DQR ID | Subject | Data Streams Affected |
---|---|---|
D020905.4 | SGP/IRT10m/C1 - Reprocess: IRT insufficiently insulated | sgpirt10mC1.b1 |
D030306.2 | SGP/IRT25m/C1 - Odd Instantaneous Surface IRT data | sgpirt25mC1.a1 |
D030306.3 | SGP/IRT25m/C1 - Odd Instantaneous Surface IRT data | sgpirt25mC1.a2 |
D030324.1 | SGP/IRT25m/C1 - Reprocess: up_short_hemisp needs -1 multiplier | sgpirt25m20sC1.a0, sgpirt25mC1.00, sgpirt25mC1.a1, sgpirt25mC1.a2 |
D030730.3 | SGP/IRT25m/C1 - error in data logger program | sgpirt25m20sC1.a0, sgpirt25mC1.a1 |
D030917.8 | SGP/IRT10m/IRT25m/C1 - Missing data due to Ice storm and clock problems | sgpirt10mC1.00, sgpirt10mC1.a1, sgpirt25m20sC1.a0, sgpirt25mC1.00, sgpirt25mC1.a1, sgpirt25mC1.a2 |
D031001.1 | SGP/IRT25m/C1 - Corrupt instananeous dome and case temp data | sgpirt25mC1.a1 |
D031117.1 | SGP/IRT25m/C1 - Upwelling bias due to dirt on lens | sgpirt25mC1.00, sgpirt25mC1.a1 |
D060414.6 | SGP/IRT/C1 - changed output range for new datalogger | sgpirt10mC1.a1, sgpirt10mC1.b1 |
D060630.6 | SGP/IRT/C1 - Reprocess: Longwave Calibration error | sgpirt25mC1.b1 |
D060828.2 | SGP/IRT/C1 - UPS failing | sgpirt10mC1.b1 |
D080930.2 | SGP/IRT/C1 - Contamination of 25M lens | sgpirt25mC1.b1 |
D120113.6 | SGP/IRT/C1 - Noisy 10m IRT data | sgpirt10mC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/1997 | 0000 | 12/24/1998 | 1845 |
Subject: | SGP/IRT10m/C1 - Reprocess: IRT insufficiently insulated |
DataStreams: | sgpirt10mC1.b1 |
Description: | The upwelling IRT on the 10m tower was insufficiently insulated to maintain an internal reference temperature above 0 degrees C. Measurements of surface temperature were over-estimated when instrument was below freezing. Data will be reprocessed, but users can correct data using the following correction factor: If T_reference < -5?C, then IRT_corrected = (IRT_original - 32.993K)/0.87238 where T_reference can be estimated with ambient temperature (e.g. inst_up_long_hemisp_dome_temp or inst_up_long_dome_temp from SGP.E13 SIRS) |
Measurements: | sgpirt10mC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/21/2002 | 0000 | 06/05/2003 | 2001 |
Subject: | SGP/IRT25m/C1 - Odd Instantaneous Surface IRT data |
DataStreams: | sgpirt25mC1.a1 |
Description: | The sgpirt25mC1.a1 data for variable inst_sfc_ir_temp look odd. Each day, the first two records and the last 58 records have reasonable data but the remaining records are all zero. This behavior is seen all the way back to 20021121 when the instantaneous variables were added to the sgpirt25mC1.a1 data stream. The other instantaneous data variables do not show a similar pattern and the 60 sec sfc_ir_temp data look reasonable. |
Measurements: | sgpirt25mC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2001 | 2002 | 11/19/2002 | 2359 |
Subject: | SGP/IRT25m/C1 - Odd Instantaneous Surface IRT data |
DataStreams: | sgpirt25mC1.a2 |
Description: | The sgpirt25mC1.a2 data for variable inst_sfc_ir_temp look odd. Each day, the first two records and the last 58 records have reasonable data but the remaining records are all zero. This problem continued in sgpirt25mC1.a1 after the instantaneous data were incorporated into that data stream. |
Measurements: | sgpirt25mC1.a2:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2001 | 2002 | 03/21/2003 | 2024 |
Subject: | SGP/IRT25m/C1 - Reprocess: up_short_hemisp needs -1 multiplier |
DataStreams: | sgpirt25m20sC1.a0, sgpirt25mC1.00, sgpirt25mC1.a1, sgpirt25mC1.a2 |
Description: | The upwelling hemispheric shortwave measurement in the SGP.C1 IRT25m data streams for the time period noted requires a (-1) multiplier to correct for swapped connections at installation. |
