DQR ID | Subject | Data Streams Affected |
---|---|---|
D010213.8 | SGP/EBBR/E22 - EBBR E22 Wind Speed Iced | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D010427.11 | SGP EBBR E22 - E22 EBBR Data Incorrect During Logger Replacement | sgp5ebbrE22.00, 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 |
D011127.32 | SGP EBBR E22 - E22 EBBR Data Incorrect During 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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 |
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 |
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 |
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 |
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 |
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 |
D030917.21 | SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems | sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1, sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1, sgpthwapsC1.b1 |
D031031.8 | SGP/EBBR/E22 - Water in Net Radiometer, Surface Fluxes Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D031204.20 | SGP/EBBR/E22 - 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D031205.1 | SGP/THWAPS/B5 - T/RH Sensor Failure | sgpthwapsB5.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 |
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 |
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 |
D041222.17 | SGP/EBBR/E22 - 6 Month Checks | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050205.5 | SGP/THWAPS/B5 - Temperature Sensor failure | sgpthwapsB5.b1 |
D050206.15 | SGP/EBBR/E22 - Wind Speed Frozen Stopped By Ice Storm | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050207.11 | SGP/EBBR/E22 - Wind Direction Frozen Stopped By Ice Storm | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D050209.16 | SGP/THWAPS/B5 - Wind Data Suspect | sgpthwapsB5.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 |
D050719.14 | SGP/EBBR/E22 - Improved EBBR CR10 Program | sgp30ebbrE22.b1 |
D050812.4 | SGP/THWAPS/B5 - Minor biases in humidity and saturation vapor pressure | sgpthwapsB5.b1 |
D051101.9 | SGP/ECOR/E5 - Missing data | sgp30ecorE5.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 |
D051112.8 | SGP/EBBR/E22 - metadata corrections | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.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 |
D060616.3 | SGP/ECOR/E5 - CO2 and Water Vapor Fluxes and Means Incorrect | sgp30ecorE5.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 |
D070221.3 | SGP/THWAPS/B5 - Wind Speed and Direction Data Incorrect | sgpthwapsB5.b1 |
D070227.1 | SGP/ECOR/E5 - Reprocess: Time shifted -7 hours | sgpecorE5.00, sgp30ecorE5.b1 |
D070426.1 | SGP/EBBR/E22 - Wind Direction Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D070510.1 | SGP/ECOR/E5 - Flux Measurements Incorrect | sgp30ecorE5.b1 |
D070619.1 | SGP/ECOR/E5 - Flux Data Incorrect | sgp30ecorE5.b1 |
D070815.6 | SGP/EBBR/E22 - H and LE Incorrect | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D071010.2 | SGP/THWAPS/B5 - Reprocess: RH values 10% Above Actual | sgpthwapsB5.b1 |
D080116.21 | SGP/THWAPS/B5 - Wind Data Incorrect Due to Icing | sgpthwapsB5.b1 |
D090217.2 | SGP/ECOR/E5 - Incorrect Sensible and Latent Heat Fluxes | sgp30ecorE5.b1 |
D090313.6 | SGP/EBBR/E22 - Wind Speed Incorrect | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
D980117.1 | SGP/EBBR/E22 - Reprocess: E22 Soil Moisture Values Off End of Calibration at High Soil Moistures | sgp15ebbrE22.b1, sgp30ebbrE22.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 |
---|---|---|---|
04/05/2000 | 1900 | 04/05/2000 | 1901 |
04/05/2000 | 2000 | 04/05/2000 | 2001 |
Subject: | SGP EBBR E22 - E22 EBBR Data Incorrect During Logger Replacement |
DataStreams: | sgp5ebbrE22.00, sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The data was incorrect during replacement of the logger. |
Measurements: | sgp5ebbrE22.00:
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
03/09/2002 | 2055 | 03/11/2002 | 2005 |
03/13/2002 | 1755 | 03/14/2002 | 1505 |
Subject: | SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems |
DataStreams: | sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1, sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1, sgpthwapsC1.b1 |
Description: | Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems. |
Measurements: | sgpthwapsC1.b1:
sgpthwapsB5.00:
sgpthwapsC1.a1:
