| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D020920.4 | SGP/SWATS/E1 - Reprocess: Wrong Calibration | sgpswatsE1.00, sgpswatsE1.a1, sgpswatsE1.b1 |
| D040525.16 | SGP/SWATS/E19 - Metadata Errors | sgpswatsE19.a1, sgpswatsE19.b1, sgpswatspcpE19.a1 |
| D050503.12 | SGP/SWATS/E24 - Reprocess: Changed Depth Dimension | sgpswatsE24.b1 |
| D081024.4 | SGP/SWATS/E8 - Sensor failure, 35cm W | sgpswatsE8.b1 |
| D081027.5 | SGP/SWATS/E19 - Sensor failure, 60cm E | sgpswatsE19.b1 |
| D081210.7 | SGP/SWATS/E5 - Sensor failure, 125cm W | sgpswatsE5.b1 |
| D100302.2 | SGP/SWATS/E18 - Unknown | sgpswatsE18.b1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/25/1996 | 0000 | 08/02/2000 | 1450 |
| Subject: | SGP/SWATS/E1 - Reprocess: Wrong Calibration |
| DataStreams: | sgpswatsE1.00, sgpswatsE1.a1, sgpswatsE1.b1 |
| Description: | Two sensor connections were switched. The East 125-cm sensor was plugged into the East 85-cm sensor's connection, and vice versa. Technicians corrected the problem on 1440 GMT, 08/02/00, and returned the instrument to service 10 minutes later at 1450 GMT. As the datalogger was confusing the 2 sensors, incorrect calibrations were applied. The correct calibrations can be applied to the raw data to obtain the correct temperature rises, soil moisture, etc. However, this is a rather large amount of work to apply toward just 1 measurement profile. This has been identified as a medium priority reprocessing task. |
| Measurements: | sgpswatsE1.a1:
sgpswatsE1.00:
sgpswatsE1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/12/1997 | 0107 | 05/06/2003 | 2359 |
| Subject: | SGP/SWATS/E19 - Metadata Errors |
| DataStreams: | sgpswatsE19.a1, sgpswatsE19.b1, sgpswatspcpE19.a1 |
| Description: | The latitude, longitude and altitude of the El Reno (E19) site were incorrectly entered into the ARM database. The correct location of the SWATS.E19 instrument is: Lat: 35.557N Lon: 98.017W Alt: 421m |
| Measurements: | sgpswatsE19.b1:
sgpswatspcpE19.a1:
sgpswatsE19.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 08/28/1996 | 0000 | 04/19/2005 | 2359 |
| Subject: | SGP/SWATS/E24 - Reprocess: Changed Depth Dimension |
| DataStreams: | sgpswatsE24.b1 |
| Description: | The dimension "depth" in the netCDF files was incorrectly reported as 8, and has been changed. Newer files with the correct smaller depth dimension do not have extra placeholder values and thus are smaller in size. |
| Measurements: | sgpswatsE24.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/20/1999 | 1700 | 11/10/2009 | 1300 |
| Subject: | SGP/SWATS/E8 - Sensor failure, 35cm W |
| DataStreams: | sgpswatsE8.b1 |
| Description: | The sensor installed at 35 cm at the west profile has produced questionable data ince it was installed back in 1996. Once the sensor began to stabilize at 17:00 GMT on 07/20/99, it has produced questionable or incorrect values of temperature rise. From 07/20/99 to the present date, 35cm W temperature rise values have stayed within a range of approximately 0.8-2.0 C, while the sensor from the 35cm E profile has produced an approximate range of 1.5-4.0 C. In addition, the calibration for this sensor is so bad it is not possible to correct it using field data. The range of temperature rise values produced by this sensor is too limited to reliably re-calibrate the instrument. Under the old ARM calibration for SWATS, the calibrated reference temperature change should fall within a range of 1.45-4.00 C (the new range is 1.38-3.96 C). For this sensor, the reference temperature change has fallen within an approximate range of 0.2-1.7 C and the calibration is actually adjusting the trise measurements in the wrong direction. Therefore, all temperature rise, matric potential and water content data are all highly suspect from the 35cm W sensor. The soil temperature data appear to be OK. Instrument removed from service 20091110. |
| Measurements: | sgpswatsE8.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/28/2000 | 0300 | 12/11/2008 | 2000 |
| Subject: | SGP/SWATS/E19 - Sensor failure, 60cm E |
| DataStreams: | sgpswatsE19.b1 |
| Description: | The 60cm East profile sensor began reporting temperature rise values near 0 C. This problem continued until the old profile of sensors was disconnected and the new set of sensors was connected. The soil temperature measure was not impacted by this problem. |
| Measurements: | sgpswatsE19.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/07/1999 | 0000 | 11/02/2009 | 1300 |
| Subject: | SGP/SWATS/E5 - Sensor failure, 125cm W |
| DataStreams: | sgpswatsE5.b1 |
| Description: | Both the temperature rise and soil temperature measures of the 125-cm W profile are reported as -9999 since 10/07/99. This sensor has been essentially dead since then, and all associated variables are impacted. Instrument removed from service 20091102. |
| Measurements: | sgpswatsE5.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 01/01/1999 | 0000 | 09/30/2003 | 1500 |
| Subject: | SGP/SWATS/E18 - Unknown |
| DataStreams: | sgpswatsE18.b1 |
| Description: | The data for site E18 appears to be incorrect and this fact is not completely indicated by QC flags. |
| Measurements: | sgpswatsE18.b1:
|