DQRID : D061016.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/13/2006013512/04/20062120Suspect
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Subject:
TWP/SKYRAD/C2 - IRT signal
DataStreams:twpskyrad60sC2.b1
Description:
The IRT exhibited a bias of the analog voltage output that caused problems with the 
signals from the other SKYRAD radiometers. The bias was due to corrosion between the power and 
signal connections in the IRT cable. The IRT was disconnected on 10/18/2006 at 01:20 and 
replaced on 11/6/2006 at 23:00 but it too appeared to have grounding problems due to 
internal corrosion and was disconnected on 11/11/2006 at 11:42 and then intermittently 
reconnected for testing. A second spare was installed on 12/4/2006 which did not cause problems 
with the signals from the other instruments.
Suggestions: 
The IRT measurements appear to be good but since its grounding problem affected other 

instruments connected to the same logger, the data should be used with caution.
Measurements:twpskyrad60sC2.b1:
  • sky_ir_temp_max
  • sky_ir_temp
  • sky_ir_temp_min
  • sky_ir_temp_std
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