Data Quality Reports for Session: 108450 User: kirstie Completed: 10/17/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060209.4NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensorsnsagndrad20sC1.a0, nsagndrad60sC1.b1, nsagndradC1.00
D060630.39NSA/GNDRAD/C1 - Reprocess: Longwave Calibration errornsagndrad60sC1.b1


DQRID : D060209.4
Start DateStart TimeEnd DateEnd Time
02/07/2006091002/07/20062350
Subject:
NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors
DataStreams:nsagndrad20sC1.a0, nsagndrad60sC1.b1, nsagndradC1.00
Description:
During the power outage the upwelling global measurement from the PSP instrument shows a 
slight increase from -5 to +0 W/m2.  This is due to removal of thermal offsets induced by 
the AC heater during the power outage.  This heater is installed within the PSP 
ventilator - it is necessary for the NSA/C1 climate.
The upwelling longwave PIR instrument is unaffected due to case and dome temperature 
corrections.
The IRT is AC powered and was not operational during this time period.
Measurements:nsagndradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
nsagndrad20sC1.a0:
  • Instantaneous Surface Infra-Red Signal(inst_sfc_ir_signal)
nsagndrad60sC1.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
    Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)

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DQRID : D060630.39
Start DateStart TimeEnd DateEnd Time
11/04/2004160012/21/20051855
Subject:
NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:nsagndrad60sC1.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:nsagndrad60sC1.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

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