DQR ID | Subject | Data Streams Affected |
---|---|---|
D050812.12 | SGP/THWAPS/C1 - Minor bias in saturation vapor pressure | sgpthwapsC1.b1 |
D060630.6 | SGP/IRT/C1 - Reprocess: Longwave Calibration error | sgpirt25mC1.b1 |
D060928.3 | SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry | sgpsondewnpnC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/1999 | 0000 | 08/10/2005 | 1445 |
Subject: | SGP/THWAPS/C1 - Minor bias in saturation vapor pressure |
DataStreams: | sgpthwapsC1.b1 |
Description: | The saturation vapor correction when temps are below 0C contained an error in the multiplier. The incorrect multiplier only equates to an error of 0.01 kPa which is less than the stated uncertainty of the measurement (+/- 0.035 kPa). |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/2004 | 2052 | 02/14/2006 | 2050 |
Subject: | SGP/IRT/C1 - Reprocess: Longwave Calibration error |
DataStreams: | sgpirt25mC1.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: | sgpirt25mC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/2006 | 1728 | 12/31/9999 | 2359 |
Subject: | SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry |
DataStreams: | sgpsondewnpnC1.b1 |
Description: | The output precision of the following variables was increased 20060928 alt changed from 1m to 0.1m dp changed from 0.1degC to 0.01degC pres changed from 0.1 hPa to 0.01 hPa RH changed from 1%RH to 0.01%RH tdry changed from .1degC to 0.01degC Note that the increase in precision does not necessarily imply an increase in accuracy. Users are cautioned to continue to use their best scientific judgement when using these or any other data. |
Measurements: | sgpsondewnpnC1.b1:
|