DQRID : D110613.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/05/2011153203/07/20111855Incorrect
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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
Suggestions: 
Measurements:sgpsirs20sE16.a0:
  • inst_global
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sgpsirsE16.b1:
  • down_short_hemisp
  • down_short_hemisp_min
  • down_short_hemisp_std
  • down_short_hemisp_max
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