DQR ID | Subject | Data Streams Affected |
---|---|---|
D010213.12 | SGP/EBBR/E26 - Wind Speed Iced | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010213.8 | SGP/EBBR/E22 - EBBR E22 Wind Speed Iced | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D010427.13 | SGP EBBR E22 - E22 EBBR Soil Moisture Lower Than Measurement Capability | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D010427.14 | SGP EBBR E22 - E22 EBBR Soil Moisture #3 Lower Than Can Be Measured | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D010427.15 | SGP EBBR E22 - E22 EBBR Net Radiation Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D010605.20 | SGP EBBR E26 - Data Suspect, Low Battery Voltage | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010605.22 | SGP EBBR E26 - All Data Incorrect | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010605.25 | SGP EBBR E26 - Soil Heat Flow #3 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.3 | SGP EBBR E26 - Soil Moisture #1 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.4 | SGP EBBR E26 - AEM Inbetween, Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.5 | SGP EBBR E26 - Soil Heat Flow #5 Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.7 | SGP EBBR E26 - Some Data Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D010723.8 | SGP EBBR E26 - Some Data Incorrect | sgp30ebbrE26.b1 |
D011127.32 | SGP EBBR E22 - E22 EBBR Data Incorrect During 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D011127.34 | SGP EBBR E26 - Data Incorrect During 6 Month Checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D011206.1 | SGP EBBR E26 - Low Battery Voltage | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D011206.2 | SGP EBBR E26 - Battery Voltage Low | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D011206.4 | SGP EBBR E22 - E22 EBBR 30 Minute Data Incorrect After Missing Data | sgp30ebbrE22.b1 |
D020716.17 | SGP/EBBR/E22 - 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D020716.18 | SGP/EBBR/E26 - 6 Month Checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D020717.34 | SGP/EBBR/E22 - All Measurements Zero | sgp5ebbrE22.00, sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D020717.35 | SGP/EBBR/E22 - AEM Hung or High Home Signals | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D020717.37 | SGP/EBBR/E26 - Measurements Zero | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D020717.38 | SGP/EBBR/E26 - Measurements Incorrect | sgp30ebbrE26.b1 |
D020717.39 | SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D021113.1 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE2.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1, sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1 |
D021113.4 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1, sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1 |
D030110.26 | SGP/EBBR/E22 - Data Incorrect during 6 month checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D030110.27 | SGP/EBBR/E26 - Data Incorrect during 6 month checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030117.16 | SGP/EBBR/E22 - AEM Hung between home positions | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D030117.17 | SGP/EBBR/E22 - Water inside Broken Net Rad Dome | sgp5ebbrE22.b1, sgp30ebbrE22.b1 |
D030117.26 | SGP/EBBR/E26 - Measurements zero following logger restart | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030117.27 | SGP/EBBR/E26 - Multiplexer Problem | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030117.28 | SGP/EBBR/E26 - Water in broken Net Radiometer Dome | sgp5ebbrE26.b1, sgp30ebbrE26.b1 |
D030117.29 | SGP/EBBR/E26 - Battery Voltage Low | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030128.2 | SGP/EBBR/E26 - AEM Hung | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030128.3 | SGP/EBBR/E26 - Data zeros following logger restart | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030128.4 | SGP/EBBR/E26 - Left Air Temperature Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030711.7 | SGP/EBBR/E22 - home30 too large | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D030712.22 | SGP/EBBR/E22 - 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D030712.23 | SGP/EBBR/E26 - 6 Month Checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030728.4 | SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive | sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D030729.4 | SGP/EBBR/E22 - AEM Hung Inbetween Home Positions | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D030916.2 | SGP/EBBR/E22 - AEM Home Signals Too High | sgp5ebbrE22.b1, sgp30ebbrE22.b1 |
D030919.11 | SGP/EBBR/E26 - Soil Storage Incorrect; Surface Fluxes Incorrect | sgp30ebbrE26.b1 |
