| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D060630.39 | NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error | nsagndrad60sC1.b1 |
| D071025.3 | NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/04/2004 | 1600 | 12/21/2005 | 1855 |
| Subject: | NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error |
| DataStreams: | nsagndrad60sC1.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 are
being reprocessing to remove the calibration bias. Note, this also affected standard
deviation, maximum and minimum data fields. |
| Measurements: | nsagndrad60sC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/04/2007 | 0130 | 10/25/2007 | 2149 |
| Subject: | NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient |
| DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
| Description: | Installed Gndrad PSP (upwelling shortwave hemispheric irradiance) had calibration coefficient RS applied when it should have used Rsc. ARM is using IR corrected coefficients Rsc@45 and CFc@45 for PSPs deployed at all facilities. PSP #32012F3 should use RSc@45=109.39 and not Rs@45=110.97. Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by: US(new) = (US(old) / 110.97 ) * 109.39 Reprocessing completed March 2008. |
| Measurements: | nsagndrad20sC1.a0:
nsagndrad60sC1.b1:
|