sgpthwapsB6.a1:
sgpthwapsC1.00:
sgpthwapsB6.b1:
sgpthwapsB1.00:
sgpthwapsB1.b1:
sgpthwapsB1.a1:
sgpthwapsB6.00:
sgpthwapsB5.a1:
sgpthwapsB5.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 |
---|---|---|---|
10/15/2003 | 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 |
---|---|---|---|
12/04/2003 | 1605 | 12/23/2003 | 1940 |
Subject: | SGP/THWAPS/B5 - T/RH Sensor Failure |
DataStreams: | sgpthwapsB5.b1 |
Description: | The T/H sensor cable was chewed in half by a rodent. Cable was replaced and reasonable data resumed after the transmitter was adjusted 12/23. |
Measurements: | sgpthwapsB5.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 |
---|---|---|---|
12/13/2003 | 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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
02/03/2005 | 2315 | 02/16/2005 | 1850 |
Subject: | SGP/THWAPS/B5 - Temperature Sensor failure |
DataStreams: | sgpthwapsB5.b1 |
Description: | Temperature readings exceed 50 deg C. Temperature sensor failed and was replaced. |
Measurements: | sgpthwapsB5.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 | 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 |
---|---|---|---|
02/03/2005 | 0000 | 02/03/2005 | 2359 |
Subject: | SGP/THWAPS/B5 - Wind Data Suspect |
DataStreams: | sgpthwapsB5.b1 |
Description: | Wind speed and direction data intermittently low throughout time period due to icing on sensor. |
Measurements: | sgpthwapsB5.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 |
---|---|---|---|
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 |
---|---|---|---|
09/21/1999 | 0000 | 07/31/2005 | 1714 |
Subject: | SGP/THWAPS/B5 - Minor biases in humidity and saturation vapor pressure |
DataStreams: | sgpthwapsB5.b1 |
Description: | The THWAPS humidity sensor output was scaled so that the instrument output voltage range (0-1VDC) represented 0-100 %RH. Comparisons with the co-located chilled mirror sensor at the CF suggested that the THWAPS RH sensor was reading artifically low at high humidities because of this 100 %RH maximum. The scaling of the system was changed so that 0-1 VDC now represents 0-110 %RH. This resulted in a slight loss of precision in the measurements, but since the RH measurement is only accurate to 2-3 %RH at best, this isn't a significant problem. The saturation vapor correction when temps are below 0C contained an error in the multiplier. The incorrect multiplier only equates to an error of 0.01 kPa which is less than the stated uncertainty of the measurement (+/- 0.035 kPa). |
Measurements: | sgpthwapsB5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2005 | 2230 | 01/12/2005 | 1830 |
Subject: | SGP/ECOR/E5 - Missing data |
DataStreams: | sgp30ecorE5.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgp30ecorE5.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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
06/14/2006 | 2130 | 06/17/2006 | 1030 |
Subject: | SGP/ECOR/E5 - CO2 and Water Vapor Fluxes and Means Incorrect |
DataStreams: | sgp30ecorE5.b1 |
Description: | The LI-7500 at E5 ECOR did not putting out data during this period. Therefore, CO2 and H2O fluxes and means were incorrect during the period. |
Measurements: | sgp30ecorE5.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 |
---|---|---|---|
01/14/2007 | 0000 | 01/18/2007 | 1010 |
Subject: | SGP/THWAPS/B5 - Wind Speed and Direction Data Incorrect |
DataStreams: | sgpthwapsB5.b1 |
Description: | Wind speed and direction data were incorrect as the sensor was frozen. |
Measurements: | sgpthwapsB5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/2007 | 1900 | 02/23/2007 | 2330 |
Subject: | SGP/ECOR/E5 - Reprocess: Time shifted -7 hours |
DataStreams: | sgpecorE5.00, sgp30ecorE5.b1 |
Description: | An inadvertant power outage caused the ECOR program to shut down abnormally. When power was restored, the timestamps on the ECOR files were 7 hours behind the correct time and the site ID was not accessed from the ECOR configuration file resulting in site ID (05) being replaced with "AN". These conditions caused the ECOR files to be unrecognizable and therefore are presently missing in the Archive. Correction of the timestamp and ID in the files should allow them to be processed and added to the Archive. |
Measurements: | sgpecorE5.00:
sgp30ecorE5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2007 | 0400 | 04/26/2007 | 1630 |
