DQRID : D040907.1
Start DateStart TimeEnd DateEnd Time
08/27/2004183009/07/20042130
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Subject:
SGP/SIRS/C1/E13 - Incorrect calibration coefficients
DataStreams:sgpsirsE13.b1, sgpsirs20sE13.a0, sgpsirs20sC1.a0, sgpsirsE13.00, sgpsirsC1.00,
sgpsirsC1.b1
Description:
After the DIR changeout on 8/27, the DLH measurements at the central facility vary 
significantly between pyrgeometers by as much as 65 Wm^(-2).  It was discovered that the two 
downwelling pyrgeometers destined for C1 and E13 may have been swapped during installation.  
The instrument mentor is unsure of applied calibration coefficients during this DQR's 
time period.  Backing out new downwelling longwave irradiances would be difficult in this 
case. Fortunately, the problem period is less than a fortnight.
Suggestions: 
Disregard this data.
Measurements:sgpsirsE13.00:
  • (Raw data stream - documentation not supported)
more
sgpsirsE13.b1:
  • Downwelling longwave hemispheric net infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer, standard
    deviation(down_long_hemisp_shaded_std)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer(down_long_hemisp_shaded)
  • Instantaneous downwelling pyrgeometer case thermistor temperature, shaded
    pyrgeometer(inst_down_long_shaded_case_temp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
more
sgpsirs20sE13.a0:
  • 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)
  • Instantaneous downwelling pyrgeometer dome thermistor resistance, shaded
    pyrgeometer(inst_down_long_shaded_dome_resist)
more
sgpsirsC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • 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, Minima(down_long_hemisp_shaded_min)
  • Instantaneous downwelling pyrgeometer case thermistor temperature, shaded
    pyrgeometer(inst_down_long_shaded_case_temp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Downwelling longwave hemispheric net infrared(down_long_netir)
more
sgpsirs20sC1.a0:
  • Instantaneous downwelling pyrgeometer thermopile voltage, shaded pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous downwelling pyrgeometer dome thermistor resistance, shaded
    pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
more
sgpsirsC1.00:
  • (Raw data stream - documentation not supported)
more

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