DQRID : D121010.1
Start DateStart TimeEnd DateEnd Time
08/14/2012161508/17/20121816
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Subject:
SGP/SIRS/E33 - Instrument noise problem
DataStreams:sgpsirs20sE33.a0, sgpsirsE33.b1
Description:
During troubleshooting of the UIR (up_long_hemisp) the UIR and DIR (down_long_hemsip) 
pyrgeometers were swapped to help isolate an instrument noise issue.  After this swap it was 
determined that the noise was associated with this specific instrument.

For the time range specified 8/14 to 8/17 the DIR data are not recoverable since the 
instrument was faulty (it was the old bad UIR). The instrument was replaced with spare on 8/17.
Suggestions: 
Measurements:sgpsirsE33.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer, standard
    deviation(down_long_hemisp_shaded_std)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Instantaneous downwelling pyrgeometer case thermistor temperature, shaded
    pyrgeometer(inst_down_long_shaded_case_temp)
  • Downwelling longwave hemispheric net infrared(down_long_netir)
more
sgpsirs20sE33.a0:
  • Instantaneous downwelling pyrgeometer dome thermistor resistance, shaded
    pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous downwelling pyrgeometer thermopile voltage, shaded pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
more

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