Data Quality Reports for Session: 109838 User: tza Completed: 01/14/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D051206.5TWP/GNDRAD/C3 - IRT malfunctiontwpgndrad60sC3.b1
D060630.36TWP/GNDRAD/C3 - Reprocess: Longwave Calibration errortwpgndrad60sC3.b1


DQRID : D051206.5
Start DateStart TimeEnd DateEnd Time
11/21/2005150012/05/20050100
Subject:
TWP/GNDRAD/C3 - IRT malfunction
DataStreams:twpgndrad60sC3.b1
Description:
The internal IRT power supply failed (probably due to a lightning strike on 11/14) and was 
drawing excessive current on the data logger's DC system. The problem was corrected by 
replacing the instrument with a spare.
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D060630.36
Start DateStart TimeEnd DateEnd Time
05/20/2004010012/21/20052137
Subject:
TWP/GNDRAD/C3 - Reprocess: Longwave Calibration error
DataStreams:twpgndrad60sC3.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:twpgndrad60sC3.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

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