP/EBBR/E26 - Left Air Temperature Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The left air temperature was incorrect during the period. Poor electronic connections may have caused this. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/19/2003 | 1900 | 05/16/2003 | 1500 |
Subject: | SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #1 was incorrect much of the time. The sensor was replaced. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/24/2003 | 1635 | 03/06/2003 | 1520 |
Subject: | SGP/EBBR/E26 -Right Air Temperature Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | One of the Right Air Temperature connections was loose, producing incorrect data. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/23/2003 | 2000 | 03/13/2003 | 1745 |
Subject: | SGP/EBBR/E9 - AEM Hung Inbetween Home Positions |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The AEM was hung inbetween home positions, causing many measurements to be incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/24/2003 | 1800 | 04/24/2003 | 1830 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2003 | 1800 | 05/09/2003 | 1800 |
Subject: | SGP/EBBR/E9 - Soil Heat Flow #1 Incorrect |
DataStreams: | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Soil Heat Flow #1 was incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/17/2003 | 1445 | 04/17/2003 | 1535 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/2003 | 1100 | 05/30/2003 | 1700 |
Subject: | SGP/EBBR/E9 - Battery Voltage Low |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many of the measurements are incorrect much of the time during this period, when the battery voltage was 10.9 volts or less. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2003 | 0230 | 06/12/2003 | 0300 |
06/13/2003 | 1200 | 06/13/2003 | 1230 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #5 was large positive for these two periods, for an unknown reason. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/2003 | 1230 | 08/12/2003 | 1615 |
Subject: | SGP/EBBR/E9 - AEM Hung in home 30 position. |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | The AEM was hung in the home 30 position. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/21/2003 | 1600 | 08/21/2003 | 1600 |
Subject: | SGP/EBBR/E26 - Soil Storage Incorrect; Surface Fluxes Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | The half hour after restart of the CR10 datalogger, the soil temperatures for the beginning of the period are missing. Therefore the soil energy storage and surface flux values are also incorrect. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/02/2003 | 0600 | 08/04/2003 | 1800 |
Subject: | SGP/EBBR/E9 - Water in Net Radiometer; Surface Fluxes are Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/23/2003 | 1600 | 09/23/2003 | 1600 |
Subject: | SGP/EBBR/E9 - Measurements All Zero |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Data values were all zero after restarting the CR10 datalogger. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2003 | 1545 | 11/13/2003 | 1545 |
Subject: | SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | During a preventative maintenance visit to perform the 6-month calibrations, the home15 and home30 outputs began reading the same as one another. A fuse replacement and lubrication of the AEM sprockets on 11/13 corrected the problem. During the interval specified, the home15, home30, and sensible and latent heat fluxes are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2003 | 1535 | 10/30/2003 | 1615 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/2003 | 1730 | 11/04/2003 | 1800 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 09/29/2004 | 1845 |
Subject: | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | In a trip to E26, I found that a bad spark gap through which the barometer was powered was causing pressure measurements to be incorrect. The pressure readings oscillated with the voltage of the EBBR battery. During daytime the voltage and thus the pressure would increase and vice versa during dark hours. Apparently only the positive side of the power supply was properly connected through the spark gap and thus the voltage received by the pressure sensor was lower than required to power it properly. Under this condition the perssure measurement varies with voltage level. The pressure measurements therefore had a diurnal signature and usually were incorrect. The decreased pressure during most times would cause latent heat flux to be slightly overestimated and sensible heat flux to be slightly underestimated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/2003 | 0100 | 12/14/2003 | 1930 |
Subject: | SGP/EBBR/E9 - Net Radiometer Iced Over During Storm |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2003 | 2020 | 12/10/2003 | 0645 |
Subject: | SGP/EBBR/E9 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2003 | 1935 | 12/14/2003 | 1615 |
Subject: | SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2003 | 2140 | 12/14/2003 | 1530 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0200 | 02/02/2004 | 1620 |
Subject: | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0410 | 02/02/2004 | 1530 |
Subject: | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2004 | 1745 | 01/27/2004 | 1800 |
01/27/2004 | 1935 | 01/28/2004 | 0140 |
01/28/2004 | 0330 | 01/28/2004 | 0355 |
01/31/2004 | 1800 | 02/12/2004 | 1640 |
Subject: | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | An ice storm froze the wind speed sensor to a stopped condition. The bearings in the sensor appear to be worn, contributing to the problem. The wind speed and residual wind speed measurements are incorrect. This sensor failure does not affect the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0000 | 02/03/2004 | 1740 |
02/05/2004 | 1120 | 02/05/2004 | 1405 |
02/09/2004 | 0945 | 02/09/2004 | 1430 |
Subject: | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/28/2004 | 1200 | 06/29/2004 | 1530 |
Subject: | SGP/EBBR/E9 - net radiometer top dome broken, water in bottom dome |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The Net radiometer top dome was broken. Site Ops did not indicate that there was water in the bottom dome, but the data suggests it. Net radiation values during the period are incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/30/2004 | 1600 | 08/05/2004 | 1530 |
Subject: | SGP/EBBR/E26 - Soil Temperature #4 and Soil Heat Flow #4 Incorrect |
DataStreams: | sgp30ebbrE26.b1 |
Description: | The soil temperature and soil heat flow probes for set #4 was pulled partially out of the ground. This caused soil temperature #4 to be too high and soil heat flow #4 to be too low. The error is not so great as to cause a large error in the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/21/2003 | 1530 | 10/12/2003 | 2355 |
Subject: | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | In a trip to E26, I found that a bad spark gap through which the barometer was powered was causing pressure measurements to be incorrect. The pressure readings oscillated with the voltage of the EBBR battery. During daytime the voltage and thus the pressure would increase and vice versa during dark hours. Apparently only the positive side of the power supply was properly connected through the spark gap and thus the voltage received by the pressure sensor was lower than required to power it properly. Under this condition the perssure measurement varies with voltage level. The pressure measurements therefore had a diurnal signature and usually were incorrect. The decreased pressure during most times would cause latent heat flux to be slightly overestimated and sensible heat flux to be slightly underestimated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2004 | 1630 | 10/05/2004 | 1700 |
Subject: | SGP/EBBR/E9 - 6 Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/2004 | 1530 | 09/30/2004 | 1600 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/27/2004 | 1930 | 11/05/2004 | 0100 |
11/10/2004 | 0600 | 11/24/2004 | 1500 |
Subject: | SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | During low battery voltage conditions (< 10.5 V especially) many measurements are incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/29/2004 | 1100 | 10/29/2004 | 1600 |
Subject: | SGP/EBBR/E26 - Most Measurements Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most of the measurements became either too large or too small. The cause is not known. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2004 | 0830 | 01/31/2005 | 1400 |
Subject: | SGP/EBBR/E9 - Wind Speed Threshhold Low |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | When the wind speed is very low, the anemometer cups stop turning. Wind speeds above the threshhold may be underestimated. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0745 | 01/07/2005 | 1530 |
Subject: | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2005 | 1505 | 01/05/2005 | 0800 |
Subject: | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 1020 | 01/06/2005 | 1730 |
Subject: | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2005 | 1755 | 01/05/2005 | 0800 |
