DQR ID | Subject | Data Streams Affected |
---|---|---|
D060630.8 | SGP/SIRS/C1 - Reprocessed: Longwave Calibration error | sgpsirsC1.b1 |
D061121.2 | SGP/SIRS/C1 - Upwelling SW cable problem | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
D070306.1 | SGP/SIRS/C1 - Reprocess: Incorrect calibration coefficients | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2003 | 1950 | 02/16/2006 | 1901 |
Subject: | SGP/SIRS/C1 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsC1.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in December 2003. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/13/2006 | 0900 | 01/23/2007 | 1930 |
Subject: | SGP/SIRS/C1 - Upwelling SW cable problem |
DataStreams: | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
Description: | Starting 11/13/2006, the C1 SIRS Upwelling Shortwave (up_short_hemisp) started to show large differences in comparison to co-located E13 SIRS and C1 IRT25m. After much troubleshooting and gnashing of teeth it was discovered that rodents had chewed through the instrument cables at the bottom of the tilt tower. Cables were replaced 01/23/2007 1930GMT. |
Measurements: | sgpsirsC1.b1:
sgpsirsC1.00:
sgpsirs20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/03/2006 | 1509 | 03/06/2007 | 1610 |
Subject: | SGP/SIRS/C1 - Reprocess: Incorrect calibration coefficients |
DataStreams: | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
Description: | Incorrection calibration coefficients were used in the C1/SIRS datalogger program. The PSP-US (upwelling shortwave global hemispheric), 30943F3 should be 126.93 not 129.93 [W/m2/mV]. |
Measurements: | sgpsirsC1.b1:
sgpsirsC1.00:
sgpsirs20sC1.a0:
|