DQR ID | Subject | Data Streams Affected |
---|---|---|
D030916.6 | SGP/BRS/C1 - low downwelling shortwave readings | sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2 |
D030917.6 | SGP/BRS/C1 - Missing data due to Ice storm and clock problems | sgp15swfanalbrs1longC1.c1, sgp1swfanalbrs1longC1.c1, sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2 |
D040608.2 | SGP/BRS/C1 - NIP sensor failure | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
D050225.2 | SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficients | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
D050322.1 | SGP/BRS/C1 - low downwelling shortwave readings | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
D061102.1 | SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement | sgpbrs20sC1.a0, sgpbrsC1.b1 |
D110811.1 | SGP/BRS/C1 - SW Direct Normal incorrect | sgpbrs20sC1.a0, sgpbrsC1.b1 |
D110902.4 | SGP/BRS/C1 - Tracker failure | sgpbrs20sC1.a0, sgpbrsC1.b1 |
D120118.1 | SGP/BRS/C1 - Reprocess: Incorrect calibration coefficient for down_short_diffuse_hemisp | sgpbrs20sC1.a0, sgpbrsC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/05/2001 | 0000 | 04/17/2003 | 2359 |
Subject: | SGP/BRS/C1 - low downwelling shortwave readings |
DataStreams: | sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2 |
Description: | Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in clear-sky conditions. Corrective maintenance on 12/1/2004 corrected this offset. It is not clear which CM action corrected the problem since the DS instrument cable was grounded to a new location and the DS ventilator fan was found in poor condition and was replaced. Either of these issues could have led to the problem observed in this instrument. |
Measurements: | sgpbrs60sC1.a1:
sgpbrs20sC1.a0:
sgpbrsC1.00:
sgpbrsC1.a2:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/09/2002 | 2000 | 03/10/2002 | 2348 |
03/13/2002 | 1800 | 03/14/2002 | 1500 |
Subject: | SGP/BRS/C1 - Missing data due to Ice storm and clock problems |
DataStreams: | sgp15swfanalbrs1longC1.c1, sgp1swfanalbrs1longC1.c1, sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgpbrsC1.00, sgpbrsC1.a2 |
Description: | Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems. |
Measurements: | sgp15swfanalbrs1longC1.c1:
sgpbrs60sC1.a1:
sgp1swfanalbrs1longC1.c1:
sgpbrs20sC1.a0:
sgpbrsC1.00:
sgpbrsC1.a2:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/02/2004 | 1734 | 06/15/2004 | 2010 |
Subject: | SGP/BRS/C1 - NIP sensor failure |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
Description: | Normal incidence values of downwelling shortwave radiation were reported as -9999 (missing). The NIP instrument was damaged by lightning in the area near the time of failure. |
Measurements: | sgpbrsC1.b1:
sgpbrs20sC1.a0:
sgpbrsC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/05/2004 | 1500 | 12/03/2004 | 1700 |
Subject: | SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficients |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
Description: | Lightening strike on or near 6/2/2004 took the BRS NIP(31747E6) out of service, on or near 6/15 the NIP was replaced and the datalogger program was changed to reflect the new NIP(31343E6). On 8/5/2004 the DIR (Downwelling longwave) instrument was changed out and a new program was loaded to reflect a new DIR. The new program contained the original installed shortwave instrument calibration coefficients including NIP 31747E6. Thus from 8/5 to when the shortwave instruments were changed out on 12/3 the wrong s/n and calibration factor (i.e. 31747E6) was applied to the actual NIP(31343E6)installed at BRS C1. |
Measurements: | sgpbrsC1.b1:
sgpbrs20sC1.a0:
sgpbrsC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/2003 | 0000 | 12/17/2004 | 2030 |
Subject: | SGP/BRS/C1 - low downwelling shortwave readings |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.00, sgpbrsC1.b1 |
Description: | Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in clear-sky conditions. Corrective maintenance on 12/17/2004 corrected this offset. It is not clear which CM action corrected the problem since the DS instrument cable was grounded to a new location and the DS ventilator fan was found in poor condition and was replaced. Either of these issues could have led to the problem observed in this instrument. |
Measurements: | sgpbrsC1.b1:
sgpbrs20sC1.a0:
sgpbrsC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2003 | 1920 | 06/14/2004 | 2359 |
Subject: | SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.b1 |
Description: | On 20031211 the Downwelling LW pyrgeometer was replaced but the calibrations were not updated. Calibrations have been corrected in data beginning 20040615. |
Measurements: | sgpbrsC1.b1:
sgpbrs20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2011 | 0000 | 06/14/2011 | 1750 |
Subject: | SGP/BRS/C1 - SW Direct Normal incorrect |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.b1 |
Description: | Apparent lightning strike in the instrument cluster area resulted in a failed NIP. Data are missing or incorrect. The SIRS was due for calibration change outs so the US, DS, DD and NIP were replaced. The updated program was loaded at approximately 06/14/2011 1739 GMT. An estimate of direct normal values can be derived using the following formula: short_direct_normal = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith angle) |
Measurements: | sgpbrsC1.b1:
sgpbrs20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2011 | 0000 | 06/13/2011 | 1610 |
Subject: | SGP/BRS/C1 - Tracker failure |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.b1 |
Description: | Apparent lightning strike in the instrument cluster area resulted in a failed tracker. Site ops found the suntracker at home position, power cycled the suntracker and replaced fuse. |
Measurements: | sgpbrsC1.b1:
sgpbrs20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/14/2011 | 1740 | 12/18/2011 | 2359 |
Subject: | SGP/BRS/C1 - Reprocess: Incorrect calibration coefficient for down_short_diffuse_hemisp |
DataStreams: | sgpbrs20sC1.a0, sgpbrsC1.b1 |
Description: | Applied calibration coefficient and serial number for down_short_diffuse was incorrect for the specified period. Perform the following calculation to correct the data, DD= downwelling diffuse instrument: Old Calibration coefficient = 114.74[W/m2\mV] New Calibration Coefficient = 109.51[W/m2\mV] DD(new)[W/m2]=( DD(old)[W/m2]/ 114.74 [W/m2\mV] )* 109.51 [W/m2/mV] |
Measurements: | sgpbrsC1.b1:
sgpbrs20sC1.a0:
|