Subject: | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/10/2004 | 1400 | 02/17/2005 | 1630 |
Subject: | SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The E26 EBBR pressure sensor experienced the poor internal voltage regulation problem experienced at other sites last year. Aging of the internal voltage regulator caused the pressure output to drop by 1-2 kPa (0.1-0.5 kPa is normal) when the Sun rose and the solar panel goosed the battery voltage up. The sensible and latent heat fluxes were not significantly affected. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2005 | 2300 | 01/11/2005 | 1645 |
Subject: | SGP/EBBR/E9 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/08/2005 | 0530 | 02/09/2005 | 1830 |
Subject: | SGP/EBBR/E9 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2003 | 1700 | 03/03/2005 | 1600 |
Subject: | SGP/EBBR/E26 - Incorrect soil type coefficients used |
DataStreams: | sgp30ebbrE26.b1 |
Description: | The soil type coefficents for soil moisture were incorrect from the day of the system installation on, making soil moisture values too large. As a result, soil heat flows were overmeasured, and sensible and latent heat fluxes were underestimated. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/02/2005 | 1215 | 06/11/2005 | 0600 |
Subject: | SGP/EBBR/E9 - Soil moisture too high |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The 15 and 30 minute data for sm3 indicated that there was a problem with the sensor that kept the soil moisture artificially high. This corrected itself on 6/11, but it is not clear why. A new sensor was installed on 6/17 and it has behaved well since then. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/31/2005 | 1700 |
Subject: | SGP/EBBR/E26 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE26.b1 |
Description: | Effective 20050331.1700, the EBBR.E26 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 sgp30ebbrE26.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE26.a1). ~ |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/22/2005 | 1600 |
Subject: | SGP/EBBR/E9 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE9.b1 |
Description: | Effective 20050322.1600, the EBBR.E9 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 20050322, 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 sgp30ebbrE9.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE9.a1). |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2005 | 0900 | 11/01/2005 | 1630 |
Subject: | SGP/EBBR/E9 - Net Radiation Incorrect: Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Water had entered the top of the net radiometer during the rain on 10/31 early morning. The net radiation, and thus sensible and latent heat fluxes were incorreect during the stated period. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/2005 | 1630 | 03/22/2005 | 1600 |
Subject: | SGP/EBBR/E9 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE9.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: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2005 | 1800 | 03/31/2005 | 1700 |
Subject: | SGP/EBBR/E26 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE26.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: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 04/19/2005 | 2359 |
Subject: | SGP/EBBR/E9 - metadata corrections |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On 20050420, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E9 data collected by ARM back to the installation of the instrument in December 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 moisture units (from "by volume" to "gravimetric") |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E26 - metadata corrections |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E26 data collected by ARM back to the installation of the instrument in June 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 moisture units (from "by volume" to "gravimetric") |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2005 | 0700 | 11/01/2005 | 1615 |
Subject: | SGP/EBBR/E9 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/20/2005 | 0800 | 12/22/2005 | 1500 |
Subject: | SGP/EBBR/E26 - Data Suspect During Low Supply Voltage |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Low battery supply voltage resulted in high home signals and questionable data at times. Data for battery voltage <10.5 volts should be considered to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/2006 | 0400 | 02/25/2006 | 1700 |
Subject: | SGP/EBBR/E26 - Measurements Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Most measurements were incorrect during low battery voltage conditions. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/2006 | 2230 | 05/02/2006 | 1550 |
Subject: | SGP/EBBR/E9 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The wind speed measurement was incorrect after the cup anemometer lost a cup. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/05/1993 | 0000 | 10/12/2003 | 2330 |
Subject: | SGP/EBBR/E26 - Wind Direction Dependency of Surface Fluxes and General Data Quality |
DataStreams: | sgp30ebbrE26.b1 |
Description: | Beginning in FY2006, Data Quality Reports are not written for missing data or for situations when qc flags clearly show that the data is incorrect (this is true for most of the conditions listed below). DQRs are written for periods when data is incorrect, when the situation is not represented by qc flags in the data, and it's not obvious that the data should have been flagged as incorrect. The EBBR data is only useful for particular wind directions at each Extended Facility. Please use the following resources to help in interpreting the EBBR data. 1) qc flags in the EBBR data. 2) Instrument Mentor Monthly Summaries (IMMS) at http://www.db.arm.gov/IMMS/ 3) SGP EF Surface Conditions Observations (EFSCO) at http://198.124.96.210:591/sfc_cond1/default.htm 4) Surface fluxes are valid only for the following wind directions (in degrees): 0-33, 243-360 Note that there are wind directions at most sites for which the fetch is insufficient and therefore EBBR data is invalid. Appropriate fetch was determined from a 1/40 measurement height to fetch ratio, resulting in a required minimum fetch of 120 m. Particular attention should be paid to the limited valid wind directions for the Central Facility EBBR. The surface vegetation type for the EBBRs is grazed or ungrazed grassland (refer to the EFSCO for state). 5) Some conditions that commonly cause the EBBR primary measurements to be incorrect or missing follow: a) Sensible and latent heat fluxes are not accurate during times when the Automatic Exchange Mechanism (AEM) is not functioning properly. The AEM switches the gradient measuring instrumentation between the top and bottom positions every 15 minutes; this reduces the effects of instrument offsets. Sometimes the AEM does not reach it's full extent of travel, resulting in the home signal being zero. b) Sensible and latent heat fluxes are sometimes incorrect when surface soil heat flow is out of range, as seen in the average soil heat flux (ave_shf). c) Very light winds may be seen at nights for brief periods. Wind direction flops around a lot during low wind conditions (< 1.5 m/s) and is often unreliable during those periods. d) Missing data periods occur at times; this is usually a site data system collection/communication problem; it can also occur during replacement of the system with a newly calibrated unit. Missing data is sometimes filled in later from manual or automatic re-collection of the data. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/1993 | 1500 | 10/12/2003 | 2330 |
Subject: | SGP/EBBR/E9 - Wind Direction Dependency of Surface Fluxes and General Data Quality |
DataStreams: | sgp30ebbrE9.b1 |
Description: | Beginning in FY2006, Data Quality Reports are not written for missing data or for situations when qc flags clearly show that the data is incorrect (this is true for most of the conditions listed below). DQRs are written for periods when data is incorrect, when the situation is not represented by qc flags in the data, and it's not obvious that the data should have been flagged as incorrect. The EBBR data is only useful for particular wind directions at each Extended Facility. Please use the following resources to help in interpreting the EBBR data. 1) qc flags in the EBBR data. 2) Instrument Mentor Monthly Summaries (IMMS) at http://www.db.arm.gov/IMMS/ 3) SGP EF Surface Conditions Observations (EFSCO) at http://198.124.96.210:591/sfc_cond1/default.htm 4) Surface fluxes are valid only for the following wind directions (in degrees): 0-360 Note that there are wind directions at most sites for which the fetch is insufficient and therefore EBBR data is invalid. Appropriate fetch was determined from a 1/40 measurement height to fetch ratio, resulting in a required minimum fetch of 120 m. Particular attention should be paid to the limited valid wind directions for the Central Facility EBBR. The surface vegetation type for the EBBRs is grazed or ungrazed grassland (refer to the EFSCO for state). 5) Some conditions that commonly cause the EBBR primary measurements to be incorrect or missing follow: a) Sensible and latent heat fluxes are not accurate during times when the Automatic Exchange Mechanism (AEM) is not functioning properly. The AEM switches the gradient measuring instrumentation between the top and bottom positions every 15 minutes; this reduces the effects of instrument offsets. Sometimes the AEM does not reach it's full extent of travel, resulting in the home signal being zero. b) Sensible and latent heat fluxes are sometimes incorrect when surface soil heat flow is out of range, as seen in the average soil heat flux (ave_shf). c) Very light winds may be seen at nights for brief periods. Wind direction flops around a lot during low wind conditions (< 1.5 m/s) and is often unreliable during those periods. d) Missing data periods occur at times; this is usually a site data system collection/communication problem; it can also occur during replacement of the system with a newly calibrated unit. Missing data is sometimes filled in later from manual or automatic re-collection of the data. |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/2007 | 0140 | 10/11/2007 | 1730 |
