Data Quality Reports for Session: 115693 User: sherman Completed: 11/12/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060509.1TWP/GNDRAD/C3 - IRT failedtwpgndrad60sC3.b1
D060823.1TWP/GNDRAD/C3 - IRT biastwpgndrad60sC3.b1
D070110.1TWP/GNDRAD/C2 - IRT signaltwpgndrad60sC2.b1
D070406.6TWP/GNDRAD/C2 - Reprocess: IRT calibrationtwpgndrad60sC2.b1
D071204.1TWP/GNDRAD/C2 - Reprocessed: Incorrect calibrationtwpgndrad20sC2.a0, twpgndrad60sC2.b1


DQRID : D060509.1
Start DateStart TimeEnd DateEnd Time
04/07/2006000005/18/20062359
Subject:
TWP/GNDRAD/C3 - IRT failed
DataStreams:twpgndrad60sC3.b1
Description:
The IRT began to fail on 4/7/2006 and failed completely (apparently due to the internal 
power supply) on 4/27. It was replaced on 5/18.
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 : D060823.1
Start DateStart TimeEnd DateEnd Time
05/19/2006000006/27/20060344
Subject:
TWP/GNDRAD/C3 - IRT bias
DataStreams:twpgndrad60sC3.b1
Description:
The IRT reported higher surface temperatures than the PIR due to corrosion on the 
terminals of the lightning protection module and a ground wire error. The corrosion was cleaned 
and the wiring corrected.
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 : D070110.1
Start DateStart TimeEnd DateEnd Time
12/03/2006040002/04/20072316
Subject:
TWP/GNDRAD/C2 - IRT signal
DataStreams:twpgndrad60sC2.b1
Description:
When the other GNDRAD radiometers were replaced on 12/3/2006, the quality of the IRT 
signal began to degrade until 12/26 when it became unusable. The instrument was replaced on 
2/4/2007.
Measurements:twpgndrad60sC2.b1:
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)

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DQRID : D070406.6
Start DateStart TimeEnd DateEnd Time
02/04/2007231702/17/20070400
Subject:
TWP/GNDRAD/C2 - Reprocess: IRT calibration
DataStreams:twpgndrad60sC2.b1
Description:
The configuration of the IRT was set to that used at TWP/C3. This caused the calibration 
of the data to be wrong. It was corrected by reconfiguring the IRT to match the datalogger 
program.
   
These data can be reprocessed and corrected by adding 10K, i.e. sfc_ir_temp(new) = 
sfc_ir_temp(old) + 10K.
Measurements:twpgndrad60sC2.b1:
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)

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DQRID : D071204.1
Start DateStart TimeEnd DateEnd Time
11/25/2007220211/30/20071724
Subject:
TWP/GNDRAD/C2 - Reprocessed: Incorrect calibration
DataStreams:twpgndrad20sC2.a0, twpgndrad60sC2.b1
Description:
The Gndrad PSP was changed out 11/25 but the datalogger program was not updated until 
11/30.

PSP #31293 installed 20071125.2202.  Correct calibration coefficient = 123.46.

Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by:
US(new) = (US(old) / 123.56 ) * 123.46

Reprocessing completed March 2008.
Measurements:twpgndrad60sC2.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
    Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
twpgndrad20sC2.a0:
  • Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)

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