D031031.8 | SGP/EBBR/E22 - Water in Net Radiometer, Surface Fluxes Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D031103.1 | SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D031204.20 | SGP/EBBR/E22 - 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D031204.21 | SGP/EBBR/E26 - 6 Month Checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D031211.3 | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D031222.21 | SGP/EBBR/E22 - Wind Speed Sensor Frozen By Ice Storm | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D031222.22 | SGP/EBBR/E22 - Wind Direction Sensor Frozen By Ice Storm | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D031222.24 | SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D031222.25 | SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D040303.2 | SGP/EBBR/E22 - Wind Speed Sensor Bearings Worn | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D040304.21 | SGP/EBBR/E22 - Wind Speed Frozen Stopped By Ice | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D040304.22 | SGP/EBBR/E22 - Wind Direction Frozen Stopped By Ice | sgp5ebbrE22.b1, sgp30ebbrE22.b1 |
D040304.28 | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D040304.29 | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice | sgp5ebbrE26.b1, sgp30ebbrE26.b1 |
D040706.2 | SGP/EBBR/E22 - Net Radiation Incorrect | sgp5ebbrE22.b1, sgp30ebbrE22.b1 |
D040723.3 | SGP/EBBR/E22 - Water In Net Radiometer | sgp5ebbrE22.b1, sgp30ebbrE22.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 | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D041222.17 | SGP/EBBR/E22 - 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D041222.18 | SGP/EBBR/E26 - 6 Month Checks | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D041222.4 | SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D041222.5 | SGP/EBBR/E26 - Most Measurements Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D050206.15 | SGP/EBBR/E22 - Wind Speed Frozen Stopped By Ice Storm | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050206.16 | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice Storm | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D050207.11 | SGP/EBBR/E22 - Wind Direction Frozen Stopped By Ice Storm | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050207.12 | SGP/EBBR/E26 - Wind Direction Frozen Stopped By Ice Storm | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D050211.1 | SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D050215.21 | SGP/EBBR/E22 - Wind Speed Frozen Stopped By Ice | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050215.22 | SGP/EBBR/E22 - Wind Direction Frozen Stopped By Ice | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050323.2 | SGP/EBBR/E22 - Net Radiation Too Low - Top Dome Broken | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050324.3 | SGP/EBBR/E26 - Incorrect soil type coefficients used | sgp30ebbrE26.b1 |
D050719.14 | SGP/EBBR/E22 - Improved EBBR CR10 Program | sgp30ebbrE22.b1 |
D050719.15 | SGP/EBBR/E26 - Improved EBBR CR10 Program | sgp30ebbrE26.b1 |
D051106.13 | SGP/EBBR/E22 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D051106.29 | SGP/EBBR/E22 - Average Soil Heat Flux Incorrect | sgp30ebbrE22.b1 |
D051106.30 | SGP/EBBR/E26 - Average Soil Heat Flux Incorrect | sgp30ebbrE26.b1 |
D051112.8 | SGP/EBBR/E22 - metadata corrections | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D051112.9 | SGP/EBBR/E26 - metadata corrections | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D051222.1 | SGP/EBBR/E26 - Data Suspect During Low Supply Voltage | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D060112.1 | SGP/EBBR/E22 - Sensible and Latent Heat Fluxes Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D060428.4 | SGP/EBBR/E22 - Fluxes Incorrect When Soil Heat Flow #3 Out of Range | sgp30ebbrE22.b1 |
D060501.25 | SGP/EBBR/E22 - Wind Speed Sensor Frozen Stopped | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D060501.26 | SGP/EBBR/E26 - Measurements Incorrect | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
D060921.8 | SGP/EBBR/E22 - Net Radiation and Sensible and Latent Heat Fluxes Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D061106.5 | SGP/EBBR/E22 - Soil Heat Flow #4 Incorrect - Sensible and Latent Heat Fluxes Sometimes Affected | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D061220.13 | SGP/EBBR/E22 - Wind Direction Dependency of Surface Fluxes and General Data Quality Information | sgp30ebbrE22.b1 |
D061220.15 | SGP/EBBR/E26 - Wind Direction Dependency of Surface Fluxes and General Data Quality Information | sgp30ebbrE26.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, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
12/25/2000 | 1315 | 12/27/2000 | 2015 |
Subject: | SGP/EBBR/E22 - EBBR E22 Wind Speed Iced |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The anemometer was frozen stopped by freezing rain. Indicated data is incorrect. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/21/2000 | 1900 | 04/27/2000 | 1031 |
05/10/2000 | 2000 | 06/11/2000 | 0531 |
07/08/2000 | 1800 | 10/16/2000 | 0231 |
Subject: | SGP EBBR E22 - E22 EBBR Soil Moisture Lower Than Measurement Capability |
DataStreams: | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The indicated measurements were incorrect because soil moisture dropped below (sometimes even negative) the ability of the probes to measure it. |