Subject: | SGP/EBBR/E26 - Sensible and Latent Heat Fluxes Affected by bad temp sensor |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The left Thum (temperature of the humidity sensor chamber) measurement was incorrect at times, affecting several measurements, including the sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/22/2007 | 1500 | 01/08/2008 | 1800 |
Subject: | SGP/EBBR/E9 - Net Radiation Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | There was water in the net radiometer. The net radiation data was incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 0350 | 01/28/2009 | 1910 |
Subject: | SGP/EBBR/E9 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The wind speed sensor was frozen stopped by freezing rain. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/26/2009 | 1805 | 01/28/2009 | 1955 |
Subject: | SGP/EBBR/E26 - Wind Speed Incorrect |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The wind speed sensor was frozen stopped by freezing rain. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2009 | 0230 | 10/17/2009 | 1530 |
Subject: | SGP/EBBR/E26 - Low supply voltage |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Low supply voltage during much of the period resulted in missing or incorrect data most of the time. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/20/2010 | 1730 | 05/10/2010 | 1800 |
Subject: | SGP/EBBR/E9 - Sensible and latent heat flux incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | Sensible and latent heat fluxes were sometimes incorrect when soil temperature 4 and soil moisture 4 were acting up. Sometimes the sensible and latent heat fluxes are indicated as incorrect by an offscale reading produced by the data logger error checking routine. This occurs mostly during daytime. However, you will have to examine the soil moisture 4 and soil temperature 4 data to see when they were incorrect or offscale to determine all times for which sensible and latent heat fluxes were incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/2010 | 1630 | 10/06/2010 | 2130 |
Subject: | SGP/EBBR/E9 - T/RH Probe Temperature Problem - Sensible and Latent Heat Fluxes Affected |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | During mid-day the left T/RH probe temperature was offscale, sometimes resulting in incorrect sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2010 | 0800 | 12/07/2010 | 1600 |
Subject: | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp5ebbrE9.b1, sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The right Air Temperature probe leads were loose. During nighttime the right Air Temperature went offscale, resulting in incorrect sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/09/2011 | 0500 | 09/29/2011 | 1600 |
Subject: | SGP/EBBR/E9 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE9.b1 |
Description: | The AEM stuck in the home 15 or home 30 position, resulting in incorrect sensible and latent heat fluxes. |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/1993 | 0300 | 11/01/1993 | 1700 |
Subject: | SGP/EBBR/E9 - pressure calibration |
DataStreams: | sgp30ebbrE9.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: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/1993 | 1645 | 12/28/1993 | 1900 |
Subject: | SGP/EBBR/E26 - Invalid data during Preventative Maintenance |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | During a preventative maintenance visit the +12V DC supply to the wind direction sensor at E26, Cement, Ok was temporarily disconnected, resulting in invalid wind direction data for December 28, 1993 from 1645 through 1900 GMT. The following fields are therefore invalid for that period: 30 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 5 minute: wind_d, sigma_wd, res_ws. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 0000 | 02/02/1994 | 2359 |
Subject: | SGP/EBBR/E26 - Winds, SM2 Invalid data 10/10/93 - 2/2/94 |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Beginning October 10, 1993 the EBBR system at E26, Cement, OK began to have problems with outputs from soil moisture sensor number 2 and the wind direction sensor. This situation also occured in early 1993 and was eliminated by replacing the soil moisture sensor (after replacing the wind direction sensor did not help). This time, replacing the soil moisture sensor did not help, but the problem has not re-occured since the wind direction sensor was replaced on February 2, 1994. During periods of bad data the wind direction output is a constant 135 degrees and soil moisture two is offscale. Invalid data for a constant wind direction of 135 degrees is: 30 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 5 minute: res_ws, wind_d, sigma_wd. Invalid data for soil moisture 2 offscale is: 30 minute: sm2, c_shf2, cs2, ces2, g2, ave_shf, h, e 15 minute: r_sm2 5 minute: no data affected. Apparent cause of data loss, if known: Apparently an electronic problem in interfacing an intermittently malfunctioning wind direction sensor to the data acquisition system multiplexer, thereby affecting the other sensor (soil moisture 2) on that multiplexer pair. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/23/1994 | 0400 | 02/24/1994 | 1300 |
Subject: | SGP/EBBR/E9 - Invalid wind speed frozen sensor |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On February 23, 1994 the EBBR wind speed sensor at E9, Ashton, KS was frozen to a stationary condition by ice. It broke free in strong winds on February 24, 1994. Invalid data for the time period indicated is: 30 minute: wind_s, res_ws 15 minute: wind_s 5 minute: wind_s, res_ws. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1994 | 1400 | 03/16/1994 | 1700 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Malfunction |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The wind direction sensor malfunctioned, outputting nearly a constant value, invalidating the following data values. 30 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 5 minute: wind_d, sigma_wd, res_ws The first good data after the affected period was the 1700 GMT, 30 minute data on March 16, 1994. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/1993 | 1501 | 03/22/1994 | 1643 |
Subject: | SGP/E9/EBBR - AEM Malfunction |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | EDITOR'S NOTE: This DQR refers, in part, to data collected prior to the begin date of regular ARM data. During the first month covered by this DQR, the EBBR.E9 data were not archived with standard ARM names. The data are therefore not readily available, but can be made available by special request. The total period covered by the problem documented here is 930615.0000-940322.1643. The AEM at E9 frequently did not function properly during the time period stated. Please see the notes in the EBBR platform describing home signal conditions for which certain of the data fields are suspect. The newly installed AEM is performing properly so far. The files could be flagged, but it is up to the user to read the platform notes concerning the condition of the home signal and then view the quality of the data accordingly. I would be at my terminal full- time in attempting to list all days and times and data fields that are affected by the numerous AEM malfunctions. Furthermore, I have done so previously in several PIFs that I will reference here for information: P931101.4, P931115.2, P940105.2, P940211.3 |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/1994 | 1500 | 04/19/1994 | 1525 |
Subject: | SGP/EBBR/E9 - AEM failure |
DataStreams: | sgp30ebbrE9.b1 |
Description: | The Automatic Exchange Mechanism would not function. It was decided to take the unit back to SGP CART to try to repair it. A spare AEM was not available for a replacement, so the aspirated radiation shields housing temperature and humidity gradient sensors were attached to the EBBR framework, one meter apart vertically, with the right side in the lower position. The housings remained this way for two weeks. During this time period, home signal, sensible heat flux, and latent heat flux values are incorrect. Significant reprocessing would be required to obtain correct fluxes, and that would be possible only if one assumed that offsets in the sensor calibrations are negligible; that is a very debatable assumption considering that the EBBR system is already half a year past due for calibration. |
