DQRID : D031118.1
Start DateStart TimeEnd DateEnd Time
11/11/2003043811/18/20032200
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Subject:
SGP/SIRS/E1 - Unknown - Downwelling shaded longwave measurement incorrect
DataStreams:sgpsirs20sE1.a0, sgpsirsE1.00, sgpsirsE1.b1
Description:
Downwelling longwave values were very noisy and out of range 
               due to a missing PIR case temperature measurement. Faulty 
               wiring to the case temperature thermistor on the downwelling 
               longwave IR instrument (PIR) was the likely cause of
               the problem.
               On 11/18, the E1 tracker and associated instruments (direct 
               shortwave -NIP, hemispheric shaded shortwave -8-48 and 
               hemispheric shaded longwave - problem PIR) were moved to a new 
               tracker stand.  Rewiring the instrument corrected the problem.
Suggestions: 
Disregard this data
Measurements:sgpsirsE1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Instantaneous downwelling pyrgeometer case thermistor temperature, shaded
    pyrgeometer(inst_down_long_shaded_case_temp)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer, standard
    deviation(down_long_hemisp_shaded_std)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
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sgpsirs20sE1.a0:
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
more
sgpsirsE1.00:
  • (Raw data stream - documentation not supported)
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