DQR ID | Subject | Data Streams Affected |
---|---|---|
D030916.6 | SGP/BRS/C1 - low downwelling shortwave readings | sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2 |
D050322.1 | SGP/BRS/C1 - low downwelling shortwave readings | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
D061102.1 | SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement | sgpbrs20sC1.a0, sgpbrsC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/05/2001 | 0000 | 04/17/2003 | 2359 |
Subject: | SGP/BRS/C1 - low downwelling shortwave readings |
DataStreams: | sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2 |
Description: | Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in clear-sky conditions. Corrective maintenance on 12/1/2004 corrected this offset. It is not clear which CM action corrected the problem since the DS instrument cable was grounded to a new location and the DS ventilator fan was found in poor condition and was replaced. Either of these issues could have led to the problem observed in this instrument. |
Measurements: | sgpbrs20sC1.a0:
sgpbrsC1.00:
sgpbrs60sC1.a1:
sgpbrsC1.a2:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/2003 | 0000 | 12/17/2004 | 2030 |
Subject: | SGP/BRS/C1 - low downwelling shortwave readings |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
Description: | Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in clear-sky conditions. Corrective maintenance on 12/17/2004 corrected this offset. It is not clear which CM action corrected the problem since the DS instrument cable was grounded to a new location and the DS ventilator fan was found in poor condition and was replaced. Either of these issues could have led to the problem observed in this instrument. |
Measurements: | sgpbrs20sC1.a0:
sgpbrsC1.00:
sgpbrsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2003 | 1920 | 06/14/2004 | 2359 |
Subject: | SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.b1 |
Description: | On 20031211 the Downwelling LW pyrgeometer was replaced but the calibrations were not updated. Calibrations have been corrected in data beginning 20040615. |
Measurements: | sgpbrs20sC1.a0:
sgpbrsC1.b1:
|