Measurements: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/22/1994 | 2200 | 05/25/1994 | 1645 |
Subject: | SGP/EBBR/E26 - Wind Speed Malfunction |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | For an unknown reason, the wind speed sensor at Cement began to record very low wind speeds on a consistent basis, with most of the speeds recorded reflecting what appeared to be zero wind speed (calibration offset). When the sensor was replaced on 5/25/94, it was damaged, although this damage apparently did not occur until a thunderstorm around midnight (local time) May 24. The wind direction sensor was also damaged by the storm at the same time. At any rate, the wind speed data during the period listed should be considered questionable. The wind speed sensor was replaced on May 25, 1994 at 1639. Old sensor S/N K1032, New sensor S/N K1035. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/1994 | 0430 | 05/25/1994 | 1640 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Apparently, a fairly severe thunderstorm passed over the Cement, OK EBBR early on May 25, 1994 (around midnight May 24, local time). The storm damaged the wind direction sensor and the wind speed sensor. Wind Direction and Sigma of Wind Direction data for the period listed should be considered incorrect. The sensors were replaced on May 25, 1994 at 1631. Old sensor S/N K3038, New sensor S/N K3040. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/17/1994 | 1900 | 06/17/1994 | 1930 |
06/18/1994 | 0200 | 06/25/1994 | 1930 |
06/25/1994 | 2300 | 06/28/1994 | 1600 |
06/15/1994 | 2100 | 06/15/1994 | 2130 |
06/15/1994 | 2300 | 06/16/1994 | 0030 |
06/16/1994 | 2130 | 06/17/1994 | 1530 |
Subject: | SGP/EBBR/E9 - Reprocess: Soil Heat Flow Sensor Failure |
DataStreams: | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Failure of soil heat flow sensor #5 at E9, Ashton, KS resulted in incorrect data values for 6 fields for much of the period of time listed above. The soil heat flow values from #5 were so large (in the absolute) that it deleteriosly affected the soil heat flux average and the sensible and latent heat fluxes. The fields affected were: 30 minute: shf5, c_shf5, g5, ave_shf, e, h 15 minute: mv_hft5. I list only the 30 minute times affected below; it can be assumed that the 15 minute value contained in the half hour are incorrect. Sensor #5 was replaced at 1545 GMT on June 28. Old S/N 923029, new S/N 923092. Half hour 1600 GMT is missing due to having to reload the CR10 program with a new shf5 calibration. Sensible and latent heat fluxes can be recomputed by averaging soil heat flow sensors 1-4; use the following equations: ave_shf = (g1 + g2 + g3 + g4)/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. Affected half hours: Date Times (GMT) 6/15 2130, 2300, 2330 6/16 0000, 0030, 2130-2330 6/17 0000-1530, 1900, 1930 6/18 0200-2330 6/19 All 6/20 All 6/21 All 6/22 All 6/23 All 6/24 All 6/25 0000-1930, 2300, 2330 6/26 All 6/27 All 6/28 0000-1600 |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/31/1994 | 2100 | 08/17/1994 | 1700 |
Subject: | SGP/EBBR/E26 - Soil Moisture Sensor Malfunction |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Soil moisture sensor #1 at Cement, Ok, E26 began a slow drift downwards on July 31, 1994. This continued until the sensor was replaced at 1700 GMT on August 17, 1994. The downwards drift occured coincident with a constant decrease in soil moisture at the site. As a result, the average soil moisture (for the set of five sensors) was reduced by only about 2% (for a range of 10 to 22%), and thus had a negligible effect on the calculations of sensible and latent heat flux. The sm1 output dropped below zero at times during August 14-17. Soil Moisture #1 Data Fields: 15 minute: r_sm1 30 minute: sm1 |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/19/1994 | 0100 | 08/23/1994 | 1530 |
Subject: | SGP/EBBR/E9 - Malfunctioning Wind Dir Sensor, Incorrect SM2 Results |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | It has been reported previously that a malfunction of the wind direction sensor resulting in zero or 135 degree outputs can cause the soil moisture #2 sensor to read offscale. The two sensors are attached to a multiplexer pair. The manufacturer of the multiplexer and data acquisition system have not been able to explain how our instrument configuration can cause this effect. Shortly after 0030 GMT on August 20, 1994 significant rainfall occurred, being reflected in more than a doubling of soil moisture within an hour. During the time period listed above, the wind direction sensor mulfunctioned (apparently caused by water in the wind direction sensor electronics), causing the following data fields to be incorrect: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_dir 30 minute: res_ws, wind_d, sigma_wd. During part of the listed period, Soil Moisture #2 was also incorrect, being offscale; during those times the following 30 minute data is also incorrect: 30 minute: sm2, c_shf2, ave_shf, cs2, ces2, g2, h, e. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/17/1994 | 1700 | 08/17/1994 | 2300 |
Subject: | SGP/EBBR/E9 - Reprocess: Soil Heat Flux Out of Range |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | For an unknown reason, soil heat flux sensor #5 indicated too small a value for the period listed above. This resulted in an incorrect average of soil heat flow for the five sets of soil heat flow plates, and therefore incorrect e (latent heat flux) and h (sensible heat flux) in the 30 minute data. The following data values are incorrect: 15 minute: mv_hft5 30 minute: shf5, c_shf5, ave_shf, g5, e, h The latent and sensible heat flux can be recalculated by using only soil heat flows 1 through 4 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q). |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/1994 | 0130 | 08/23/1994 | 1600 |
Subject: | SGP/EBBR/E9 - Hail Damage to Net Radiometer and Wind Speed Sensor |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Golf ball size hail was reported for the Ashton site for early August 20, 1994. It damaged the wind speed sensor and the net radiometer shortly before 0130 GMT. The following data fields are to be flagged as incorrect for the periods listed above (resultant wind speed has already been indicated as incorrect in a previous DQR that documented the malfunction of the wind direction sensor): 5 minute: wind_s, res_ws, q 15 minute: wind_s, mv_q 30 minute: wind_s, res_ws, q, h, e. Note that h and e are also incorrect as a consequence of q being incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/14/1994 | 1600 | 09/28/1994 | 1515 |
Subject: | SGP/EBBR/E26 - Net Radiometer Hemisphere Changes |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/1994 | 0430 | 12/07/1994 | 0800 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Affect on Soil Moisture 2 |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | I have written a number of previous PIFs and DQRs about this same problem previously. This occurred most recently at E9, Ashton, KS in August 1994. The wind direction sensor is on the same data acquisition system multiplexer pair as soil moisture sensor 2. Sometimes a malfunctioning wind direction sensor (resulting in a constant wind direction of 135 degrees) will cause the soil moisture 2 measurement to be offscale. Between 0430 and 0800 GMT the wind direction sensor did not function properly at E22, Cordell, KS. As has often been the case, soil moisture measurements were affected for a shorter time period, from 0500 through 0730 GMT. The cause of this problem is unknown and only occurs on the multiplexer pair to which the wind direction sensor is connected, not on any other pair to which a soil moisture sensor is attached. None of the manufacturers of the applicable equipment can explain the problem. As done before, I will monitor the data for further occurrences of this condition; if the frequency of occurrence increases, further action will be taken. The following data and times are incorrect: Winds: 0430-0800 GMT 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws Soil Moisture 2: 0500-0730 GMT 15 minute: r_sm2 30 minute: sm2, c_shf2, cs2, ces2, g2, ave_shf, h, e |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/1994 | 1615 | 11/09/1994 | 1800 |
Subject: | SGP/EBBR/E26 - T/RH Check |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: 1615, 1620, 1625, 1630, 1635, 1640, 1645, 1650, 1655, 1700, 1705, 1710, 1715, 1720, 1725, 1730, 1735 15 minute: 1615, 1630, 1645, 1700, 1715, 1730, 1745 30 minute: 1630, 1700, 1730, 1800 (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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/19/1994 | 1700 | 08/19/1994 | 2300 |
10/13/1994 | 1800 | 10/14/1994 | 1500 |
10/17/1994 | 2030 | 10/17/1994 | 2100 |
10/28/1994 | 2030 | 10/28/1994 | 2230 |