Measurements: | sgp30ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/16/2000 | 0235 | 10/22/2000 | 0316 |
Subject: | SGP EBBR E22 - E22 EBBR Soil Moisture #3 Lower Than Can Be Measured |
DataStreams: | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The soil moisture was too low to be measured correctly by probe #3. |
Measurements: | sgp30ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/16/2000 | 0130 | 10/18/2000 | 1841 |
Subject: | SGP EBBR E22 - E22 EBBR Net Radiation Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Water inside the domes of the net radiometer caused measurements from it to be incorrect. Calculated latent and sensible heat fluxes were therefore incorrect also. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
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 |
01/02/2001 | 1600 | 01/02/2001 | 2201 |
01/03/2001 | 1530 | 01/03/2001 | 1631 |
Subject: | SGP EBBR E26 - All Data Incorrect |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.b1 |
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 |
---|---|---|---|
06/15/2000 | 1500 | 06/19/2000 | 2201 |
11/05/2000 | 1900 | 11/16/2000 | 1601 |
11/30/2000 | 1600 | 12/03/2000 | 0731 |
12/14/2000 | 1600 | 12/16/2000 | 0301 |
Subject: | SGP EBBR E26 - Soil Heat Flow #3 Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
04/18/2001 | 1715 | 04/18/2001 | 1821 |
10/10/2001 | 1800 | 10/10/2001 | 1857 |
Subject: | SGP EBBR E22 - E22 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
03/07/2001 | 2000 | 03/07/2001 | 2001 |
Subject: | SGP EBBR E22 - E22 EBBR 30 Minute Data Incorrect After Missing Data |
DataStreams: | sgp30ebbrE22.b1 |
Description: | Complete soil temperature information is not available when the data is missing for the previous half hour. Since soil temperature difference with time cannot be computed properly, the selected calculated quantities are incorrect. |
Measurements: | sgp30ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/15/2002 | 1810 | 05/15/2002 | 1846 |
Subject: | SGP/EBBR/E22 - 6 Month Checks |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
02/07/2002 | 1845 | 02/07/2002 | 1901 |
Subject: | SGP/EBBR/E22 - All Measurements Zero |
DataStreams: | sgp5ebbrE22.00, sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The measurements are often all zero the first period after a CR10 restart, as occurred here. |
Measurements: | sgp5ebbrE22.00:
sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/17/2001 | 1230 | 01/09/2002 | 1531 |
01/09/2002 | 1545 | 01/12/2002 | 0001 |
01/12/2002 | 0515 | 01/15/2002 | 0031 |
02/08/2002 | 0845 | 02/08/2002 | 2031 |
02/08/2002 | 2145 | 02/14/2002 | 2001 |
02/14/2002 | 2015 | 02/16/2002 | 1531 |
02/16/2002 | 1945 | 02/17/2002 | 0001 |
02/17/2002 | 0415 | 02/20/2002 | 0531 |
02/20/2002 | 0815 | 02/20/2002 | 1831 |
02/28/2002 | 1030 | 03/06/2002 | 1901 |
04/21/2002 | 2000 | 05/29/2002 | 1831 |
Subject: | SGP/EBBR/E22 - AEM Hung or High Home Signals |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The automatic exchange mechanism hung some times and continued to switch at other times, although with high home signal values. If home signal values are not in the proper ranges, the gradient calculation is not performed properly by the CR10 program. Affected flux measurements cannot be recalculated. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/30/2002 | 1500 | 05/30/2002 | 1501 |
Subject: | SGP/EBBR/E26 - Measurements Zero |
DataStreams: | sgp5ebbrE26.00, sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
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: | sgp30ebbrE2.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1, sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. |
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: | sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1, sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. (NOTE: The actual begin date of some of these data streams is as early as 7/4/93. This DQR applies to all 30m EBBR data.) |
Measurements: | 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 |
---|---|---|---|
11/13/2002 | 1900 | 11/13/2002 | 1930 |
Subject: | SGP/EBBR/E22 - Data Incorrect during 6 month checks |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
09/04/2002 | 1715 | 09/04/2002 | 1730 |
10/13/2002 | 1230 | 10/13/2002 | 1234 |
10/13/2002 | 1300 | 10/15/2002 | 1930 |
10/15/2002 | 2145 | 10/15/2002 | 1630 |
Subject: | SGP/EBBR/E22 - AEM Hung between home positions |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | When the AEM (Automatic Exchange Mechanism) is hung inbetween home positions, the gradients of temperature and relative humidity, and thus sensible and latent heat fluxes, are incorrect. There is no work-around to this problem. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/29/2002 | 0830 | 08/07/2002 | 1800 |
Subject: | SGP/EBBR/E22 - Water inside Broken Net Rad Dome |
DataStreams: | sgp5ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
01/01/2003 | 0000 | 06/25/2003 | 1700 |
