DQR ID | Subject | Data Streams Affected |
---|---|---|
D010403.10 | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect | sgp15ebbrE13.b1, sgp30ebbrE13.b1 |
D010413.2 | SGP/EBBR/E13 - E13 EBBR Soil Heat Flow #4 Incorrect | sgp15ebbrE13.b1, sgp30ebbrE13.b1 |
D010605.5 | SGP EBBR E13 - E13 EBBR Soil T #4 Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
D011127.27 | SGP EBBR E13 - E13 EBBR Data Incorrect During 6 Month Checks | sgp5ebbrE13.b1, sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
D020129.10 | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil heat Flows #1 and #2 Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
D020129.11 | SGP EBBR E13 - E13 EBBR Data Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020129.12 | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
D020129.13 | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
D020129.2 | SGP EBBR E13 - E13 EBBR AEM in Mid Position | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020129.3 | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020129.4 | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset or AEM in Mid Position | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020129.5 | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020129.7 | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020129.8 | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
D020129.9 | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
D020131.13 | SGP/EBBR/E13 - Left T/RH Probe Temperature Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020214.1 | SGP/EBBR/E13 - Left Humidity Probe Temperature Incorrect | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020214.2 | SGP/EBBR/E13 - Data incorrect during maintenance | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020214.5 | SGP/EBBR/E13 - Data Incorrect During 6 Month Checks | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
D020716.12 | SGP/EBBR/E13 - 6 Month Checks | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
D020717.13 | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 Incorrect | sgp30ebbrE13.b1 |
D020717.14 | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #2 Incorrect | sgp30ebbrE13.b1 |
D020717.15 | SGP/EBBR/E13 - Wrong CR10 Program Installed | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.00, sgp5ebbrE13.b1 |
D020717.16 | SGP/EBBR/E13 - Wind Direction Incorrect | sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
D020717.17 | SGP/EBBR/E13 - AEM Hung up | sgp30ebbrE13.b1, sgp5ebbrE13.b1, sgp15ebbrE13.b1 |
D020726.2 | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 and #2 Incorrect | sgp30ebbrE13.b1 |
D021113.1 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D021113.4 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D030110.34 | SGP/EBBR/E13 - Data Incorrect during 6 month checks | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
D030115.4 | SGP/EBBR/E13 - Wind Speed Stalling at Low Speeds | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
D030115.5 | SGP/EBBR/E13 - REPROCESS: Soil Moisture #1 Offset1 | sgp30ebbrE13.b1 |
D030115.6 | SGP/EBBR/E13 - AEM Jung between Home Positions | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
D030712.17 | SGP/EBBR/E13 - 6 Month Checks | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
D030919.8 | SGP/EBBR/E13 - Water In Net Radiometer; Surface Fluxes are Incorrect | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
D050624.7 | SGP/EBBR/E13 - Improved EBBR CR10 Program | sgp30ebbrE13.b1 |
D061220.8 | SGP/EBBR/E13 - Wind Direction Dependency of Surface Fluxes and General Data Quality Information | sgp30ebbrE13.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/04/2001 | 1730 | 01/04/2001 | 1731 |
Subject: | SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1 |
Description: | The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions. Incorrect Bowen ratio, and latent and sensible heat fluxes resulted. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/13/2000 | 1930 | 01/12/2001 | 2001 |
Subject: | SGP/EBBR/E13 - E13 EBBR Soil Heat Flow #4 Incorrect |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #4 was large positive or negative, but always incorrect during the indicated period. This resulted in overestimates or underestimates of laetnt and sensible heat fluxes and average soil heat flow. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/1999 | 0000 | 03/08/2001 | 1931 |
Subject: | SGP EBBR E13 - E13 EBBR Soil T #4 Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | Soil Temperature #4 floated around, causing average soil heat flow to sometimes be too small (resulting too small a sensible heat flux and too large a latent heat flux) or too large (resulting in too large a sensible heat flux and too small a latent heat flux). Investigation of g4 will indicate when these conditions occurred and the likely effect on sensible and latent heat fluxes. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/20/2001 | 1720 | 04/20/2001 | 1749 |