12/26/1994 | 1700 | 12/27/1994 | 0130 |
12/27/1994 | 1600 | 12/27/1994 | 1630 |
01/02/1995 | 0600 | 01/05/1995 | 1700 |
01/05/1995 | 2200 | 01/09/1995 | 0230 |
01/14/1995 | 0800 | 01/15/1995 | 0300 |
01/15/1995 | 1200 | 01/16/1995 | 1600 |
12/20/1994 | 0630 | 12/23/1994 | 0530 |
01/09/1995 | 0900 | 01/14/1995 | 0400 |
Subject: | SGP/EBBR/E9 - Reprocess: Soil Heat Flow Sensor 5 Incorrect Data |
DataStreams: | sgp30ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Soil heat flow sensor #5 periodically outputted incorrect values from mid-August 1994 until mid-January 1995. The output often indicated large negative heat flow. The sensor was replaced on January 23, 1995, even though the previous week of data was correct. The data affected (and thus incorrect) includes: 15 minute: mv_hft5 30 minute: shf5, c_shf5, g5, ave_shf, e, h. The dates and times (GMT) of incorrect values are listed below. Only half hour times are listed. 08/19/94 1700-2300 10/13/94 1800-2330 10/14/94 0000-1500 10/17/94 2030-2100 10/28/94 2030-2230 12/20/94 0630-2330 12/21/94 0000-2330 12/22/94 0000-2330 12/23/94 0000-0530 12/26/94 1700-2330 12/27/94 0000-0130, 1630 01/02/95 0600-2330 01/03/95 0000-2330 01/04/95 0000-2330 01/05/95 0000-1700, 2200-2330 01/06/95 0000-2330 01/07/95 0000-2330 01/08/95 0000-2330 01/09/95 0000-0230, 0900-2330 01/10/95 0000-2330 01/11/95 0000-2330 01/12/95 0000-2330 01/13/95 0000-2330 01/14/95 0000-0400, 0800-2330 01/15/95 0000-0300, 1200-2330 01/16/95 0000-1600 The latent and sensible heat fluxes can be recalculated by using only soil heat flows 1 through 4 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/1995 | 0030 | 02/21/1995 | 1600 |
Subject: | SGP/EBBR/E9 - Radiation Shield Problem |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The left radiation shield was off during the period of time above. Close inspection of the 15 minute data was required to detect when the shield fell off. As is often the case in such a situation, the 30 minute data does not adequately indicate such a failure. A radiation shield has fallen off of an EBBR before, apparently a result of vibration of the AEM during exchanges. All air and humidity probe temperatures (except the reference temperature), relative humidities, vapor pressures, Bowen ratio, sensible heat flux, and latent heat flux during this period are considered to be incorrect. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/16/1995 | 1500 | 02/17/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On February 16, 1994 a frontal system deposited freezing rain in central Oklahoma that resulted in the EBBR wind speed instrument becoming frozen in place at Cement (E26) for part of two days. All 5, 15, and 30 minute data values indicated below are incorrect for all times within the period indicated. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/1995 | 1230 | 04/12/1995 | 0615 |
04/12/1995 | 1315 | 04/12/1995 | 1400 |
Subject: | SGP/EBBR/E26 - Stopped Ventilation Fan |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On April 11, 1995, a site operator discovered the right aspirator ventilation fan of the EBBR to be stopped. Inspection of the data indicates that this condition occurred during the two periods shown above; the fan apparently worked briefly inbetween the periods. Lack of ventilation of the temperature and relative humidity sensors attached to the AEM results in incorrect measurements of air temperature and relative humidity by the right aspirator probes, and therefore all quantities calculated from them, including sensible and latent heat fluxes, are incorrect as well. The quantities that are incorrect for the periods 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, 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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/1995 | 0130 | 04/18/1995 | 1620 |
Subject: | SGP/EBBR/E9 - Stopped Ventilation Fan |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | On April 18, 1995, a site operator discovered the right aspirator ventilation fan of the EBBR to be stopped. Inspection of the data indicates that this condition began early in the GMT day. Interpretation of the start time of the condition is made more difficult by a slight bias low in absolute temperature in comparison to the left temperature probe. Lack of ventilation of the temperature and relative humidity sensors attached to the AEM results in incorrect measurements of air temperature and relative humidity by the right aspirator probes, and therefore all quantities calculated from them, including sensible and latent heat fluxes, are incorrect as well. The quantities that are incorrect for the period above 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, 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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/1995 | 1130 | 04/18/1995 | 1530 |
Subject: | SGP/EBBR/E9 - Water in Net Radiometer |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The top dome of the net radiometer was broken and a small amount of water had collected in the bottom dome of the net radiometer. It is not obvious that it had been there for more than several hours before the site operators arrived for a preventative maintenance visit. There are noticable effects on the data for the period listed above. The domes were replaced. The following data is incorrect for the period above: 5 minute: q 15 minute: mv_q 30 minute: q, e, h |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/26/1995 | 1945 | 04/26/1995 | 2000 |
Subject: | SGP/EBBR/E26 - Reprocess: Soil Heat Flow Sensor 1 Replacement |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | During preventative maintenance, site operations personnel observed that soil heat flow sensor #1 at Cement, OK (E26) was outputting larger values than the other four sensors. Therefore, they replaced sensor #1. A review of the data indicates that the sensor was not malfunctioning, but that its calibration was just too large. The longer the sensors are in the ground, the greater the likelihood that they will drift from their original calibration. The difference in the average soil heat flux caused by the #1 sensor data values being included in the average will have less than a 5% affect on the calculated latent and sensible heat fluxes. The data should therefore not be labelled as incorrect. However, during the replacement of sensor #1, the #1 data was spiked, causing the following data values to be incorrect for the period listed: 15 minute: mv_hft1 at 1945 GMT. 30 minute: shf5, c_shf5, g5, ave_shf, e, h, bowen at 2000 GMT. The latent and sensible heat fluxes can be recalculated by using only soil heat flows 2 through 5 to calculate the average soil heat flow, ave_shf = (g2 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q). |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/1995 | 1705 | 05/16/1995 | 1900 |
05/24/1995 | 1930 | 05/28/1995 | 0100 |
05/28/1995 | 0130 | 06/01/1995 | 1630 |
06/05/1995 | 1730 | 06/05/1995 | 1900 |
06/06/1995 | 1530 | 06/06/1995 | 1900 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned continuously during the periods of time indicated above as continuous. On May 16, 1995, by 1900 GMT, the probe was replaced (old S/N 92007, new S/N 92013). There was a complete loss of data between 1200 and 1900 GMT as Site Operations repaired a corroded battery terminal. For several days the right air temperature probe worked well. However, between May 24 and 28, the right air temperature probe malfunctioned continuously again. The right air temperature probe malfunctioned intermittently between May 28 and June 1, as well as during short periods on June 5 and 6. The cause of these latter periods is unknown; the time periods do not correspond with any Site Operations activities. During the intermittent periods the data that is not offscale should be viewed as questionable, as it is not always easy to detect what effect the malfunction might have had on that data. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the periods indicated. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, e, h. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/06/1995 | 2205 | 03/07/1995 | 2230 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On March 6, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Cement, OK (E26). 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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/1995 | 0245 | 03/08/1995 | 1640 |
Subject: | SGP/EBBR/E9 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On March 7, 1995 freezing rain stopped the cups of the EBBR wind speed instrument at Ashton, KS (E9). 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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/11/1995 | 0100 | 03/11/1995 | 0600 |
03/11/1995 | 1530 | 03/12/1995 | 1930 |
03/13/1995 | 0430 | 03/13/1995 | 0500 |
03/16/1995 | 1830 | 03/18/1995 | 1100 |
03/19/1995 | 2100 | 03/20/1995 | 0400 |
03/20/1995 | 1530 | 03/20/1995 | 1700 |
03/10/1995 | 2100 | 03/10/1995 | 2130 |