Measurements: | sgpirt25m20sC1.a0:
sgpirt25mC1.a1:
sgpirt25mC1.a2:
sgpirt25mC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/2002 | 1700 | 05/21/2003 | 1807 |
Subject: | SGP/IRT25m/C1 - error in data logger program |
DataStreams: | sgpirt25m20sC1.a0, sgpirt25mC1.a1 |
Description: | On 12/16/2002, the logger software for the IRT25m was inappropriately edited. This resulted in incorrect instantaneous values at 20 and 40 seconds after each minute and incorrect calculation of 60-second averaged instantaneous values (because the 20 and 40 second values are two of three instantaneous values used to calculate this average). On 5/21/2003, the data logger program was corrected. |
Measurements: | sgpirt25m20sC1.a0:
sgpirt25mC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/09/2002 | 2000 | 03/11/2002 | 2100 |
03/13/2002 | 1800 | 03/14/2002 | 1500 |
Subject: | SGP/IRT10m/IRT25m/C1 - Missing data due to Ice storm and clock problems |
DataStreams: | sgpirt10mC1.00, sgpirt10mC1.a1, sgpirt25m20sC1.a0, sgpirt25mC1.00, sgpirt25mC1.a1, sgpirt25mC1.a2 |
Description: | Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems. |
Measurements: | sgpirt10mC1.00:
sgpirt10mC1.a1:
sgpirt25m20sC1.a0:
sgpirt25mC1.a1:
sgpirt25mC1.a2:
sgpirt25mC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2003 | 1620 | 02/19/2003 | 2359 |
Subject: | SGP/IRT25m/C1 - Corrupt instananeous dome and case temp data |
DataStreams: | sgpirt25mC1.a1 |
Description: | In the data stream sgpirt25mC1.a1, the variables inst_dome_temp inst_case_temp changed to inst_up_long_dome_temp inst_up_long_case_temp beginning with the file from 20030220. The data for these two variables appears to be corrupt in the 20030219 file after 1620, likely due to the variable name changes. The data for these two variables appear to be reasonable in the 20030220 file and beyond. |
Measurements: | sgpirt25mC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/2003 | 1200 | 11/19/2003 | 2120 |
Subject: | SGP/IRT25m/C1 - Upwelling bias due to dirt on lens |
DataStreams: | sgpirt25mC1.00, sgpirt25mC1.a1 |
Description: | The upwelling IRT at 25m exhibited a positive bias compared to the PIR. The problem was corrected when the lens was cleaned. |
Measurements: | sgpirt25mC1.a1:
sgpirt25mC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/27/2001 | 1416 | 09/27/2001 | 1456 |
Subject: | SGP/IRT/C1 - changed output range for new datalogger |
DataStreams: | sgpirt10mC1.a1, sgpirt10mC1.b1 |
Description: | The tower was lowered and the analog output parameters were changed at 14:45 to compensate for the recent change in data acquisition from an MFR logger to a CR10X. |
Measurements: | sgpirt10mC1.a1:
sgpirt10mC1.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 |
---|---|---|---|
08/26/2006 | 0853 | 09/18/2006 | 1530 |
Subject: | SGP/IRT/C1 - UPS failing |
DataStreams: | sgpirt10mC1.b1 |
Description: | The IRT data were intermittently bad during this period due to a failing UPS. The problem was corrected by replacing the UPS. |
Measurements: | sgpirt10mC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/2008 | 0000 | 10/01/2008 | 1905 |
Subject: | SGP/IRT/C1 - Contamination of 25M lens |
DataStreams: | sgpirt25mC1.b1 |
Description: | The IRT exhibited a positive bias compared to PIR. The problem was corrected by cleaning the lens. |
Measurements: | sgpirt25mC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2012 | 1530 | 01/04/2012 | 2030 |
Subject: | SGP/IRT/C1 - Noisy 10m IRT data |
DataStreams: | sgpirt10mC1.b1 |
Description: | The 10M IRT surface temperatures were very noisy because the connection to the data logger had become loose. |
Measurements: | sgpirt10mC1.b1:
|