10/04/2001 | 1835 | 10/04/2001 | 1934 |
Subject: | SGP EBBR E13 - E13 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp5ebbrE13.b1, sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1700 | 01/18/2002 | 0001 |
Subject: | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil heat Flows #1 and #2 Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | Soil Heat Flow probes #1 and #2 were incorrect during the indicated period (and for some time afterward, to be covered in another DQR). Outputs from the probes were typically too large negative or too large positive. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1715 | 10/05/2001 | 1731 |
Subject: | SGP EBBR E13 - E13 EBBR Data Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The 5 and 15 minute data was zero and thus the thirty minute data was also incorrect. This occurs after the restart of an EBBR system, in this case after a recalibration unit changeout. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/08/2001 | 2000 | 10/12/2001 | 1731 |
Subject: | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | The left T/RH Probe Temperature was often incorrect, causing the other indicated measurements to be incorrect also. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/2001 | 1735 | 10/18/2001 | 1601 |
01/06/2002 | 1930 | 01/06/2002 | 2101 |
01/07/2002 | 2330 | 01/07/2002 | 2331 |
01/09/2002 | 0330 | 01/18/2002 | 0001 |
01/05/2002 | 1930 | 01/05/2002 | 1931 |
11/22/2001 | 0130 | 11/25/2001 | 1531 |
01/08/2002 | 1730 | 01/08/2002 | 1801 |
Subject: | SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | The left T/RH Probe Temperature was often incorrect, causing the other indicated measurements to be incorrect also. When the home30 signal had an offset, the top RH probe temperature was incorrect but not the bottom RH probe temperature. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/2001 | 1545 | 12/28/2001 | 1931 |
10/09/2001 | 0245 | 10/09/2001 | 2145 |
Subject: | SGP EBBR E13 - E13 EBBR AEM in Mid Position |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The AEM stopped before reaching the end of it's travel, causing the home signals to be between 0 and 3 during much of this period (therefore the data is colored yellow). All gradient data, sensible heat flux, latent heat flux, and the Bowen ratio are incorrect during this condition. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/28/2001 | 1930 | 01/18/2002 | 0001 |
10/12/2001 | 1315 | 11/25/2001 | 1541 |
Subject: | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The AEM home30 signal is offset by approximately 25; it appears that the electronics of the AEM is adding the home15 and home30 voltages together when the AEM is in the home30 position. All gradient data, sensible heat flux, latent heat flux, and the Bowen ratio are incorrect during this condition. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2001 | 2245 | 10/12/2001 | 1301 |
Subject: | SGP EBBR E13 - E13 EBBR AEM Home 30 Offset or AEM in Mid Position |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The AEM stopped before reaching the end of it's travel, causing the home signals to be between 0 and 3 during part of this period. The AEM home30 signal is offset by approximately 25 during part of this period; it appears that the electronics of the AEM is adding the home15 and home30 voltages together when the AEM is in the home30 position. All gradient data, sensible heat flux, latent heat flux, and the Bowen ratio are incorrect during these conditions. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 10/05/2001 | 1401 |
Subject: | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | This condition occurred most of the time during the indicated period (hence color yellow). The left air temperature was incorrect only when the AEM was in the home 30 position. This only affected the bottom air temperature calculation. However, it made the latent heat flux, sensible heat flux, and Bowen ratio incorrect. The sensor was improperly inserted into the aspirator shield and was pinched between the shield and the T/RH probe. When the AEM was in the home30 position, the aspirator hose position may have caused the sensor to short to ground. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2001 | 0530 | 03/01/2001 | 2356 |
Subject: | SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | This condition occurred most of the time during the indicated period (hence color yellow). The left air temperature was incorrect only when the AEM was in the home 30 position. This only affected the bottom air temperature calculation. However, it made the latent heat flux, sensible heat flux, and Bowen ratio incorrect. The sensor was improperly inserted into the aspirator shield and was pinched between the shield and the T/RH probe. When the AEM was in the home30 position, the aspirator hose position may have caused the sensor to short to ground. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/2001 | 1935 | 03/31/2001 | 2356 |