Subject: | SBP/EBBR/E9 - Reprocess: Soil Heat Flow Sensor 5 Incorrect Data |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | Soil heat flow sensor #5 periodically outputted incorrect values during the period above. The output often indicated large negative heat flow. The sensor connections were tightened on March 20, 1995, which seems to have corrected the problem. The data affected (and thus incorrect) includes: 15 minute: mv_hft5 30 minute: shf5, c_shf5, g5, ave_shf, e, h. The dates and times (GMT) of incorrect values are listed below. Only half hour times are listed. 03/10/95 2130 03/11/95 0100-0600, 1530-2330 03/12/95 0000-1930 03/13/95 0500 03/16/95 1830-2330 03/17/95 0000-2330 03/18/95 0000-1100 03/19/95 2100-2330 03/20/95 0000-0400, 1530-1700 The latent and sensible heat fluxes can be recalculated by using only soil heat flows 1 through 4 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/1995 | 2000 | 03/19/1995 | 0500 |
03/19/1995 | 1905 | 04/12/1995 | 1430 |
Subject: | SGP/EBBR/E26 - Frozen Wind Speed Sensor |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | A broken lead on the EBBR wind speed instrument cable at Cement, OK (E26) resulted in the loss of wind speed data. It was nearly a month before the cable could be repaired and reinstalled. All 5, 15, and 30 minute data values indicated below are incorrect for the periods listed above. 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/1995 | 0345 | 09/12/1995 | 2000 |
Subject: | SGP/EBBR/E26 - AEM not exchanging |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On August 26, 1995 at approximately 0345 GMT the gears on the lower sprocket shaft of the AEM appear to have been damaged, causing the AEM to stop exchanging. The home signal values then remained at around -0.5 for both home_15 and Home_30. On August 29 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. 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 26, 1995 at 0345 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: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/1995 | 0345 | 09/12/1995 | 2000 |
Subject: | SGP/EBBR/E26 - AEM replacement |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Please see DQR P950908.2, where this problem was first documented. On August 26, 1995 at approximately 0345 GMT the gears on the lower sprocket shaft of the AEM appear to have been damaged, causing the AEM to stop exchanging. The home signal values then remained at around -0.5 for both home_15 and Home_30. On August 29 site operations personnel removed the fuse (to prevent exchange) with the left aspirator in the down position. On 12 September 1995 the AEM was replaced at 1959 GMT (old S/N 92004, new S/N 92008) and is functioning properly. Calculations of Bowen ratio, latent heat flux, and sensible heat flux are incorrect for all times during the period above. The data fields listed below are incorrect during the period: 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: | sgp30ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/27/1995 | 2100 | 10/13/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Battery Voltage Drop |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Shortly after the PM visit on September 26, 1995 the EBBR battery voltage at E26, Cement, OK declined to lower than acceptable levels. During the October 13, 1995 PM visit the battery was replaced. I do not know the specifics of why the battery voltage declined so suddenly, but failure of one or more of the battery cells is a possibility. I have not received the site operations log of the PM visit yet. The voltage dropped to 10 volts at night. At various times, soil temperature, soil heat flux plate output, and atmospheric pressure (at least) were not reported correctly by the CR10 datalogger. Amazingly, the AEM continued to work and reported millivolt outputs that did not fall below the acceptable ranges. All data between 2100 GMT on September 26, 1995 and 1230 GMT on October 13, 1995 should be considered suspect, particularly when the battery voltage fell below 11 volts (every nighttime). This general caution is issued because incorrect reporting of data also took place during times when the battery voltage was reported as 12 Volts, a normally acceptable level; the reason for this behavior is unknown. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/12/1995 | 0000 | 10/13/1995 | 1230 |
Subject: | SGP/EBBR/E26 - Net Radiometer Dome Punctured |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | The upper dome of the net radiometer was punctured sometime between the PM visits of September 12 and 26, 1995. After the puncture, water collected in the top hemisphere. The water was removed on September 26, but a replacement dome was not available. The dome was replaced during the PM visit on October 13, 1995. The puncture and water did not result in obviously incorrect data. I cannot tell when the puncture occurred from the data. The data, particularly during the two weeks between September 12 and 26, 1995, should be considered suspect. Suspect net radiation data results in the latent heat flux and sensible heat flux also being suspect. Suspect data then includes: 5 minute: q 15 minute: mv_q 30 minute: q, e, h. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/1995 | 1530 | 10/05/1995 | 1830 |
Subject: | SGP/EBBR/E9 - 3-month Check |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/1995 | 1545 | 11/01/1995 | 1845 |
Subject: | SGP/EBBR/E26 - Right Tair Offscale |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | On 1 November 1995 at E26, Cement, OK EBBR the right thermocouple output went offscale for a few hours. The cause for this is unknown and the sensor recovered fully. Incorrect data for the period above includes: 5 minute: tair_top, tair_bot 15 minute: tair_r, tair_l 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/1995 | 0240 | 11/11/1995 | 1505 |
Subject: | SGP/EBBR/E26 - Wind Speed Cups Frozen |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Freezing rain, snow, and below freezing conditions during the night of 10-11 November 1995 resulted in the wind speed sensor cups becoming frozen in a stopped state at E26, Cement, OK on early 11 November 1995. When temperatures rose to almost freezing under cloudless skies later in the day, the ice thawed and the cups were free to turn 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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/11/1995 | 0145 | 11/11/1995 | 1600 |
Subject: | SGP/EBBR/E9 - AEM Exchange Stopped in Snow and Freezing Rain |
DataStreams: | sgp30ebbrE9.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: | sgp30ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1995 | 1230 | 11/15/1995 | 2100 |
Subject: | SGP/EBBR/E9 - Annual calibration changeout |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | On November 15, 1995 the changeout for annual calibration occurred at E9, Ashton, KS. SEBS unit 4 was removed and unit 6 was installed. Between 1230 and 2100 GMT no data was collected; data during this period is missing. |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/1995 | 2110 | 12/19/1995 | 1425 |
Subject: | SGP/EBBR/E26 - Wind Speed Cups Frozen |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.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 E26, Cement, 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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/1995 | 1630 | 12/31/1995 | 1930 |
Subject: | SGP/EBBR/E26 - Right Tair Offscale |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | On 26 and 31 December 1995 at E26, Cement, OK EBBR the right thermocouple output went offscale. The cause for this is unknown and the sensor recovered fully. Five minute data would need to be inspected during the periods above for incorrect five minute values. Site Operations has been asked to check the sensor connections. Incorrect data for the period indicated includes: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1996 | 1515 | 01/05/1996 | 0430 |
01/07/1996 | 2015 | 01/07/1996 | 2330 |
01/08/1996 | 1545 | 01/09/1996 | 1330 |
01/09/1996 | 2000 | 01/09/1996 | 2030 |
Subject: | SGP/EBBR/E26 - Right tair Offscale |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | On five days in January 1996 at E26, Cement, OK EBBR the right thermocouple output went offscale. The cause for this is unknown, although poor probe connections are common. Site Operation personnel tightened the probe connections in mid January. Five minute data would need to be inspected during the periods indicated for incorrect five minute values. Incorrect data for the period indicated includes: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, h, e The data are not recoverable from other measurements. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/23/1996 | 0450 | 01/23/1996 | 1555 |
Subject: | SGP/EBBR/E9 - Wind Speed Cups Frozen |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.b1 |
