Data Quality Reports for Session: 100294 User: whwang Completed: 07/05/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D041013.3NSA/GNDRAD/C1 - Frosting/CondensationnsagndradC1.00, nsagndrad20sC1.a1, nsagndrad60sC1.b1


DQRID : D041013.3
Start DateStart TimeEnd DateEnd Time
10/09/20040010/15/20042359
Subject:
NSA/GNDRAD/C1 - Frosting/Condensation
DataStreams:nsagndradC1.00, nsagndrad20sC1.a1, nsagndrad60sC1.b1
Description:
The GNDRAD PIR and IRT comparison was showing the IRT 2-4 W/m^2 greater than the PIR.  
Suspected snow or frost on the instrument(s).  Corrective maintenance performed 10/15/04 at 
21:30 UT.  Optics of both instruments were cleaned.  Upwelling longwave measurement 
agreement restored (+/- 5 W/^2).

Although the relative performance (agreement) of the two instruments improved after 
corrective maintenance (+/- 2 W/m^2), no correction is suggested because the agreement remains 
with the estimated measurement uncertainty of +/- 4 W/m^2 (IRT) and +/-10 W/m^2 (Inverted 
PIR)
Measurements:nsagndradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsagndrad60sC1.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Net Radiation, Standard Deviation(net_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)

nsagndrad20sC1.a1:
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)
  • Instantaneous PIR1 uncorrected irradiance(pir1_voltage)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)


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