Data Quality Reports for Session: 110978 User: wlj Completed: 03/17/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050104.1TWP/SKYRAD/C3 - Reprocess: NIP calibrations incorrecttwpskyrad60sC3.b1, twpskyradC3.00
D051114.3TWP/SKYRAD/C3 - tracker inoperativetwpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00
D061214.1TWP/SKYRAD/C3 - NIP instrument failuretwpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00


DQRID : D050104.1
Start DateStart TimeEnd DateEnd Time
05/20/2004000009/02/20040400
Subject:
TWP/SKYRAD/C3 - Reprocess: NIP calibrations incorrect
DataStreams:twpskyrad60sC3.b1, twpskyradC3.00
Description:
On 05/20 during installtion of the new Campbell datalogger system and associated program 
the NIP (S/N 33551E6) was assigned an incorrect calibration coefficient.  A coefficient of 
116.01 W/m2/mV was applied when it should have been 124.378 W/m2/mV.
TWP reports SV0405D and SV0409D detail the activities which lead to this DQR.
Measurements:twpskyradC3.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)

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DQRID : D051114.3
Start DateStart TimeEnd DateEnd Time
11/14/2005045312/02/20050000
Subject:
TWP/SKYRAD/C3 - tracker inoperative
DataStreams:twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00
Description:
A lightning strike at Darwin removed the tracker from service.  Instruments installed on 
the tracker were rendered either inoperative or were not shaded during this time period.  
The longwave hemispheric instruments PIR1 and PIR2 appear to have been unaffected.  They 
are not suseptable to incorrect tracker operation.  The downwelling hemispheric shortwave 
PSP instrument mounted on Skyrad will not be affected by incorrect tracker operation.
Measurements:twpskyradC3.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
twpskyrad20sC3.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)

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DQRID : D061214.1
Start DateStart TimeEnd DateEnd Time
12/13/2006034201/16/20070440
Subject:
TWP/SKYRAD/C3 - NIP instrument failure
DataStreams:twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00
Description:
The NIP (Short Direct Normal) was replaced after it displayed symptoms of failure 
associated with either unknown precipitation related issues or a possible lightning strike.

NIP data are not recoverable.  Direct normal data can be reconstructed from global 
hemispheric and global diffuse data using the following relationship:
   global hemispheric = direct*cos(sza) + diffuse hemispheric
Measurements:twpskyradC3.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
twpskyrad20sC3.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
    Voltage(inst_direct_normal)

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