DQR ID | Subject | Data Streams Affected |
---|---|---|
D050205.4 | SGP/SIRS/E18 - Possible PSP dome contamination | sgpsirs20sE18.a0, sgpsirsE18.00, sgpsirsE18.b1 |
D060630.24 | SGP/SIRS/E18 - Reprocessed: Longwave Calibration error | sgpsirsE18.b1 |
D061115.2 | SGP/SIRS/E18 - Upwelling SW cable severed | sgpsirs20sE18.a0, sgpsirsE18.00, sgpsirsE18.b1 |
D070130.2 | SGP/SIRS/E18 - Noise in upwelling longwave data | sgpsirs20sE18.a0, sgpsirsE18.b1 |
D071221.2 | SGP/SIRS/E18 - Instrument noise problem | sgpsirs20sE18.a0, sgpsirsE18.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/03/2005 | 1200 | 02/15/2005 | 2250 |
Subject: | SGP/SIRS/E18 - Possible PSP dome contamination |
DataStreams: | sgpsirs20sE18.a0, sgpsirsE18.00, sgpsirsE18.b1 |
Description: | Downwelling shortwave hemispheric (DSH) measurements did not agree with derived DSH readings during the morning hours up to 1500GMT each clear day. PM cleaning on 2/16 2250 revealed nothing other than dirty water spots. A dirty or ice covered PSP dome may have been the cause, clearing itself before the PM crew arrived. |
Measurements: | sgpsirs20sE18.a0:
sgpsirsE18.b1:
sgpsirsE18.00:
|
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:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/2006 | 0100 | 11/20/2006 | 2300 |
Subject: | SGP/SIRS/E18 - Upwelling SW cable severed |
DataStreams: | sgpsirs20sE18.a0, sgpsirsE18.00, sgpsirsE18.b1 |
Description: | The Upwelling Shortwave signal was exceeding physical limits. Ops reported the upwelling shortwave cable was damaged by rodents. The cable was repaired and returned to service. |
Measurements: | sgpsirs20sE18.a0:
sgpsirsE18.b1:
sgpsirsE18.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/18/2007 | 2230 | 07/24/2007 | 1400 |
Subject: | SGP/SIRS/E18 - Noise in upwelling longwave data |
DataStreams: | sgpsirs20sE18.a0, sgpsirsE18.b1 |
Description: | After restart due to ice storm the upwelling longwave case and dome thermistors experienced intermittent noise. Last seen 7/24/2007, the noise is intermittent and can last several days. When noise is not apparent, upwelling longwave measurements appear normal. Only using upwelling longwave data that has been processed with ARMs qcrad VAP during this time period. Or, disregard upwelling longwave data during this time. |
Measurements: | sgpsirs20sE18.a0:
sgpsirsE18.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/12/2007 | 1030 | 01/02/2008 | 2240 |
Subject: | SGP/SIRS/E18 - Instrument noise problem |
DataStreams: | sgpsirs20sE18.a0, sgpsirsE18.b1 |
Description: | Starting May 12th 2007 DIR experiencing persistent, intermittent data dropouts and noise. PM found a damaged PIR cable and repaired 01/02/08 2240GMT. Noise seems to be unbiased and dropouts are beyond QC limits making QC flags a possible option in filtering for good data. However, using data during this period is not recommended. |
Measurements: | sgpsirsE18.b1:
sgpsirs20sE18.a0:
|