DQRID : D050227.1
Start DateStart TimeEnd DateEnd Time
02/13/2005194503/17/20051745
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Subject:
SGP/SIRS/E24 - Erratic downwelling shortwave data
DataStreams:sgpsirs20sE24.a0, sgpsirsE24.b1, sgpsirsE24.00
Description:
Downwelling shortwave hemispheric readings are occasionally erratic, jumping to very high 
or very low values for short periods of time. SGP PM techs reseated all Downwelling 
Shortwave PSP instrument connections on 3/17/2005 approx 1945GMT.  The problem did not reoccur 
after that time but the DS cable was replaced on 3/31/2005 approx 1815 GMT to ensure the 
problem did not reappear.
Suggestions: 
Disregard suspect data
Measurements:sgpsirsE24.b1:
  • Downwelling shortwave hemispheric irradiance, pyranometer, maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
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sgpsirs20sE24.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Pyranometer Thermopile Voltage(inst_global)
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sgpsirsE24.00:
  • (Raw data stream - documentation not supported)
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