Subject: | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | Soil Temperature #4 was often incorrect, typically too large negative, during this period, causing other measurements calculated with it to be incorrect also. This was caused by a bad multiplexor channel, which was discovered by the vendor during recalibration of the unit later. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 10/05/2001 | 1401 |
Subject: | SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | Soil Temperature #4 was often incorrect, typically too large negative, during this period, causing other measurements calculated with it to be incorrect also. This was caused by a bad multiplexor channel, which was discovered by the vendor during recalibration of the unit later. |
Measurements: | sgp15ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/2001 | 1545 | 12/28/2001 | 1931 |
Subject: | SGP/EBBR/E13 - Left T/RH Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | During much of the indicated period the Left T/RH Temperature was incorrect. Because the home signal was between 0 and 3, the temperature was incorrect when the AEM was at the bottom position, but was correct when the AEM was at the top position. This was caused by a short created when the sensor was mispositioned in the aspirator housing and enough strain on the cable for it to bring it into contact with the housing in the bottom position. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/18/2002 | 0005 | 01/25/2002 | 2201 |
Subject: | SGP/EBBR/E13 - Left Humidity Probe Temperature Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The left humidity probe temperature was incorrect much of the time, as was the top humidity temperature and vapor pressure. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2002 | 2200 | 01/25/2002 | 2201 |
Subject: | SGP/EBBR/E13 - Data incorrect during maintenance |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The 5, 15, and 30 minute measurements were zero or offscale at 2200 GMT only. Electronic connections were being checked at that time. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2002 | 2010 | 01/25/2002 | 2101 |
Subject: | SGP/EBBR/E13 - Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The measurements were incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/16/2002 | 1855 | 05/16/2002 | 1926 |
Subject: | SGP/EBBR/E13 - 6 Month Checks |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/25/2002 | 2202 | 03/03/2002 | 1129 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #1 was incorrect during the indicated period. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g2 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2002 | 2032 | 05/20/2002 | 2101 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #2 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #2 was incorrect during the indicated period. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1715 | 02/22/2002 | 2131 |
Subject: | SGP/EBBR/E13 - Wrong CR10 Program Installed |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.00, sgp5ebbrE13.b1 |
Description: | An old version 4 program was installed on 5 Oct 01 instead of the correct version 8 program. All of the indicated measurements are suspect. |
Measurements: | sgp5ebbrE13.00:
sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/24/2002 | 0600 | 06/14/2002 | 1431 |
Subject: | SGP/EBBR/E13 - Wind Direction Incorrect |
DataStreams: | sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | The wind direction and sigma_wd was near zero for the indicated times. |
Measurements: | sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/08/2002 | 2300 | 05/09/2002 | 0101 |
05/11/2002 | 1530 | 05/11/2002 | 1601 |
01/18/2002 | 0015 | 03/03/2002 | 0801 |
03/03/2002 | 0815 | 03/08/2002 | 1401 |
03/08/2002 | 1415 | 03/09/2002 | 0931 |
03/09/2002 | 0945 | 03/09/2002 | 2001 |
03/12/2002 | 0115 | 04/12/2002 | 1901 |
04/16/2002 | 1430 | 04/16/2002 | 2001 |
04/16/2002 | 2230 | 04/17/2002 | 0031 |
04/17/2002 | 1530 | 04/17/2002 | 1701 |
04/18/2002 | 1230 | 04/18/2002 | 1231 |
05/06/2002 | 0600 | 05/06/2002 | 1931 |
05/07/2002 | 0000 | 05/07/2002 | 0001 |
05/07/2002 | 0300 | 05/07/2002 | 0301 |
05/07/2002 | 0400 | 05/07/2002 | 0401 |
05/11/2002 | 1900 | 05/11/2002 | 1901 |
03/12/2002 | 0000 | 03/12/2002 | 0101 |
04/17/2002 | 2230 | 04/17/2002 | 2231 |
05/07/2002 | 1700 | 05/07/2002 | 1731 |
Subject: | SGP/EBBR/E13 - AEM Hung up |
DataStreams: | sgp30ebbrE13.b1, sgp5ebbrE13.b1, sgp15ebbrE13.b1 |
Description: | The automatic exchange mechanism hung numerous times, but with various different measurements of home signals. In all cases, temperature and humidity gradients were incorrect; thus the Bowen ratio, sensible heat flux, and latent heat flux are incorrect for the indicated periods. Even when the home 15 and 30 signals were different (but too high) the measurements were incorrect because the program keys off of the home signals, which must be in the proper ranges. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2002 | 1130 | 03/07/2002 | 2031 |
