Data Quality Reports for Session: 135985 User: dmfoper Completed: 07/08/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D061214.3SGP/IRT/E19 - Reprocess: Calibration errorsgpirtE19.b1, sgpirt200msE19.a1
D091215.3SGP/IRT/E19 - Response timesgpirtE19.b1, sgpirt200msE19.a1


DQRID : D061214.3
Start DateStart TimeEnd DateEnd Time
12/01/2005000004/27/20071618
Subject:
SGP/IRT/E19 - Reprocess: Calibration error
DataStreams:sgpirtE19.b1, sgpirt200msE19.a1
Description:
The IRT was measuring ~20K higher sky temperatures than at other nearby extended facilies. 
The calibration of the instrument was incorrect. The problem was corrected by replacing 
the IRT.

The offset in the calibration will be determined and the data will be corrected.
Measurements:sgpirtE19.b1:
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • sky_ir_temp_max
  • sky_ir_temp_min
sgpirt200msE19.a1:
  • Temperature, Sky Infra-Red(sky_ir_temp)

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DQRID : D091215.3
Start DateStart TimeEnd DateEnd Time
12/01/2005000003/30/20062359
Subject:
SGP/IRT/E19 - Response time
DataStreams:sgpirtE19.b1, sgpirt200msE19.a1
Description:
The time response of the temperature measurement was changed from 1.0 to 0.1 sec to 
accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a 
sky temperature of -50C) and a significant decrease in the signal-to-noise ratio.
Measurements:sgpirtE19.b1:
  • sky_ir_temp_std
  • ref_ir_temp_std
sgpirt200msE19.a1:
  • ref_ir_temp
  • Temperature, Sky Infra-Red(sky_ir_temp)

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