DQRID : D020905.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/19/1997000011/15/19992011Suspect
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Subject:
SGP/IRT25M/C1 - Reprocess: IRT insufficiently insulated
DataStreams:sgpirt25mC1.b1
Description:
The upwelling IRT on the 25M tower was insufficiently insulated to maintain an internal 
reference temperature above 0 degrees C. Measurements of surface temperature were 
over-estimated when instrument was below freezing.

Data will be reprocessed, but users can correct data using the following correction 
factor:

If T_reference < -5°C, then

  IRT_corrected = (IRT_original - 32.993K)/0.87238

where T_reference can be estimated with the ambient temperature (e.g.
inst_up_long_hemisp_dome_temp or inst_up_long_dome_temp)
Suggestions: 
Measurements:sgpirt25mC1.b1:
  • sfc_ir_temp_max
  • inst_sfc_ir_temp
  • sfc_ir_temp
  • sfc_ir_temp_min
  • sfc_ir_temp_std
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