DQR ID | Subject | Data Streams Affected |
---|---|---|
D040126.5 | SGP/SWATS/E8 - Sensor failure, 15cm W | sgpswatsE8.b1 |
D040213.2 | SGP/SWATS/E8 - Sensor failure, 15cm E | sgpswatsE8.b1 |
D081024.4 | SGP/SWATS/E8 - Sensor failure, 35cm W | sgpswatsE8.b1 |
D090807.1 | SGP/SWATS/E8 - Sensor failure, 60cm W | sgpswatsE8.b1 |
D970711.3 | SGP/SWATS/E8 - Sensor failure, 15cm W | sgpswatsE8.b1 |
D970711.4 | SGP/SWATS/E8 - Incorrect soil moisture | sgpswatsE8.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/05/2002 | 0500 | 11/10/2009 | 1300 |
Subject: | SGP/SWATS/E8 - Sensor failure, 15cm W |
DataStreams: | sgpswatsE8.b1 |
Description: | The temperature rise readings from the 15-cm depth on the west profile are incorrect. This also causes the matric potential and water content data to be incorrect. Instrument removed from service 20091110. |
Measurements: | sgpswatsE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/13/2004 | 0700 | 02/14/2004 | 0700 |
Subject: | SGP/SWATS/E8 - Sensor failure, 15cm E |
DataStreams: | sgpswatsE8.b1 |
Description: | The temperature rise readings from the 15-cm depth on the east profile are incorrect. This also causes the matric potential and water content data to be incorrect. |
Measurements: | sgpswatsE8.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 |
---|---|---|---|
07/30/2009 | 0200 | 11/10/2009 | 1300 |
Subject: | SGP/SWATS/E8 - Sensor failure, 60cm W |
DataStreams: | sgpswatsE8.b1 |
Description: | At 2:00 GMT on 07/30 all measurements from the 60 cm W sensor began reporting as -9999. The sensor has failed. This EF site is scheduled to be decommissioned in the near future. Instrument removed from service 20091110. |
Measurements: | sgpswatsE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/21/1997 | 0107 | 06/18/1997 | 1950 |
Subject: | SGP/SWATS/E8 - Sensor failure, 15cm W |
DataStreams: | sgpswatsE8.b1 |
Description: | The 15cm West profile sensor was not producing reasonable values of matric potential or water content. Site ops found and tighten a loose wire. |
Measurements: | sgpswatsE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/1997 | 0507 | 06/18/1997 | 1950 |
Subject: | SGP/SWATS/E8 - Incorrect soil moisture |
DataStreams: | sgpswatsE8.b1 |
Description: | Sensors in both profiles and at all depths were not being heated properly (temperature rise is too small). As a result, all matric potential and water content data are invalid also. |
Measurements: | sgpswatsE8.b1:
|