Data Quality Reports for Session: 102177 User: roujean Completed: 10/18/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050825.3NSA/GNDRAD/C1 - Power Disconnected Brieflynsagndrad60sC1.b1
D060630.39NSA/GNDRAD/C1 - Reprocess: Longwave Calibration errornsagndrad60sC1.b1
D060630.40NSA/GNDRAD/C2 - Reprocess: Longwave Calibration errornsagndrad60sC2.b1


DQRID : D050825.3
Start DateStart TimeEnd DateEnd Time
08/24/2005003008/24/20050030
Subject:
NSA/GNDRAD/C1 - Power Disconnected Briefly
DataStreams:nsagndrad60sC1.b1
Description:
Power to the Tip tower and Groundrad was disconnected briefly while ground resistance 
measurements were made. 

The following comments are from Inst. Mentor Tom Stoffel: 

The longwave and shortwave irradiances from GNDRAD were not effected by the
temporary power disconnect.  Data are good.  This would have only stopped
the ventilators for a brief time and the data do not show any signs of poor
instrument responses.

The "sfc_ir_temp" data were, however, impacted during the brief (2
readings?) interval.
Measurements:nsagndrad60sC1.b1:
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • External voltage(external_voltage)

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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, Ventilated Pyrgeometer(up_long_hemisp)

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DQRID : D060630.40
Start DateStart TimeEnd DateEnd Time
11/17/2004003712/22/20052152
Subject:
NSA/GNDRAD/C2 - Reprocess: Longwave Calibration error
DataStreams:nsagndrad60sC2.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:nsagndrad60sC2.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)

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