Data Quality Reports for Session: 104472 User: morris Completed: 02/22/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070206.1TWP/SKYRAD/C2 - Short direct normaltwpskyrad20sC2.a0, twpskyrad60sC2.b1


DQRID : D070206.1
Start DateStart TimeEnd DateEnd Time
01/31/2007022302/10/20070055
Subject:
TWP/SKYRAD/C2 - Short direct normal
DataStreams:twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:
The short_direct_normal (NIP) data are missing or incorrect due to instrument cable 
failure.  The cable was replaced.

The short_direct_normal can be calculated using the following relationship for shortwave 
radiometers:
global hemispheric = diffuse hemispheric + direct normal *cos (zenith angle)
Measurements:twpskyrad60sC2.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
twpskyrad20sC2.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)

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