Data Quality Reports for Session: 150036 User: zsjiek Completed: 05/09/2013


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D110811.1SGP/BRS/C1 - SW Direct Normal incorrectsgpbrs20sC1.a0, sgpbrsC1.b1
D110902.4SGP/BRS/C1 - Tracker failuresgpbrs20sC1.a0, sgpbrsC1.b1
D120118.1SGP/BRS/C1 - Reprocess: Incorrect calibration coefficient for down_short_diffuse_hemispsgpbrs20sC1.a0, sgpbrsC1.b1


DQRID : D110811.1
Start DateStart TimeEnd DateEnd Time
06/12/2011000006/14/20111750
Subject:
SGP/BRS/C1 - SW Direct Normal incorrect
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.b1
Description:
Apparent lightning strike in the instrument cluster area resulted in a failed NIP. Data 
are missing or incorrect.  

The SIRS was due for calibration change outs so the US, DS, DD and NIP were replaced. The 
updated program was loaded at approximately 06/14/2011 1739 GMT.

An estimate of direct normal values can be derived using the following formula:

short_direct_normal = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith angle)
Measurements:sgpbrsC1.b1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)

sgpbrs20sC1.a0:
  • inst_direct_normal


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DQRID : D110902.4
Start DateStart TimeEnd DateEnd Time
06/12/2011000006/13/20111610
Subject:
SGP/BRS/C1 - Tracker failure
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.b1
Description:
Apparent lightning strike in the instrument cluster area resulted in a failed tracker. 
Site ops found the suntracker at home position, power cycled the suntracker and replaced 
fuse.
Measurements:sgpbrsC1.b1:
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

sgpbrs20sC1.a0:
  • inst_diffuse


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DQRID : D120118.1
Start DateStart TimeEnd DateEnd Time
06/14/2011174012/18/20112359
Subject:
SGP/BRS/C1 - Reprocess: Incorrect calibration coefficient for down_short_diffuse_hemisp
DataStreams:sgpbrs20sC1.a0, sgpbrsC1.b1
Description:
Applied calibration coefficient and serial number for down_short_diffuse was incorrect for 
the specified period.

Perform the following calculation to correct the data, 
DD= downwelling diffuse instrument:
Old Calibration coefficient = 114.74[W/m2\mV]
New Calibration Coefficient = 109.51[W/m2\mV]   
DD(new)[W/m2]=( DD(old)[W/m2]/ 114.74 [W/m2\mV] )* 109.51 [W/m2/mV]
Measurements:sgpbrsC1.b1:
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

sgpbrs20sC1.a0:
  • inst_diffuse


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