DQRID : D110725.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/12/2011053906/14/20111556Incorrect
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Subject:
SGP/SIRS/E13 - NIP damaged by lightning strike
DataStreams:sgpsirsE13.b1, sgpsirs20sE13.a0
Description:
Apparent lightning strike in the instrument cluster area resulted in a failed NIP. The 
SIRS was due for calibration change outs so the US, DS, DD and NIP were replaced. The 
updated program was loaded at approximately 1730 GMT.

An estimate of direct normal values can be derived using the following formula:

short_direct_normal = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith angle)
Suggestions: 
Measurements:sgpsirsE13.b1:
  • short_direct_normal_max
  • short_direct_normal
  • short_direct_normal_min
  • short_direct_normal_std
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sgpsirs20sE13.a0:
  • inst_direct_normal
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