Subject: | SGP/EBBR/E22 - Wind Direction Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Wind direction was flat-lining at 135 degrees and occasionally changed to 0.4 degrees. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/20/2005 | 1930 | 12/14/2005 | 1930 |
04/18/2007 | 1930 | 05/17/2007 | 1815 |
Subject: | SGP/ECOR/E5 - Flux Measurements Incorrect |
DataStreams: | sgp30ecorE5.b1 |
Description: | The ECOR datastream was corrupted; this happens when the ECOR program produces a datastream of the wrong length (i.e., leaves one or more measurements out). Fluxes and some other measurements are incorrect. Note: Mentor reports reprocessing will not correct this problem. |
Measurements: | sgp30ecorE5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/16/2007 | 0300 | 12/12/2007 | 2030 |
Subject: | SGP/ECOR/E5 - Flux Data Incorrect |
DataStreams: | sgp30ecorE5.b1 |
Description: | CO2 flux (lv_e) and latent heat flux (fc) were incorrect because the sonic anemometer was not working. |
Measurements: | sgp30ecorE5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2007 | 0630 | 08/01/2007 | 2200 |
Subject: | SGP/EBBR/E22 - H and LE Incorrect |
DataStreams: | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Soil Heat Flow 1 bounced around and went offscale at times, resulting in the EBBR program setting sensible and latent heat fluxes to 9999es. The problem ended during a PM visit, possibly because of routine checks and tightening of leads in terminal strips. |
Measurements: | sgp30ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/17/2007 | 1920 | 10/11/2007 | 1620 |
Subject: | SGP/THWAPS/B5 - Reprocess: RH values 10% Above Actual |
DataStreams: | sgpthwapsB5.b1 |
Description: | The T/RH probe was replaced with a recently calibrated sensor. The newly installed probe did not have the correct span 0-110% RH for output. This caused the readings to artificially high by 10%. |
Measurements: | sgpthwapsB5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2007 | 2340 | 12/11/2007 | 1150 |
Subject: | SGP/THWAPS/B5 - Wind Data Incorrect Due to Icing |
DataStreams: | sgpthwapsB5.b1 |
Description: | An ice storm caused the wind data from the RM Young wind sensor to be incorrect. In many instances it was frozen and unmoving, at times it measured values but those are extremely suspect. |
Measurements: | sgpthwapsB5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/16/2009 | 0400 | 04/01/2009 | 1730 |
04/06/2009 | 0400 | 04/06/2009 | 1730 |
04/24/2009 | 1400 | 04/29/2009 | 2230 |
Subject: | SGP/ECOR/E5 - Incorrect Sensible and Latent Heat Fluxes |
DataStreams: | sgp30ecorE5.b1 |
Description: | Starting at approximately 4:00 GMT on 02/16, the ECOR suffered from the "garbled" data condition, a result of a serial communication failure. All sensible and latent heat flux measurements are incorrect during this condition. |
Measurements: | sgp30ecorE5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/26/2009 | 1845 | 01/28/2009 | 1810 |
Subject: | SGP/EBBR/E22 - Wind Speed Incorrect |
DataStreams: | sgp5ebbrE22.b1, sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | The wind speed sensor was frozen stopped by freezing rain. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/1997 | 0000 | 04/21/2000 | 1640 |
Subject: | SGP/EBBR/E22 - Reprocess: E22 Soil Moisture Values Off End of Calibration at High Soil |
DataStreams: | sgp15ebbrE22.b1, sgp30ebbrE22.b1 |
Description: | Intermittently, since November 1997 soil moisture probes 1, 2, and 3 indicate small positive or else negative values when soil moisture is high (greater than 35%). This situation is similar to that at the Cement EBBR, although the soil at Cordell is not capable of holding as much water as that at Cement. The cause of the problem is inadequate range in the calibration curve equation. Very high soil moisture cannot be obtained with the calibration soil used by REBS. The soil moisture equations could be manipulated to allow larger soil moistures to be calculated. However, the infrequency of occurence does not justify doing so. 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 moistures 1 and 2 are incorrect, ave_shf = (g3 + g4 + g5)/3 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), If soil moistures 1, 2, and 3 are incorrect, ave_shf = (g4 + g5)/2 e = -(q + ave_shf)/(1 +bowen) h = -(e + ave_shf +q), etc. |
Measurements: | sgp30ebbrE22.b1:
sgp15ebbrE22.b1:
|