DQR ID | Subject | Data Streams Affected |
---|
D040405.2 | SGP/SIRS/E7 - PSP dome contamination | sgpsirs20sE7.a0, sgpsirsE7.b1 |
D040420.2 | SGP/SIRS/E5 - Dirt on PSP Dome | sgpsirs20sE5.a0, sgpsirsE5.00, sgpsirsE5.b1 |
D040420.4 | SGP/SIRS/E27 - incorrect tracking | sgpsirs20sE27.a0, sgpsirsE27.00, sgpsirsE27.b1 |
D040601.1 | SGP/SIRS/E21 - Dirt on dome | sgpsirs20sE21.a0, sgpsirsE21.00, sgpsirsE21.b1 |
D040621.3 | SGP/SIRS/E7 - Reprocessed: Corrected downwelling longwave calibrations | sgpsirsE7.b1 |
D040712.3 | SGP/SIRS/E24 - NIP shaded near sunrise | sgpsirs20sE24.a0, sgpsirsE24.b1 |
D040831.2 | SGP/SIRS/E7 - Reprocess: Incorrect shortwave radiometer calibration coefficients | sgpsirsE7.00, sgpsirsE7.b1 |
D040831.3 | SGP/SIRS/E8 - Reprocess: Incorrect shortwave radiometer calibration coefficients | sgpsirsE8.00, sgpsirsE8.b1 |
D060630.10 | SGP/SIRS/E2 - Reprocessed: Longwave Calibration error | sgpsirsE2.b1 |
D060630.11 | SGP/SIRS/E3 - Reprocessed: Longwave Calibration error | sgpsirsE3.b1 |
D060630.12 | SGP/SIRS/E4 - Reprocessed: Longwave Calibration error | sgpsirsE4.b1 |
D060630.13 | SGP/SIRS/E5 - Reprocessed: Longwave Calibration error | sgpsirsE5.b1 |
D060630.14 | SGP/SIRS/E6 - Reprocessed: Longwave Calibration error | sgpsirsE6.b1 |
D060630.15 | SGP/SIRS/E7 - Reprocessed: Longwave Calibration error | sgpsirsE7.b1 |
D060630.16 | SGP/SIRS/E8 - Reprocessed: Longwave Calibration error | sgpsirsE8.b1 |
D060630.17 | SGP/SIRS/E9 - Reprocessed: Longwave Calibration error | sgpsirsE9.b1 |
D060630.26 | SGP/SIRS/E20 - Reprocessed: Longwave Calibration error | sgpsirsE20.b1 |
D060630.27 | SGP/SIRS/E21 - Reprocessed: Longwave Calibration error | sgpsirsE21.b1 |
D060630.28 | SGP/SIRS/E22 - Reprocessed: Longwave Calibration error | sgpsirsE22.b1 |
D060630.29 | SGP/SIRS/E24 - Reprocessed: Longwave Calibration error | sgpsirsE24.b1 |
D060630.30 | SGP/SIRS/E27 - Reprocessed: Longwave Calibration error | sgpsirsE27.b1 |
Subject: | SGP/SIRS/E7 - PSP dome contamination |
DataStreams: | sgpsirs20sE7.a0, sgpsirsE7.b1
|
Description: | Values of hemispheric downwelling shortwave radiation differed from derived values by 45
W/m^2 on 03/30 around 1430 GMT under clear sky conditions due to dirt on the dome.
Maintenance reported cleaning heavy dust from dome on 04/06 2030 GMT. |
Measurements: | sgpsirs20sE7.a0: - Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
Voltage(inst_global)
sgpsirsE7.b1: - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
- Down-welling unshaded pyranometer voltage(down_short_hemisp)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
Deviation(down_short_hemisp_std) - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
|
Subject: | SGP/SIRS/E5 - Dirt on PSP Dome |
DataStreams: | sgpsirs20sE5.a0, sgpsirsE5.00, sgpsirsE5.b1
|
Description: | The PSP dome was dirty. The magnitude of differences from derived
vs. measured values of downwelling shortwave were about 75 W/m^2.
Preventative maintenance on 4/21 cleaned instruments but they
became dirty again immediately afterward and continued to be
so until the next PM on 5/5. |
Measurements: | sgpsirsE5.b1: - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
- Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
Deviation(down_short_hemisp_std) - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
- Down-welling unshaded pyranometer voltage(down_short_hemisp)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
sgpsirs20sE5.a0: - Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
Voltage(inst_global) - Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
Voltage(inst_direct_normal)
sgpsirsE5.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
|
Subject: | SGP/SIRS/E27 - incorrect tracking |
DataStreams: | sgpsirs20sE27.a0, sgpsirsE27.00, sgpsirsE27.b1
|
Description: | The solar tracker at E27 was not functioning properly. The problem affected tracker
mounted instruments: downwelling diffuse 8-48 and direct normal pyrheliometer NIP.
After tracker adjustment on 4/14/2004 1700GMT the tracker stopped tracking properly during
afternoon hours. Attempts to correct tracker operation throughout the failure period
resulted in variations on incorrect tracker operation. No replacement tracker was available.