01/18/2002 | 0015 | 01/25/2002 | 2201 |
Subject: | SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 and #2 Incorrect |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Soil Heat Flow #1 and #2 were incorrect during the indicated period. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g3 + g4 + g5)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 06/18/2003 | 2359 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. |
Measurements: | sgp30ebbrE2.b1:
sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE7.b1:
sgp30ebbrE18.b1:
sgp30ebbrE12.b1:
sgp30ebbrE4.b1:
sgp30ebbrE15.b1:
sgp30ebbrE19.b1:
sgp30ebbrE20.b1:
sgp30ebbrE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 1200 | 06/18/2003 | 1159 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the EBBR 30 minute netcdf header have been incorrect from the beginning of processing the data into netcdf files. The correct units are MJ/m^3/C. This does not affect the data quality. (NOTE: The actual begin date of some of these data streams is as early as 7/4/93. This DQR applies to all 30m EBBR data.) |
Measurements: | sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE7.b1:
sgp30ebbrE4.b1:
sgp30ebbrE12.b1:
sgp30ebbrE15.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE8.b1:
sgp30ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/2002 | 2015 | 11/14/2002 | 2045 |
Subject: | SGP/EBBR/E13 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/23/2002 | 0000 | 10/31/2002 | 2130 |
Subject: | SGP/EBBR/E13 - Wind Speed Stalling at Low Speeds |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | Perhaps because of excessive bearing wear, the wind speed sensor had a high starting threshhold with wind speeds below about 2 m/s. Wind speed measurements at all speeds were probably too low. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2001 | 1750 | 02/22/2002 | 2100 |
Subject: | SGP/EBBR/E13 - REPROCESS: Soil Moisture #1 Offset1 |
DataStreams: | sgp30ebbrE13.b1 |
Description: | The wrong offset (1.4656) was used in the calibration coefficients for Soil Moisture Probe #1. The correct offset is 14.656. Sensible and Latent Heat Flux measurements are not significantly affected. |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/18/2002 | 1210 | 09/19/2002 | 0245 |
Subject: | SGP/EBBR/E13 - AEM Jung between Home Positions |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | When the AEM (Automatic Exchange Mechanism) is hung inbetween home positions, the gradients of temperature and relative humidity, and thus sensible and latent heat fluxes, are incorrect. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2003 | 1905 | 05/01/2003 | 1935 |
Subject: | SGP/EBBR/E13 - 6 Month Checks |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/2003 | 1830 | 05/01/2003 | 2000 |
Subject: | SGP/EBBR/E13 - Water In Net Radiometer; Surface Fluxes are Incorrect |
DataStreams: | sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.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: | sgp15ebbrE13.b1:
sgp5ebbrE13.b1:
sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/31/2005 | 2100 |
Subject: | SGP/EBBR/E13 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE13.b1 |
Description: | Effective 20050331.2100, the EBBR.E13 CR10 program was revised to improve the quality of the primary measurements as follows: 1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow. This is applied to the individual soil sets. Measurements outside the limits are rejected and the measurements within the limits are used to calculate the average soil heat flow. 2) Max and min limits are used to determine incorrect values of net radiation, sensible heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal. If AEM signal is outside the limits, h and e are set to 999s. If net radiation is outside the limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s. Virtually no incorrect soil measurement will affect the primary measurements of h and e. By setting h and e to 999s, it can be easily seen that the primary variables are incorrect; no other interpretation is possible. Prior to 20050331, the improved CR10 program was NOT in effect. DQRs have been submitted for known instances of incorrect soil measurements which affected the quality of the primary measurements of h and e. Note: the DQR begin date is the begin date of the sgp30ebbrE13.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE13.a1). |
Measurements: | sgp30ebbrE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/1993 | 1200 | 10/12/2003 | 2330 |
Subject: | SGP/EBBR/E13 - Wind Direction Dependency of Surface Fluxes and General Data Quality |
DataStreams: | sgp30ebbrE13.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): 0-52, 142-194, 328-360 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: | sgp30ebbrE13.b1:
|