DQRID : D000719.3
Start DateStart TimeEnd DateEnd Time
03/02/1999064103/04/19990200
more
Subject:
TWP/SKYRAD/C1 - Reprocess: Calibration error
DataStreams:twpskyrad60sC1.a1, twpskyrad60sC1.b1
Description:
The following incorrect calibrations values were input into SKYRAD and GNDRAD loggers:

               Values in Logger              Correct Values
            
               Responsivity  Cal Number       Responsivity  Cal number

PSPD_SKYRAD    8.31          120337           8.32          120192
PSPG_SKYRAD    8.46          118203           8.64          115741
PSPDn_GNDRAD   7.79          128370           7.90          126582

This error occurred because several calibration coefficients are reported and the wrong 
one was used.  The 45-55 degree (solar zenith angle range) value should be used. At 
approximately 02 GMT on 19990304, the calibrations were corrected. 

Data will be reprocessed (RID-52).
Suggestions: 
Measurements:twpskyrad60sC1.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Pyrgeometer, Minima(down_short_diffuse_hemisp_min)
  • Downwelling shortwave hemispheric irradiance, pyranometer, maxima(down_short_hemisp_max)
  • Downwelling shortwave diffuse hemispheric irradiance, pyranometer, maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Pyranometer, Standard
    Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Minima(down_short_hemisp_min)
  • Down-welling unshaded pyranometer voltage(down_short_hemisp)
more
twpskyrad60sC1.a1:
  • PSP shaded mean(psps_mean)
  • PSP shaded maximum(psps_max)
  • PSP1 mean(psp1_mean)
  • PSP1 maximum(psp1_max)
  • PSP shaded minimum(psps_min)
  • PSP shaded standard deviation(psps_sd)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)
more

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