After adjustment on 9/15/2004 the tracker problem was resolved. It is unclear what, other
than typical az and zen tracker software changes by field techs, corrected the problem.
This problem period corresponds to the first time range specified (4/14 to 9/15).
On 10/27/2004 a replacement tracker was installed at E27. Technical difficulties kept
tracker out of service until 11/05/2004. The replacement tracker at E27 was put into serice
by the field techs on 11/05/2004 1830GMT. The tracker has been tracking correctly since
this time. This problem period corresponds to the second time range (10/27 to 11/05). |
Measurements: | sgpsirsE27.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpsirsE27.b1: - Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Minima(down_short_diffuse_hemisp_min) - Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Maxima(down_short_diffuse_hemisp_max) - Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
- Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
- Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
sgpsirs20sE27.a0: - Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
Thermopile Voltage(inst_diffuse) - Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
Voltage(inst_direct_normal)
|
Subject: | SGP/SIRS/E21 - Dirt on dome |
DataStreams: | sgpsirs20sE21.a0, sgpsirsE21.00, sgpsirsE21.b1
|
Description: | Measured downwelling shortwave values differed from calculated
(direct + diffuse) by +/-100 W/m^2 in the afternoon. Pattern of
differences is indicative of a dirty downwelling shortwave dome.
Maintenance on 6/9 cleaned water spots on the dome. Other
downwelling instruments may have also been dirty during this
period. |
Measurements: | sgpsirsE21.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpsirs20sE21.a0: - Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
Voltage(inst_direct_normal) - Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
Thermopile Voltage(inst_diffuse) - Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
Voltage(inst_global)
sgpsirsE21.b1: - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
- Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
- Down-welling unshaded pyranometer voltage(down_short_hemisp)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
Deviation(down_short_hemisp_std) - Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Maxima(down_short_diffuse_hemisp_max) - Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Minima(down_short_diffuse_hemisp_min) - Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
|
Subject: | SGP/SIRS/E24 - NIP shaded near sunrise |
DataStreams: | sgpsirs20sE24.a0, sgpsirsE24.b1
|
Description: | The NIP is shaded by the EF laptop computer enclosure near sunrise during parts of the
Spring and Summer. This has occurred from 04/08 to 05/20 and from 07/26 to 09/06 every year
since 2001 and will occur during these date ranges in the future as well. The shading
occurs for a few minutes each day between 1200 and 1300 GMT depending on the time of the
year. For the early dates, shading occurs a little after 1200 GMT and by 05/20 shading
happens nearer to 1300 GMT. In late July the shading occurs near 1300 GMT and closer to
1200 GMT by 09/06. |
Measurements: | sgpsirs20sE24.a0: - Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
Voltage(inst_direct_normal)
sgpsirsE24.b1: - Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
- Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
|
Subject: | SGP/SIRS/E7 - Reprocess: Incorrect shortwave radiometer calibration coefficients |
DataStreams: | sgpsirsE7.00, sgpsirsE7.b1
|
Description: | During the pyrgeometer instrument (PIR) changout a datalogger program was loaded with
incorrect calibration coefficients for the shortwave instruments. The affected measurements
(instruments) were : downwelling diffuse (8-48), upwelling shortwave(PSP), direct normal
(NIP) and downwelling shortwave (PSP)
Recalculate irradiances by determining original mV signal and reapplying the correct
calibration coefficients. For each one minute irradiance value perform the following
calculations by instrument:
DD(corrected) = (DD/107.24)*108.50
US(corrected) = (US/113.19)*110.10
NIP(corrected)= (NIP/120.17)*122.26
DS(corrected) = (DS/118.46)*122.56 |
Measurements: | sgpsirsE7.b1: - Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
- Down-welling unshaded pyranometer voltage(down_short_hemisp)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
Deviation(down_short_hemisp_std) - Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
Deviation(up_short_hemisp_std) - Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Minima(down_short_diffuse_hemisp_min) - Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
- Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
- Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Maxima(down_short_diffuse_hemisp_max) - Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
sgpsirsE7.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
|
Subject: | SGP/SIRS/E8 - Reprocess: Incorrect shortwave radiometer calibration coefficients |
DataStreams: | sgpsirsE8.00, sgpsirsE8.b1
|
Description: | During the pyrgeometer instrument (PIR) changeout a datalogger program was loaded with
incorrect calibration coefficients for the shortwave instruments. The affected measurements
(instruments) were: downwelling diffuse (8-48), upwelling shortwave (PSP), direct normal
(NIP) and downwelling shortwave (PSP)
Recalculate irradiances by determining original mV signal and reapplying the correct
calibration coefficients. For each one minute irradiance value perform the following
calculations by instrument:
DD(corrected) = (DD/107.24)*116.37
US(corrected) = (US/113.19)*121.78
NIP(corrected)= (NIP/120.17)*122.47
DS(corrected) = (DS/118.46)*122.34 |
Measurements: | sgpsirsE8.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpsirsE8.b1: - Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
Deviation(up_short_hemisp_std) - Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
- Down-welling unshaded pyranometer voltage(down_short_hemisp)
- Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
- Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
- Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Minima(down_short_diffuse_hemisp_min) - Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Maxima(down_short_diffuse_hemisp_max) - Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
- Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
Deviation(down_short_hemisp_std) - Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
|