DQR ID | Subject | Data Streams Affected |
---|---|---|
D011127.31 | SGP EBBR E20 - E20 EBBR Data Incorrect During 6 Month Checks | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D011218.13 | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Data Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D011218.14 | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D020716.16 | SGP/EBBR/E20 - 6 Month Checks | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D020717.40 | SGP/EBBR/E20 - AEM Hung | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D020717.42 | SGP/EBBR/E20 - Battery Voltage Low | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
D020717.43 | SGP/EBBR/E20 - Pressure Almost Constant | sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D020717.45 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #3 Incorrect During Sensor Changeout | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D020717.46 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 Has a Negative Offset | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D020717.47 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #4 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D020717.48 | SGP/EBBR/E20 - Measurements Zero | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
D020717.49 | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D020717.50 | SGP/EBBR/E20 - Measurements Incorrect During Sensor Changeout | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D020717.51 | SGP/EBBR/E20 - Measurements Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
D020726.1 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 and #4 incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.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 |
D030110.25 | SGP/EBBR/E20 - Data Incorrect during 6 month checks | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D030117.10 | SGP/EBBR/E20 - Data Zero following logger restarts | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D030117.11 | SGP/EBBR/E20 - REPROCESS: Soil Temperature #2 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030117.12 | SGP/EBBR/E20 - Change of Energy Storage Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030117.13 | SGP/EBBR/E20 - Battery voltage low | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D030117.14 | SGP/EBBR/E20 - Wind speed and direction frozen | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE2.a1 |
D030117.18 | SGP/EBBR/E20 - AEM Hung between Home Positions | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D030117.19 | SGP/EBBR/E20 - REPROCESS: Heat Flow #3 and #5 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030117.2 | SGP/EBBR/E20 - Data incorrect during instrument maintenance | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D030117.20 | SGP/EBBR/E20 - REPROCESS: Soil Heat Flow #5 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030117.22 | SGP/EBBR/E20 - REPROCESS: Soil Temperature #1 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030117.25 | SGP/EBBR/E20 - REPROCESS: Soil Temperature #3 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030117.3 | SGP/EBBR/E20 - Resistance-based Measurements Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D030117.8 | SGP/EBBR/E20 - REPROCESS: Net Rad Coefficients Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
D030121.1 | SGP/EBBR/E20 - REPROCESS: Soil Temperature #1 and Soil Heat Flow #5 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030711.10 | SGP/EBBR/E20 - RHtop Zero | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030711.8 | SGP/EBBR/E20 - Soil Heat Flow#5 Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D030711.9 | SGP/EBBR/E20 - Soil Storage Incorrect After Startup | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
D050719.13 | SGP/EBBR/E20 - Improved EBBR CR10 Program | sgp30ebbrE20.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/04/2001 | 1700 | 04/04/2001 | 1736 |
10/17/2001 | 1500 | 10/17/2001 | 1601 |
Subject: | SGP EBBR E20 - E20 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/2001 | 1245 | 04/02/2001 | 1701 |
04/03/2001 | 0215 | 04/03/2001 | 1501 |
04/06/2001 | 1115 | 04/06/2001 | 1501 |
04/07/2001 | 0345 | 04/07/2001 | 1401 |
04/23/2001 | 1045 | 04/23/2001 | 1331 |
Subject: | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Data Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | The indicated data was incorrect because the battery voltage was low. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2001 | 1500 | 10/17/2001 | 0201 |
Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | During the indicated period, TS #3 was large negative or positive or offscale. Average soil heat flow, sensible heat flux, and latent heat flux were incorrect when TS #3 was incorrect. Inspect the 15 and 30 minute TS #3 data to determine the times of incorrect data. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2002 | 1910 | 05/01/2002 | 1946 |
Subject: | SGP/EBBR/E20 - 6 Month Checks |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/28/2001 | 2045 | 01/23/2002 | 1801 |
Subject: | SGP/EBBR/E20 - AEM Hung |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | The automatic exchange mechanism frequently hung in one position. The home signals and automated qc in the netcdf data files indicate when this occurred. Bowen ratio, sensible heat flux, and latent heat flux are incorrect for this condition. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/28/2001 | 0045 | 11/28/2001 | 2031 |
02/06/2002 | 2130 | 02/07/2002 | 0331 |
Subject: | SGP/EBBR/E20 - Battery Voltage Low |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
Description: | When the battery voltage is below 10.5 volts, most of the measurements are suspect. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/2001 | 1605 | 11/28/2001 | 2031 |
