Data Quality Reports for Session: 101841 User: perez Completed: 10/02/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D030901.1SGP/SIRS/E19 - Shadowband MisalignmentsgpsirsE19.00, sgpsirsE19.b1, sgpsirs20sE19.a0
D060403.3SGP/SIRS/E19 - Ventilator failuresgpsirsE19.00, sgpsirsE19.b1, sgpsirs20sE19.a0
D060630.25SGP/SIRS/E19 - Reprocess: Longwave Calibration errorsgpsirsE19.b1


DQRID : D030901.1
Start DateStart TimeEnd DateEnd Time
08/28/2003120009/04/20031526
Subject:
SGP/SIRS/E19 - Shadowband Misalignment
DataStreams:sgpsirsE19.00, sgpsirsE19.b1, sgpsirs20sE19.a0
Description:
The solar tracker appears to have failed on 8/28. Fuse replaced on 09/04/03 and tracker 
returned to service at 15:26GMT
Measurements:sgpsirsE19.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)

sgpsirs20sE19.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)

sgpsirsE19.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D060403.3
Start DateStart TimeEnd DateEnd Time
01/11/2006000004/13/20061522
Subject:
SGP/SIRS/E19 - Ventilator failure
DataStreams:sgpsirsE19.00, sgpsirsE19.b1, sgpsirs20sE19.a0
Description:
Dowenlling shortwave hemispheric instrument signal (Eppley PSP) is very erratic due to 
failed ventilator fan which was replaced during PM on 04/13/2006.
Measurements:sgpsirsE19.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)

sgpsirs20sE19.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)

sgpsirsE19.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D060630.25
Start DateStart TimeEnd DateEnd Time
07/24/2003160002/16/20061558
Subject:
SGP/SIRS/E19 - Reprocess: Longwave Calibration error
DataStreams:sgpsirsE19.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:sgpsirsE19.b1:
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)


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