Subject: | SGP/EBBR/E22 - home30 too large |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The home30 measurements sometimes exceeded 34.9999, resulting in the qc flag being set. However, this does not create any data quality issues. The qc flag is set just to provide an alert that the automatic exchange mechanism may have a problem; in this case data was not affected. An electronics repair solved the problem. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/2003 | 1720 | 04/30/2003 | 1800 |
Subject: | SGP/EBBR/E22 - 6 Month Checks |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
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 |
---|---|---|---|
07/16/2003 | 0330 | 07/23/2003 | 1830 |
07/24/2003 | 1500 | 08/06/2003 | 1730 |
Subject: | SGP/EBBR/E22 - AEM Hung Inbetween Home Positions |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The AEM was hung inbetween home positions. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/16/2003 | 1745 | 09/17/2003 | 1900 |
Subject: | SGP/EBBR/E22 - AEM Home Signals Too High |
DataStreams: | sgp5ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The AEM home signals were too large at times during the indicated period; it has been determined by the vendor that this is usually caused by electrical noise in the vicinity. When the 30 minute data shows a home 30 signal of 35 or more, the bowen ratio, and sensible and latent heat flux measurements are incorrect Removing the jumper between 4L and AG on the CR10 and adding a jumper to Multiplexer 2, Set 6, between L1 and L2 fixed the problem. The vendor intends to make this modification to all EBBR systems as they return for re-calibration. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.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 |
---|---|---|---|
09/29/2003 | 1800 | 10/01/2003 | 1630 |
Subject: | SGP/EBBR/E22 - Water in Net Radiometer, Surface Fluxes Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
10/15/2003 | 1900 | 10/15/2003 | 1930 |
Subject: | SGP/EBBR/E22 - 6 Month Checks |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
10/13/2003 | 0000 | 09/29/2004 | 1845 |
Subject: | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
12/12/2003 | 1810 | 12/13/2003 | 2100 |
Subject: | SGP/EBBR/E22 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/2003 | 2345 | 12/14/2003 | 1520 |
Subject: | SGP/EBBR/E22 - Wind Direction Sensor Frozen By Ice Storm |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
12/13/2003 | 0000 | 03/17/2004 | 1835 |
Subject: | SGP/EBBR/E22 - Wind Speed Sensor Bearings Worn |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Wind speed was too low and/or often at or near zero due to worn bearings in the wind speed sensor. Sensor was replaced 3/17/04. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/24/2004 | 2345 | 01/25/2004 | 0135 |
02/01/2004 | 1920 | 02/02/2004 | 1740 |
02/03/2004 | 0350 | 02/03/2004 | 1440 |
02/05/2004 | 0925 | 02/05/2004 | 1615 |
Subject: | SGP/EBBR/E22 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/05/2004 | 1120 | 02/05/2004 | 1500 |
Subject: | SGP/EBBR/E22 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp5ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
06/22/2004 | 0400 | 06/23/2004 | 1650 |
Subject: | SGP/EBBR/E22 - Net Radiation Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Rain filled the bottom of the net radiometer with water, resulting in very high net radiations. Net radiation is incorrect during this period, also causing sensible and latent heat fluxes to be incorrect. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2004 | 1330 | 07/07/2004 | 1900 |
Subject: | SGP/EBBR/E22 - Water In Net Radiometer |
DataStreams: | sgp5ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Water entered the Net Radiometer through a cracked upper dome, causing the net radiation values to be too large. As a result, latent and sensible heat flux values are also incorrect. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
10/27/2004 | 1700 | 10/27/2004 | 1730 |
Subject: | SGP/EBBR/E22 - 6 Month Checks |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
01/05/2005 | 0845 | 01/07/2005 | 1555 |
Subject: | SGP/EBBR/E22 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
01/05/2005 | 0855 | 01/06/2005 | 1940 |
Subject: | SGP/EBBR/E22 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
10/10/2004 | 1400 | 02/17/2005 | 1630 |
Subject: | SGP/EBBR/E26 - Aging Pressure Sensor Output Changes With Supply Voltage |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
01/11/2005 | 0915 | 01/11/2005 | 2100 |
Subject: | SGP/EBBR/E22 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2005 | 1730 | 01/11/2005 | 1825 |
Subject: | SGP/EBBR/E22 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/06/2005 | 1400 | 03/16/2005 | 1900 |
Subject: | SGP/EBBR/E22 - Net Radiation Too Low - Top Dome Broken |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Net radiation values were too low because of a broken top dome. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.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 |