Subject: | SGP/EBBR/E20 - Pressure Almost Constant |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | During the indicated period the pressure went to an almost constant 102 to 105 kPa. This occurred after the replacement of another sensor. The incorrect pressure values affect the sensible and latent heat flux calculations. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2001 | 1915 | 12/12/2001 | 2031 |
Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #3 Incorrect During Sensor Changeout |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil heat flow #3 measurements were incorrect during it's replacement. 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 + g5)/2 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) Note: during the time period referenced here, soil heat flow #4 and #2 were also incorrect. This quality information is documented in D020717.46, D020717.47 and D020726.1. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/04/2001 | 0000 | 12/12/2001 | 1914 |
01/12/2002 | 0315 | 01/13/2002 | 2131 |
01/17/2002 | 0915 | 01/21/2002 | 0901 |
02/09/2002 | 0115 | 02/12/2002 | 0731 |
02/20/2002 | 1645 | 02/20/2002 | 1831 |
Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 Has a Negative Offset |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil heat flow #2 measurements had a negative offset. Negative values were too small and negative values occurred when positive values should have. This can occur when there is a poor wire connection or a J-panel over-voltage protection device has failed. 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: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/24/2001 | 0532 | 12/27/2001 | 1901 |
Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #4 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil heat flow #4 was incorrect because it's wires were loose from the connection terminals. 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 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/2001 | 1600 | 11/14/2001 | 1601 |
11/27/2001 | 1800 | 11/27/2001 | 1801 |
05/15/2002 | 1700 | 05/15/2002 | 1701 |
05/29/2002 | 1830 | 05/29/2002 | 1901 |
Subject: | SGP/EBBR/E20 - Measurements Zero |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
Description: | Most measurements were zero during the indicated periods. This often happens for the first reported data time after a CR10 datalogger restart. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2002 | 2015 | 02/22/2002 | 2101 |
02/23/2002 | 1745 | 02/23/2002 | 1801 |
02/24/2002 | 0045 | 02/25/2002 | 0201 |
03/05/2002 | 2015 | 03/06/2002 | 0201 |
03/06/2002 | 1915 | 03/07/2002 | 1901 |
Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil temperature 3 was incorrect during the indicated periods. 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 + g2 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2002 | 1745 | 02/20/2002 | 1901 |
Subject: | SGP/EBBR/E20 - Measurements Incorrect During Sensor Changeout |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | The replacement of soil heat flow 2 caused the loss of initial soil temperature values used in the calculation of CES, G, C, ave_shf, bowen, e, and h. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/27/2001 | 1845 | 12/27/2001 | 1901 |
05/15/2002 | 1715 | 05/15/2002 | 1731 |
Subject: | SGP/EBBR/E20 - Measurements Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
Description: | Many measurements were incorrect because of the lack of an initial 15 minute value to use for gradient or soil change of energy storage calculations. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2001 | 2032 | 12/24/2001 | 0531 |
Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 and #4 incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil heat flow #2 measurements had a negative offset. Negative values were too small and negative values occurred when positive values should have. This can occur when there is a poor wire connection or a J-panel over-voltage protection device has failed. Soil heat flow #4 was incorrect because it's wires were loose from the connection terminals. 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 + g5)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
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: | sgp30ebbrE8.b1:
sgp30ebbrE4.b1:
sgp30ebbrE9.b1:
sgp30ebbrE18.b1:
sgp30ebbrE26.b1:
sgp30ebbrE13.b1:
sgp30ebbrE7.b1:
sgp30ebbrE12.b1:
sgp30ebbrE19.b1:
sgp30ebbrE20.b1:
sgp30ebbrE22.b1:
sgp30ebbrE2.b1:
sgp30ebbrE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/26/2002 | 1900 | 11/26/2002 | 1930 |
Subject: | SGP/EBBR/E20 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/13/2002 | 1830 | 11/13/2002 | 1859 |
12/11/2002 | 1900 | 12/11/2002 | 1929 |
Subject: | SGP/EBBR/E20 - Data Zero following logger restarts |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | Most of the measurements were zero, which normally happens after a datalogger restart. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/09/2002 | 1705 | 09/18/2002 | 1700 |
Subject: | SGP/EBBR/E20 - REPROCESS: Soil Temperature #2 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil Temperature #2 was incorrect, apparently from am loose wire after replacement of the EBBR unit. The indicated measurements that are calculated using soil temperature are also incorrect. See the work-around below. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/13/2002 | 1900 | 11/13/2002 | 1929 |
12/11/2002 | 2000 | 12/11/2002 | 2029 |
Subject: | SGP/EBBR/E20 - Change of Energy Storage Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Because soil temperature measurements were not available from the beginning of the half hour, the change in soil energy storage could not be calculated and thus is incorrect. There is no fix to this problem. Average Soil Heat Flow, Sensible Heat Flux (h), and Latent Heat Flux (e) can not be calculated using the available, remaining measurements. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/23/2002 | 0215 | 10/30/2002 | 2000 |
Subject: | SGP/EBBR/E20 - Battery voltage low |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
