DQRID : D080418.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/17/2008063204/23/20081815Incorrect
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Subject:
NSA/SKYRAD/C1 - Direct and Diffuse incorrect
DataStreams:nsaskyrad60sC1.b1, nsaskyrad20sC1.a0
Description:
The short_direct_normal (NIP) instrument and cable were damaged by tracker rewind 
malfunction. Tracker and NIP replaced on 4/22 2200GMT but tracker not operational until 4/23 
1815GMT.  Thus, down_short_diffuse_hemisp (8-48) was not shaded 4/22 to 4/23.

Do not use 8-48 data from 4/22 to 4/23. NIP data is not recoverable during entire time but 
can be estimated using component sum for each 1 minute data: Direct = (global - 
diffuse)/cos(zenith angle)
Suggestions: 
Measurements:nsaskyrad20sC1.a0:
  • inst_diffuse
  • inst_direct_normal
more
nsaskyrad60sC1.b1:
  • down_short_diffuse_hemisp_std
  • down_short_diffuse_hemisp_min
  • short_direct_normal
  • down_short_diffuse_hemisp_max
  • short_direct_normal_max
  • down_short_diffuse_hemisp
  • short_direct_normal_std
  • short_direct_normal_min
more

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