DQRID : D100614.3
Start DateStart TimeEnd DateEnd Time
04/29/2010030206/01/20101550
more
Subject:
SGP/SIRS/E11 - Multiplexer problem
DataStreams:sgpsirs20sE11.a0, sgpsirsE11.b1
Description:
Values of down_short_hemisp, down_long_shaded_hemisp and up_long_hemisp began 
intermittently dropping out beginning 04/29.  This problem gradually became worse, but remained 
intermittent from day to day. 

Site ops reseated the mux connections and replaced the logger wiring panel on 6/1 approx 
1600GMT which corrected the problem.

The automatic quality control flags for the three affected datastreams can be very 
effective at determining the suspect/bad data values for exclusion. Alternatively the affected 
dates and times are given below:
4/29 0302,0345,1312,1405,1905GMT
5/05 0144,1525-1550,1900-2100GMT
5/06 1615,1924GMT
5/10 2000-2359GMT
5/11 1720-1755GMT
5/13 1430-1630GMT
5/14 1700-1900GMT
6/01 1500-1650GMT
Suggestions: 
Measurements:sgpsirs20sE11.a0:
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous downwelling pyrgeometer dome thermistor resistance, shaded
    pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous Downwelling Hemispheric Shortwave, Pyranometer Thermopile Voltage(inst_global)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
  • Instantaneous Upwelling Pyrgeometer Thermopile Pyrgeometer(inst_up_long_hemisp_tp)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous downwelling pyrgeometer thermopile voltage, shaded pyrgeometer(inst_down_long_hemisp_shaded_tp)
more
sgpsirsE11.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling longwave hemispheric net infrared(down_long_netir)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer, standard
    deviation(down_long_hemisp_shaded_std)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Minima(down_short_hemisp_min)
  • Instantaneous Dome Temperature(inst_up_long_dome_temp)
  • Instantaneous Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_netir)
  • Downwelling longwave hemispheric irradiance, shaded pyrgeometer(down_long_hemisp_shaded)
  • Instantaneous upwelling pyrgeometer case thermistor temperature, pyrgeometer(inst_up_long_case_temp)
  • 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
  • Instantaneous downwelling pyrgeometer case thermistor temperature, shaded
    pyrgeometer(inst_down_long_shaded_case_temp)
  • Upwelling longwave hemispheric irradiance, pyrgeometer, maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
  • 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)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling shortwave hemispheric irradiance, pyranometer, maxima(down_short_hemisp_max)
more

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