DQR ID | Subject | Data Streams Affected |
---|
D040608.2 | SGP/BRS/C1 - NIP sensor failure | sgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0 |
D050206.1 | SGP/BRS/C1 - Monthly Summary | sgpbrsC1.b1 |
D050225.2 | SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficients | sgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0 |
D050322.1 | SGP/BRS/C1 - low downwelling shortwave readings | sgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0 |
D060630.7 | SGP/BRS/C1 - Reprocessed: Longwave Calibration error | sgpbrsC1.b1 |
D061102.1 | SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement | sgpbrsC1.b1, sgpbrs20sC1.a0 |
Subject: | SGP/BRS/C1 - NIP sensor failure |
DataStreams: | sgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0
|
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: | sgpbrs20sC1.a0: - Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
Voltage(inst_direct_normal)
sgpbrsC1.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpbrsC1.b1: - Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
- Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
- Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
- Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
|
Subject: | SGP/BRS/C1 - Monthly Summary |
DataStreams: | sgpbrsC1.b1
|
Description: | Data quality this site-month is poor. This is due largely to the missing Upwelling
Shortwave and Upwelling Longwave the entire month. This problem has been ongoing for
several months now. DQPR # 124 asserted that the Global PSP was recording inaccurate
readings. Thus, the Global PSP was changed out on the 17th by site ops. Prior to the
17th, the Global PSP was falling below nighttime empirical limits on most nights and
there were severe 3 component failures during the day. The change out of the PSP
mitigated the severity of the 3 component failures and eliminated the nighttime empirical
limits failures. There were still substantial 3 component flags after the 17th. |
Measurements: | sgpbrsC1.b1: - Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
- Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
- Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
- Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
|
Subject: | SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficients |
DataStreams: | sgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0
|
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: | sgpbrs20sC1.a0: - Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
Voltage(inst_direct_normal)
sgpbrsC1.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpbrsC1.b1: - Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
- Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
- Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
- Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
|
Subject: | SGP/BRS/C1 - low downwelling shortwave readings |
DataStreams: | sgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0
|
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: | sgpbrs20sC1.a0: - Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
Voltage(inst_global)
sgpbrsC1.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpbrsC1.b1: - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
Deviation(down_short_hemisp_std) - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
|
Subject: | SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement |
DataStreams: | sgpbrsC1.b1, sgpbrs20sC1.a0
|
Description: | On 20031211 the Downwelling LW pyrgeometer was replaced but the calibrations were not
updated. Calibrations have been corrected in data beginning 20040615. |
Measurements: | sgpbrs20sC1.a0: - Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
sgpbrsC1.b1: - Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
- Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
- Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
- Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
- Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
Deviation(down_long_hemisp_shaded_std)
|