Data Quality Reports for Session: 136431 User: anderberg Completed: 07/26/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D110613.1SGP/SIRS/E16 - Downwelling global SW incorrectsgpsirsE16.b1, sgpsirs20sE16.a0
D110613.2SGP/SIRS/E15 - NIP failuresgpsirsE15.b1, sgpsirs20sE15.a0


DQRID : D110613.1
Start DateStart TimeEnd DateEnd Time
02/05/2011153203/07/20111855
Subject:
SGP/SIRS/E16 - Downwelling global SW incorrect
DataStreams:sgpsirsE16.b1, sgpsirs20sE16.a0
Description:
The down_short_hemisp (PSP instrument) values exhibit a large offset due to ventilator fan 
failure and induced instrument heating.  This offset cannot be corrected.  

Users can derive an estimate of global shortwave values with the following formula:
global = direct * cos(zenith angle) + diffuse
Measurements:sgpsirsE16.b1:
  • down_short_hemisp_std
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
sgpsirs20sE16.a0:
  • inst_global

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DQRID : D110613.2
Start DateStart TimeEnd DateEnd Time
03/11/2011190005/02/20111513
06/17/2011110006/28/20111600
Subject:
SGP/SIRS/E15 - NIP failure
DataStreams:sgpsirsE15.b1, sgpsirs20sE15.a0
Description:
The short_direct_normal (NIP instrument) cable failed during this time period.  Data are 
not recoverable.

Users can derive an estimate of direct normal values using the following formula:
short_direct_normal = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith angle)
Measurements:sgpsirs20sE15.a0:
  • inst_direct_normal
sgpsirsE15.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)

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