DQR ID | Subject | Data Streams Affected |
---|---|---|
D040405.2 | SGP/SIRS/E7 - PSP dome contamination | sgpsirs20sE7.a0, sgpsirsE7.b1 |
D040621.3 | SGP/SIRS/E7 - Reprocessed: Corrected downwelling longwave calibrations | sgpsirsE7.b1 |
D040831.2 | SGP/SIRS/E7 - Reprocess: Incorrect shortwave radiometer calibration coefficients | sgpsirsE7.00, sgpsirsE7.b1 |
D050218.1 | SGP/SIRS/E7 - Reprocessed: Corrected Downwelling Longwave calibrations | sgpsirsE7.b1 |
D050307.3 | SGP/SIRS/E7 - Downwelling Shortwave incorrect | sgpsirsE7.00, sgpsirsE7.b1 |
D050606.1 | SGP/SIRS/E7 - Downwelling longwave incorrect | sgpsirs20sE7.a0, sgpsirsE7.00, sgpsirsE7.b1 |
D060630.15 | SGP/SIRS/E7 - Reprocessed: Longwave Calibration error | sgpsirsE7.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/30/2004 | 1430 | 04/06/2004 | 2100 |
Subject: | SGP/SIRS/E7 - PSP dome contamination |
DataStreams: | sgpsirs20sE7.a0, sgpsirsE7.b1 |
Description: | Values of hemispheric downwelling shortwave radiation differed from derived values by 45 W/m^2 on 03/30 around 1430 GMT under clear sky conditions due to dirt on the dome. Maintenance reported cleaning heavy dust from dome on 04/06 2030 GMT. |
Measurements: | sgpsirs20sE7.a0:
sgpsirsE7.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/20/2004 | 1825 | 06/29/2004 | 1915 |
Subject: | SGP/SIRS/E7 - Reprocessed: Corrected downwelling longwave calibrations |
DataStreams: | sgpsirsE7.b1 |
Description: | While attempting to correct calibration coefficients (see D040831.2) a new datalogger program was loaded which applied the wrong serial number and calibration coefficients to the downwelling longwave measurement. The data were reprocessed in September 2006 with the correct downwelling longwave calibrations and archived on 20061003. |
Measurements: | sgpsirsE7.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2004 | 1845 | 04/20/2004 | 1825 |
Subject: | SGP/SIRS/E7 - Reprocess: Incorrect shortwave radiometer calibration coefficients |
DataStreams: | sgpsirsE7.00, sgpsirsE7.b1 |
Description: | During the pyrgeometer instrument (PIR) changout a datalogger program was loaded with incorrect calibration coefficients for the shortwave instruments. The affected measurements (instruments) were : downwelling diffuse (8-48), upwelling shortwave(PSP), direct normal (NIP) and downwelling shortwave (PSP) Recalculate irradiances by determining original mV signal and reapplying the correct calibration coefficients. For each one minute irradiance value perform the following calculations by instrument: DD(corrected) = (DD/107.24)*108.50 US(corrected) = (US/113.19)*110.10 NIP(corrected)= (NIP/120.17)*122.26 DS(corrected) = (DS/118.46)*122.56 |
Measurements: | sgpsirsE7.b1:
sgpsirsE7.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/02/2004 | 2045 | 02/22/2005 | 2050 |
Subject: | SGP/SIRS/E7 - Reprocessed: Corrected Downwelling Longwave calibrations |
DataStreams: | sgpsirsE7.b1 |
Description: | Incorrect DIR calibration coeffs and serial numbers were applied to the data from 11/02/2004 when the shortwave instruments were changed out. Field techs corrected the program during longwave instrument replacement on 2/22/2005. The data were reprocessed in September 2006 to apply the correct calibrations. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE7.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2005 | 2200 | 04/05/2005 | 1950 |
Subject: | SGP/SIRS/E7 - Downwelling Shortwave incorrect |
DataStreams: | sgpsirsE7.00, sgpsirsE7.b1 |
Description: | Downwelling shortwave values dropped off to unrealistic values frequently at this site (usually between 1600 GMT and 0000 GMT). SGP techs found this was due to a bad multiplexer and it was replaced 04/05/2005 1950GMT along with the downwelling shortwave cable. |
Measurements: | sgpsirsE7.b1:
sgpsirsE7.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2005 | 1950 | 04/19/2005 | 2100 |
Subject: | SGP/SIRS/E7 - Downwelling longwave incorrect |
DataStreams: | sgpsirs20sE7.a0, sgpsirsE7.00, sgpsirsE7.b1 |
Description: | During maintenance to correct a problem with the downwelling shortwave data, the downwelling longwave instrument wiring was not properly fastened resulting in incorrect downwelling longwave hemispheric data. |
Measurements: | sgpsirs20sE7.a0:
sgpsirsE7.b1:
sgpsirsE7.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2004 | 2000 | 02/07/2006 | 2005 |
Subject: | SGP/SIRS/E7 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE7.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in February 2004. 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: | sgpsirsE7.b1:
|