Data Quality Reports for Session: 103294 User: turner Completed: 12/15/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060502.2PYE/GNDRAD/M1 - Reprocess: wrong configuration and calibrationpyegndradM1.00, pyegndrad20sM1.a0, pyegndrad60sM1.b1
D060630.44PYE/GNDRAD/M1 - Reprocess: Longwave Calibration errorpyegndrad60sM1.b1


DQRID : D060502.2
Start DateStart TimeEnd DateEnd Time
02/17/2005182103/11/20052032
Subject:
PYE/GNDRAD/M1 - Reprocess: wrong configuration and calibration
DataStreams:pyegndradM1.00, pyegndrad20sM1.a0, pyegndrad60sM1.b1
Description:
The configuration of the IRTs was inadvertently set to default and the program of the data 
loggers were changed to that used at TWP.C3. This caused the calibration of the data to 
be wrong. It was corrected by reconfiguring the IRTs and changing the conversion factors 
in the data logger program.

These data can be either discarded, since they were collected prior to the "official" 
start of the PYE site, or reprocessed and corrected using the following translations:

sfc_ir_temp(new) = sfc_ir_temp(old)*1.2 - 106.64K
sfc_ir_temp_max(new) = sfc_ir_temp_max(old)*1.2 - 106.64K
sfc_ir_temp_min(new) = sfc_ir_temp_min(old)*1.2 - 106.64K
sfc_ir_temp_std(new) = sfc_ir_temp_std(old)*1.2
Measurements:pyegndrad60sM1.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)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)

pyegndradM1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

pyegndrad20sM1.a0:
  • Instantaneous Surface Infra-Red Signal(inst_sfc_ir_signal)


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DQRID : D060630.44
Start DateStart TimeEnd DateEnd Time
02/01/2005000009/14/20050000
Subject:
PYE/GNDRAD/M1 - Reprocess: Longwave Calibration error
DataStreams:pyegndrad60sM1.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:pyegndrad60sM1.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)


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