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: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/04/2002 | 1200 | 12/05/2002 | 1630 |
Subject: | SGP/EBBR/E20 - Wind speed and direction frozen |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE2.a1 |
Description: | Wind Speed and Dierction were frozen in place by an ice storm. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE2.a1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/07/2002 | 1630 | 08/07/2002 | 1730 |
Subject: | SGP/EBBR/E20 - AEM Hung between Home Positions |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
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: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/30/2002 | 2030 | 01/08/2003 | 1730 |
Subject: | SGP/EBBR/E20 - REPROCESS: Heat Flow #3 and #5 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil Heat Flow #3 was incorrect because part of the lead wire was cut; apparent vandalism. Soil Heat Flow #5 had been incorrect because of other causes, but was replaced at the same time as #3. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/09/2002 | 1705 | 08/09/2002 | 1730 |
Subject: | SGP/EBBR/E20 - Data incorrect during instrument maintenance |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | Most of the data was incorrect just after the EBBR unit was replaced. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/2002 | 1200 | 12/04/2002 | 0400 |
12/06/2002 | 2000 | 12/07/2002 | 0230 |
12/08/2002 | 0230 | 12/09/2002 | 0500 |
12/09/2002 | 0930 | 12/20/2002 | 1830 |
12/20/2002 | 2100 | 12/21/2002 | 1630 |
12/21/2002 | 1730 | 12/22/2002 | 0100 |
12/22/2002 | 0130 | 12/30/2002 | 2000 |
Subject: | SGP/EBBR/E20 - REPROCESS: Soil Heat Flow #5 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil Heat Flow #5 was incorrect during these periods. See below for a work-around. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/18/2002 | 1900 | 11/18/2002 | 2200 |
11/19/2002 | 1700 | 11/19/2002 | 2200 |
11/20/2002 | 1430 | 11/20/2002 | 2200 |
11/21/2002 | 2000 | 11/21/2002 | 2030 |
11/22/2002 | 1630 | 11/22/2002 | 2000 |
11/23/2002 | 1430 | 11/23/2002 | 2230 |
11/24/2002 | 1700 | 11/24/2002 | 2200 |
11/27/2002 | 2030 | 11/27/2002 | 2300 |
11/28/2002 | 1700 | 11/28/2002 | 2300 |
11/29/2002 | 1330 | 11/29/2002 | 2130 |
12/01/2002 | 1930 | 12/01/2002 | 2030 |
12/02/2002 | 1430 | 12/02/2002 | 2230 |
Subject: | SGP/EBBR/E20 - REPROCESS: Soil Temperature #1 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil Temperature #1 was intermittently incorrect. The cause is unknown. The indicated measurements that are calculated using soil temperature are also incorrect. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/30/2002 | 2030 | 01/08/2003 | 1730 |
Subject: | SGP/EBBR/E20 - REPROCESS: Soil Temperature #3 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil Temperature #3 was incorrect. The cause is apparently vandalism; the probe leads were cut. The indicated measurements that are calculated using soil temperature are also incorrect. DQR D030117.19 already provides the work-around for calculating correct sensible (h) and latent heat (e) fluxes, as soil heat flow #3 and soil heat flow #5 were also incorrect during this period. That work-around is repeated below. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/20/2002 | 1300 | 10/20/2002 | 1500 |
Subject: | SGP/EBBR/E20 - Resistance-based Measurements Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | When the Reference Temperature in the EBBR enclosure is not reported correctly, it affects all resistance-based measurements that are adjusted with the temperature of the reference junction. No work-around is possible for this situation. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/09/2002 | 1730 | 12/11/2002 | 1930 |
Subject: | SGP/EBBR/E20 - REPROCESS: Net Rad Coefficients Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
Description: | The Net Radiometer coefficients were incorrect in the CR10 program when the replacement EBBR unit was installed on 08/09/02. The data can be easily corrected; see the Suggestion area below. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/20/2002 | 1830 | 12/20/2002 | 2100 |
12/21/2002 | 1630 | 12/21/2002 | 1730 |
12/22/2002 | 0100 | 12/22/2002 | 0130 |
Subject: | SGP/EBBR/E20 - REPROCESS: Soil Temperature #1 and Soil Heat Flow #5 Incorrect |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil Temperature #1 and Soil Heat Flow #5 were incorrect during these periods. The indicated calculated measurements are also incorrect. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2003 | 1000 | 02/01/2003 | 1000 |
Subject: | SGP/EBBR/E20 - RHtop Zero |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | The RHtop value in the 30 minute file is zero. 5 and 15 minute files show RHtop correctly. This behavior has been seen infrequently and can probably be attributed to a CR10 communication error. No other data, including the fluxes, are affected. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/2003 | 0000 | 01/08/2003 | 1730 |
Subject: | SGP/EBBR/E20 - Soil Heat Flow#5 Incorrect |
DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | Soil Heat Flow #5 was producing incorrect values. Average soil heat flow, sensible heat flux, and latent heat flux were affected. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/2003 | 2100 | 01/08/2003 | 2100 |
Subject: | SGP/EBBR/E20 - Soil Storage Incorrect After Startup |
DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
Description: | For the half hour data after CR10 datalogger startup, stored soil temperature values do not exist from the beginning of the half hour. Therefore soil heat storage can not be calculated correctly. This affects numerous measurements that are calculated using soil heat storage. |
Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/30/2005 | 1900 |
Subject: | SGP/EBBR/E20 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE20.b1 |
Description: | Effective 20050330.1900, 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: | sgp30ebbrE20.b1:
|