---|---|---|---|
04/01/2001 | 0000 | 03/30/2005 | 1930 |
Subject: | SGP/EBBR/E22 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE22.b1 |
Description: | Effective 20050330.1930, the EBBR.E20 CR10 program was revised to improve the quality of the primary measurements as follows: 1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow. This is applied to the individual soil sets. Measurements outside the limits are rejected and the measurements within the limits are used to calculate the average soil heat flow. 2) Max and min limits are used to determine incorrect values of net radiation, sensible heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal. If AEM signal is outside the limits, h and e are set to 999s. If net radiation is outside the limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s. Virtually no incorrect soil measurement will affect the primary measurements of h and e. By setting h and e to 999s, it can be easily seen that the primary variables are incorrect; no other interpretation is possible. Prior to 20050330, the improved CR10 program was NOT in effect. DQRs have been submitted for known instances of incorrect soil measurements which affected the quality of the primary measurements of h and e. Note: the DQR begin date is the begin date of the sgp30ebbrE20.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE20.a1). |
Measurements: | sgp30ebbrE22.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 |
---|---|---|---|
08/27/2005 | 2000 | 08/31/2005 | 1730 |
Subject: | SGP/EBBR/E22 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The net radiometer top dome was broken and water got inside, making the net radiation, and sensible and latent heat flux measurements incorrect. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/16/2005 | 1830 | 03/30/2005 | 1930 |
Subject: | SGP/EBBR/E22 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE22.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: | sgp30ebbrE22.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 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E22 - metadata corrections |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E22 data collected by ARM back to the installation of the instrument in April 1993. Please see the current metadata for correct information. These changes do not affect data values or quality. The changes are summarized below: 1) Update of "sensor location" information 2) Addition of installation dates for the systems 3) Correction of soil type 4) Correction of soil moisture units (from "by volume" to "gravimetric") |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E26 - metadata corrections |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
12/20/2005 | 0800 | 12/22/2005 | 1500 |
Subject: | SGP/EBBR/E26 - Data Suspect During Low Supply Voltage |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
01/10/2006 | 0730 | 01/18/2006 | 2000 |
Subject: | SGP/EBBR/E22 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/12/2006 | 1900 | 05/24/2006 | 1700 |
Subject: | SGP/EBBR/E22 - Fluxes Incorrect When Soil Heat Flow #3 Out of Range |
DataStreams: | sgp30ebbrE22.b1 |
Description: | When soil heat flow #3 exceeded the range limit in the EBBR program, it was replaced with 9999es. This caused the ave_shf and the sensible and latent heat fluxes to be incorrect. |
Measurements: | sgp30ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/21/2006 | 1130 | 01/21/2006 | 1700 |
01/22/2006 | 0100 | 01/22/2006 | 0730 |
Subject: | SGP/EBBR/E22 - Wind Speed Sensor Frozen Stopped |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The wind speed sensor was frozen to a stopped condition. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/2006 | 0400 | 02/25/2006 | 1700 |
Subject: | SGP/EBBR/E26 - Measurements Incorrect |
DataStreams: | sgp5ebbrE26.b1, sgp15ebbrE26.b1, sgp30ebbrE26.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 |
---|---|---|---|
08/21/2006 | 0630 | 08/30/2006 | 1800 |
Subject: | SGP/EBBR/E22 - Net Radiation and Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Rain entered the net radiometer, causing net radiation, and thus sensible and latent heat fluxes, to be too large. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/16/2006 | 0000 | 11/08/2006 | 1940 |
Subject: | SGP/EBBR/E22 - Soil Heat Flow #4 Incorrect - Sensible and Latent Heat Fluxes Sometimes |
DataStreams: | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Soil heat flow sensor #4 dropped to low values or offscale. Sensible and latent heat fluxes were sometimes affected. |
Measurements: | sgp30ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/04/1993 | 1200 | 10/12/2003 | 2330 |
Subject: | SGP/EBBR/E22 - Wind Direction Dependency of Surface Fluxes and General Data Quality |
DataStreams: | sgp30ebbrE22.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): 0-49, 139-360 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: | sgp30ebbrE22.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:
|