Data Quality Reports for Session: 101028 User: perez Completed: 08/09/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040416.1TWP/GNDRAD/C3 - IRT biastwpgndrad60sC3.b1
D050221.2TWP/GNDRAD/C3 - IRT biastwpgndrad60sC3.b1
D050221.3TWP/GNDRAD/C3 - Reprocess: IRT with wrong calibrationtwpgndrad60sC3.b1
D050919.4TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacementtwpgndrad60sC3.b1
D051206.5TWP/GNDRAD/C3 - IRT malfunctiontwpgndrad60sC3.b1
D060111.1TWP/GNDRAD/C3 - IRT powertwpgndrad60sC3.b1
D060630.36TWP/GNDRAD/C3 - Reprocess: Longwave Calibration errortwpgndrad60sC3.b1


DQRID : D040416.1
Start DateStart TimeEnd DateEnd Time
04/07/2004023004/08/20041200
04/12/2004060004/27/20041400
05/08/2004030005/15/20042200
05/27/2004110006/09/20040000
12/29/2004110001/06/20052300
Subject:
TWP/GNDRAD/C3 - IRT bias
DataStreams:twpgndrad60sC3.b1
Description:
The IRT behaved erratically, jumping frequently from reporting about 50 Wm^(-2) higher 
than the PIR for surface irradiance values to about 100Wm^(-2) lower than the PIR.  
Generally, the IRT measured lower surface temperatures than expected from the PIR.
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 : D050221.2
Start DateStart TimeEnd DateEnd Time
06/10/2004070012/25/20040300
Subject:
TWP/GNDRAD/C3 - IRT bias
DataStreams:twpgndrad60sC3.b1
Description:
The IRT measured higher surface temperatures than expected from the PIR, even at night.
Measurements:twpgndrad60sC3.b1:
  • 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 : D050221.3
Start DateStart TimeEnd DateEnd Time
11/17/2004000011/19/20040105
Subject:
TWP/GNDRAD/C3 - Reprocess: IRT with wrong calibration
DataStreams:twpgndrad60sC3.b1
Description:
A spare IRT was installed that was not configured properly.
Measurements:twpgndrad60sC3.b1:
  • 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 : D050919.4
Start DateStart TimeEnd DateEnd Time
08/05/2005003008/05/20050200
08/09/2005000008/09/20050200
Subject:
TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacement
DataStreams:twpgndrad60sC3.b1
Description:
The tower at Darwin was brought down to test and replace the Gndrad PIR on 8/5/2005 and 
the PSP on 8/9/2005
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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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 : D060111.1
Start DateStart TimeEnd DateEnd Time
12/20/2005233001/02/20062300
Subject:
TWP/GNDRAD/C3 - IRT power
DataStreams:twpgndrad60sC3.b1
Description:
The IRT failed to report after a planned power outage to add lightning protection modules 
to the AC power wiring. The problem was corrected when a loose power connection to the 
logger was found, rectified, and power restored to the logger.
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, Ventilated Pyrgeometer(up_long_hemisp)

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