DQR ID | Subject | Data Streams Affected |
---|---|---|
D031020.3 | SGP/SIRS/E18 - Instrument noise problem | sgpsirs20sE18.a0, sgpsirsE18.00, sgpsirsE18.b1 |
D060508.1 | SGP/SIRS/E16 - NIP Instrument Failure | sgpsirs20sE16.a0, sgpsirsE16.b1 |
D060630.23 | SGP/SIRS/E16 - Reprocessed: Longwave Calibration error | sgpsirsE16.b1 |
D060630.24 | SGP/SIRS/E18 - Reprocessed: Longwave Calibration error | sgpsirsE18.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2003 | 1000 | 10/20/2003 | 0000 |
Subject: | SGP/SIRS/E18 - Instrument noise problem |
DataStreams: | sgpsirs20sE18.a0, sgpsirsE18.00, sgpsirsE18.b1 |
Description: | Upwelling longwave data was somewhat noisy during this period. There was a direct relation to the case and dome thermistor measurements for the upwelling longwave PIR (UIR). Data quality does not appear to be greatly affected overall, though instantaneous values had greater than usual variability. The noise disappeared on 10/19. |
Measurements: | sgpsirs20sE18.a0:
sgpsirsE18.b1:
sgpsirsE18.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/2006 | 1543 | 05/12/2006 | 1608 |
Subject: | SGP/SIRS/E16 - NIP Instrument Failure |
DataStreams: | sgpsirs20sE16.a0, sgpsirsE16.b1 |
Description: | The short_direct_normal dropped below MIN value on 4/28/06 resulting in failure of the up_long_hemisp started 3-component test. No data are available from 20060428.1900 through 20060503.21:39. When the data returned, the short_direct normal fluctuated wildly throughout the day, and down_long_hemisp & up_long_hemisp failed the 3-component test. Technicians determined the NIP had failed and replaced it 5/12. Use component method ((global - diffuse)/cos(ZA)) to calculate direct normal. For more information on this summation method please see section 7.2 (Theory of Operation) of the SIRS Handbook: http://www.arm.gov/publications/tech_reports/handbooks/sirs_handbook.pdf |
Measurements: | sgpsirsE16.b1:
sgpsirs20sE16.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/2003 | 1605 | 02/15/2006 | 1533 |
Subject: | SGP/SIRS/E16 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE16.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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: | sgpsirsE16.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/22/2003 | 2200 | 02/14/2006 | 2100 |
Subject: | SGP/SIRS/E18 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE18.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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: | sgpsirsE18.b1:
|