Description: | Freezing rain, snow, and below freezing conditions during 23 January 1996 caused the wind speed sensor cups to freeze in a stopped state at E9, Ashton, KS. Site operations personnel removed the ice from the cups later in the day to allow them to turn 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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1996 | 1715 | 04/01/1996 | 1830 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned and produced incorrect data during the period of time indicated above. The cause of the problem is unknown. The right air temperature probe appears to be working well presently. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the period above. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r (1715-1830 GMT values) 30 minute: tair_top, tair_bot, bowen, e, and h (1730-1830 GMT values) |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/1996 | 1500 | 04/23/1996 | 2115 |
Subject: | SGP/EBBR/E26 - Right Air Temp Malfunction |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned and produced incorrect data during the period of time indicated above. The probe (S/N 92013) was replaced by Site Operations on 23 April 1996 at 2115 GMT with S/N 92002. The malfunction of the right air temperature probe 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_r (1515-2115 GMT values) 30 minute: tair_top, tair_bot, bowen, e, and h (1530-2130 GMT values) |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/1996 | 1820 | 04/09/1996 | 2000 |
Subject: | SGP/EBBR/E26 - 3-month check |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.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; data times affected do not include the beginning time and do include the ending time (data files are denoted by the end time). |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/1996 | 1731 | 04/30/1996 | 1800 |
Subject: | SGP/EBBR/E9 - 3-month check |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/20/1996 | 1430 | 09/20/1996 | 1500 |
Subject: | SGP/EBBR/E9 - Air Temperature Thermocouples Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | Both air temperature thermocouples were offscale, for unknown reasons, for 1500 GMT for both 15 and 30 minute air temperature values. The malfunction of the air temperature thermocouples results in incorrect Bowen ratio, sensible heat flux, and latent heat flux during the period above. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r, tair_l 30 minute: tair_top, tair_bot, bowen, e, and h |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/1996 | 1015 | 08/13/1996 | 1800 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Wind Direction and resultant wind speed data for the period listed above is incorrect. Wind direction would not record outside 0 to 20 degrees. This is a common malfunction in this style of wind direction sensor. The sensor was replaced on 13 August 1996. The old sensor S/N was K3038 and new sensor is S/N K3033. The affected data values are: 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/12/1996 | 0000 | 07/05/1996 | 2359 |
Subject: | SGP/EBBR/E26 - Right Air Temperature Malfunction |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | The right air temperature probe malfunctioned again and produced incorrect data (outside of range) during some of the period indicated above. The cause of the problem is unknown. On 18 June site operations tightened the connection to the J-panel and repaired a broken aspirator fan wire. However, incorrect data resumed shortly after site operations left the site. Data continued to be incorrect during some times through July 5. No incorrect data was recorded from July 6 through July 17. The EBBR unit was changed out on July 17, 1996. The times of incorrect right air temperatures are easy to recognize from the EBBR data, so the precise times of incorrect data are not enumerated here. Typically, the top and bottom air temperature is out of range, resulting in the sensible heat flux being zero. The malfunction of the right air temperature probe results in incorrect Bowen ratio, sensible heat flux, and latent heat flux. The data values that are affected are: 5 minute: tair_top, tair_bot 15 minute: tair_r 30 minute: tair_top, tair_bot, bowen, e, and h |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1996 | 1557 | 11/15/1996 | 1630 |
Subject: | SGP/EBBR/E9 - EBBR 3 Month Checks - 10 EFs |
DataStreams: | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/24/1996 | 1550 | 10/24/1996 | 1613 |
Subject: | SGP/EBBR/E26 - EBBR 3 Month Checks - 10 EFs |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/16/1996 | 1500 | 07/16/1996 | 2230 |
Subject: | SGP/EBBR/E26 - Annual Calibration Changeout |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On 16 November 1996 the EBBR changeout for annual calibration occurred at E26, Cement, OK. SEBS unit 2 was removed and unit 8 was installed. Between 1500 and 2230 GMT no data or incorrect data was collected; most of the data is missing. 3 month calibration checks were being performed. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/1996 | 2000 | 11/19/1996 | 1830 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Wind Direction and resultant wind speed data for much of the period listed above is incorrect. Wind directions of 135, 0, or 360 would continue for extended periods. This behavior is indicative of a failed sensor. This is a common malfunction in this style of wind direction sensor. A work request has been submitted to site operations for replacement of the sensor. All values of 135, 0, and 360 should be considered to be incorrect during the period above. Furthermore, more incorrect data may occur until the sensor is replaced (by 6 December). The affected data values are: 5 minute: wind_d, sigma_wd, res_ws 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd, res_ws |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/1996 | 2000 | 11/19/1996 | 1825 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Failure |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Wind Direction and Sigma of Wind Direction data for the period listed is incorrect. The wind direction sensor began to malfunction on 6 November, with the characteristic constant 135 degree output. At other times the output remained a nearly constant 230 to 240 degrees. On 16 November at 1819 GMT site operations replaced sensor S/N 3033 with S/N 3036. Apparently they left it aligned at north when they left the EF; output for the next few days was 0 or 360 degrees, until they returned on 19 November at 1825 GMT and gave the vane it's freedom. Affected fields are: 5 minute: wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: wind_d, sigma_wd |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/15/1996 | 1715 | 06/18/1997 | 1645 |
Subject: | SGP/EBBR/E9 - Temperature Portion of T/RH Probe |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | The Temperature portion of the right T/RH probe indicated too high a temperature for nearly 11 months. I twice placed work requests to have the probe replaced, but no spares were available. Spares recently became available and I placed a new work request to have the probe changed. The replacement occurred on 18 June 1997; this fixed the problem. The main results of the high temperatures were probe top and bottom temperatures (used only for the calculation of vapor pressure) and vapor pressures that were too large. Furthermore, this caused latent heat flux to be reported to be too large, and therefore sensible heat flux was reported to be too small. Recalculation of the fluxes using thermocouple temperatures to calculate vapor pressure would be quite time consuming and would have to assume that the thermocouple temperature and probe temperature were nearly the same. The EBBR procedures have been changed to include comparison of the thermocouple and probe temperatures to make it easier for the site operators to detect this condition. The data affected (and thus incorrect) includes: 15 minute: rr_thum_r 30 minute: thum_top, thum_bot, vp_top, vp_bot, e, h, bowen. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/1996 | 1930 | 06/17/1997 | 2030 |
Subject: | SGP/EBBR/E26 - Reprocess: E26 Soil Heat Flow Sensor 1 Replacement |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
Description: | Apparently, during installation of the present system on 17 July 1996, soil heat flow sensor #4 was intentionally placed upside down in the soil to produce the correct sign of flux. The leads from the sensor must have been connected with the wrong polarity. On 3 December 1996 site operations corrected some wiring problems and reconnected soil heat flow sensor #4 according to the proper color code; this caused the sign of the soil heat flow from that sensor to then be opposite of the other four sensors. All data from sensor #4 is the wrong sign during the period listed above. On 17 June 1997 site operations removed the sensor and installed it with the correct side up, fixing the problem. The result of this problem was a decrease of reported average soil heat flow of approximately 40%. This translates into a 0 to 20% error in latent and sensible heat fluxes (soil heat flow is rarely more than 50% of net radiation, upon which the Bowen ratio calculation depends). Therefore, sensible and latent heat fluxes were typically overestimated by about 10% during the daytime. This is of the same magnitude as the EBBR system/technique error. The following data values were affected for the period listed above: 15 minute: mv_hft4 30 minute: shf4, c_shf4, g4, ave_shf, e, h The latent and sensible heat fluxes can be recalculated by using only soil heat flows 1, 2, 3, and 5 to calculate the average soil heat flow, ave_shf = (g1 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q). |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/1997 | 1845 | 04/15/1997 | 1915 |
