DQRID : D070530.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/29/2007200605/31/20071752Incorrect
more
Subject:
SGP/SIRS/E5 - Reprocess: Incorrect shortwave calibration coefficients
DataStreams:sgpsirsE5.b1, sgpsirs20sE5.a0
Description:
Following a 13 day outage, data collection resumed with incorrect calibration coefficients 
for the shortwave instruments.  The correct calibrations were applied beginning 20070531 
at 1752GMT.  Longwave data were unaffected.

To back out data with incorrect shortwave cal coefficients perform the following 
conversions on each 1 minute data element:
Downwelling Diffuse Shortwave (8-48): DD(cor) = DD*(113.61/113.56)
Upwelling Shortwave :  US(cor) = US*(115.72/112.78)
Direct Normal : DN(cor) = DN * (121.56/120.14)
Downwelling Shortwave : DS(cor) = DS * (121.73/120.87)
Suggestions: 
Avoid all SW data during specified time period until reprocessed data are available.
Measurements:sgpsirsE5.b1:
  • down_short_diffuse_hemisp_max
  • down_short_diffuse_hemisp
  • up_short_hemisp
  • down_short_diffuse_hemisp_std
  • up_short_hemisp_std
  • short_direct_normal_std
  • down_short_hemisp_min
  • short_direct_normal_max
  • down_short_hemisp_max
  • down_short_hemisp_std
  • up_short_hemisp_max
  • short_direct_normal
  • down_short_diffuse_hemisp_min
  • short_direct_normal_min
  • up_short_hemisp_min
  • down_short_hemisp
more
sgpsirs20sE5.a0:
  • inst_global
  • inst_diffuse
  • inst_up_short_hemisp
  • inst_direct_normal
more

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