Data Quality Reports for Session: 142978 User: anderberg Completed: 06/08/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D120524.1SGP/SIRS/E21 - NIP data intermittently missing or incorrectsgpsirs20sE21.a0, sgpsirsE21.b1


DQRID : D120524.1
Start DateStart TimeEnd DateEnd Time
03/08/2012003004/30/20121430
05/01/2012000005/16/20121740
Subject:
SGP/SIRS/E21 - NIP data intermittently missing or incorrect
DataStreams:sgpsirs20sE21.a0, sgpsirsE21.b1
Description:
The short_direct_normal data was showing negative values (<-50 W/m^2)(during first time 
range) and missing value (-9999)(during second time range) each day a little after sunrise. 
Primarily between the hours of 11:00 - 14:00 GMT. Site Ops repaired a broken wire in the 
NIP cable and data appeared OK after the repair.

NIP data are not recoverable. Users can calculate short_direct normal component using:
short_direct_normal = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith angle)
Measurements:sgpsirs20sE21.a0:
  • inst_direct_normal
sgpsirsE21.b1:
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)

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