Subject: | SGP/EBBR/E9 - EBBR Biannual Checks |
DataStreams: | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.b1 |
Description: | During EBBR 6 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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/1997 | 2008 | 04/23/1997 | 2050 |
Subject: | SGP/EBBR/E26 - EBBR Biannual Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/10/1997 | 0000 | 09/30/1997 | 1550 |
Subject: | SGP/EBBR/E9 - Wind Direction Sensor Malfunction |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | During numerous intermittent times during the period listed, the wind direction sensor at E9, Ashton, KS malfunctioned, putting out a value of 135. The sensor was replaced on 30 September 1997, at 1550 GMT. All wind direction data with values of 135 during the period listed should be considered incorrect. The affected data are: 5 minute: res_ws, wind_d, sigma_d 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_d |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/10/1997 | 0000 | 09/10/1997 | 2359 |
Subject: | SGP/EBBR/E26 - Bad Dates |
DataStreams: | sgp30ebbrE26.b1 |
Description: | At the end of the netcdf 30 minute file for 10 September 1997 there are two half hours with date 9 September 1997, and time 2200 GMT. It is unknown how this happens, but it does occasionally. Those two half hour records should be ignored. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1997 | 0715 | 12/21/1997 | 1115 |
01/04/1998 | 0745 | 01/05/1998 | 1710 |
01/09/1998 | 0945 | 01/09/1998 | 1610 |
Subject: | SGP/EBBR/E9 - EBBR Frozen Wind Speed |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/1998 | 1950 | 01/08/1998 | 2230 |
Subject: | SGP/EBBR/E26- EBBR Frozen Wind Speed |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/1998 | 1845 | 01/08/1998 | 1715 |
Subject: | SGP/EBBR/E9 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
DataStreams: | sgp15ebbrE9.b1, sgp5ebbrE9.b1, sgp30ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/24/1997 | 1630 | 01/08/1998 | 1800 |
Subject: | SGP/EBBR/E9 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/1997 | 2000 | 12/29/1997 | 1840 |
Subject: | SGP/EBBR/E26 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected |
DataStreams: | sgp5ebbrE26.b1, sgp30ebbrE26.b1, sgp15ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1998 | 0100 | 01/08/1998 | 2030 |
Subject: | SGP/EBBR/E26 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown) |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/1998 | 0500 | 01/15/1998 | 0030 |
Subject: | SGP/EBBR/E9 - Wind Speed Sensor Frozen |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | The wind speed sensor was frozen stalled during this period. Data values that were affected are: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/16/1997 | 1928 | 10/16/1997 | 2002 |
Subject: | SGP/EBBR/E9 - 3-Month Check |
DataStreams: | sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp15ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1997 | 2125 | 10/21/1997 | 2148 |
Subject: | SGP/EBBR/E26 - 3-Month Check |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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 indicated. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/18/1997 | 0130 | 06/18/1997 | 0200 |
Subject: | SGP/EBBR/E26 - Character In EBBR E26, 30 Minute Data |
DataStreams: | sgp30ebbrE26.b1 |
Description: | A non-numeric character appears in the field for shf1 in the 30 minute data file at the time shown. Data processing programs that assume that a numeric character is there will display an error condition. I had to create a short routine to put in my analysis program to avoid using that data point. |
Measurements: | sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/1998 | 1646 | 05/19/1998 | 1717 |
Subject: | SGP/EBBR/E26 - Six Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/14/1998 | 1740 | 05/14/1998 | 1759 |
Subject: | SGP/EBBR/E9 - Six Month Checks |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.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: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/1998 | 2100 | 11/25/1998 | 1830 |
Subject: | SGP/EBBR/E9 - Wind Direction Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | The wind direction sensor stopped working correctly, resulting in the following values being affected: 5 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 30 minute: res_ws, wind_d, sigma_wd |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0835 | 01/08/1999 | 1600 |
Subject: | SGP/EBBR/E26 - Wind Direction Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1998 | 0705 | 12/24/1998 | 1630 |
01/08/1999 | 0315 | 01/09/1999 | 0600 |
Subject: | SGP/EBBR/E26 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0315 | 01/09/1999 | 0600 |
Subject: | SGP/EBBR - EBBR E26 Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
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: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/09/1999 | 0200 | 01/14/1999 | 1830 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low, Data Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
Description: | Battery voltages less than 10.4 volts occurred some of the time. All data should be considered incorrect when the voltage is less than 10.4 volts. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/1998 | 1230 | 11/12/1998 | 2000 |
Subject: | SGP/EBBR/E9 - EBBR E9 Net Radiometer Dome Broken, Flux Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | Incorrect Net Radiation values resulted in incorrect sensible and latent heat fluxes. Affected values are: 5 minute: q 15 minute: mv_q 30 minute: q, e, h |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1515 | 01/03/1999 | 1830 |
Subject: | SGP/EBBR/E9 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
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: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/1999 | 0605 | 01/08/1999 | 1900 |
Subject: | SGP/EBBR/E9 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
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: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/30/1998 | 0300 | 12/30/1998 | 1300 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
Description: | Battery voltage dropped below 10.4 volts. All data should be considered to be incorrect. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1999 | 1415 | 04/02/1999 | 1645 |
Subject: | SGP/EBBR/E26 - Calibration Changeout |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
Description: | The data from this period was either missing or incorrect during the calibration changeout of the EBBR unit. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/1999 | 1645 | 04/02/1999 | 1800 |
Subject: | SGP/EBBR/E26 - Incorrect Data |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgpebbrE26.00, sgp5ebbrE26.00 |
Description: | All data is incorrect for this time. This problem was related to changeout activities. |
Measurements: | sgpebbrE26.00:
sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/22/1999 | 0750 | 04/29/1999 | 1850 |
Subject: | SGP/EBBR/E9 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1, sgp5ebbrE9.00 |
Description: | The wind speed sensor lost two of the three cups. Flux data is not affected. The data values affected are: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp30ebbrE9.b1:
sgp5ebbrE9.00:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/1999 | 1830 | 04/15/1999 | 1900 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Incorrect Data |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
Description: | The battery voltage dropped suddenly to 8 volts at 1900 GMT, making all data incorrect for that time. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/1999 | 2245 | 04/29/1999 | 0600 |
Subject: | SGP/EBBR/E26 - Battery Wire Problem Causes Questionable Data |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp5ebbrE26.00 |
Description: | The battery voltage dropped to less than 10.4 volts, causing all data to be suspect for the time period. |
Measurements: | sgp30ebbrE26.b1:
sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp5ebbrE26.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/13/1999 | 1230 | 06/11/1999 | 1645 |
Subject: | SGP/EBBR/E9 - Right Aspirator Not Working |
DataStreams: | sgp15ebbrE9.b1, sgp30ebbrE9.b1, sgp5ebbrE9.b1 |
Description: | The result of the right aspirator not working was a reduction in measured temperature gradient and thus a reduction in estimated sensible heat flux and an increase in latent heat flux. The fluxes could be in error by as much as 10%. Reported right air and humidity probe temperatures, top and bottom air and humidity probe temperatures, right relative humidity, and top and bottom vapor pressure are affected. |
Measurements: | sgp30ebbrE9.b1:
sgp15ebbrE9.b1:
sgp5ebbrE9.b1:
|