Data Quality Reports for Session: 109208 User: barnard Completed: 12/03/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050420.4SGP/SIRS/E13 - Adjust Direct Normal Irradiancesgp15swfanalsirs1longE13.c1, sgp1swfanalsirs1longE13.c1, sgpsirsE13.00, sgpsirsE13.01
D050502.8SGP/SIRS/E13 - SWFANAL Data description error sgp15swfanalsirs1longE13.c1, sgp1swfanalsirs1longE13.c1


DQRID : D050420.4
Start DateStart TimeEnd DateEnd Time
08/03/2000133008/15/20011500
Subject:
SGP/SIRS/E13 - Adjust Direct Normal Irradiance
DataStreams:sgp15swfanalsirs1longE13.c1, sgp1swfanalsirs1longE13.c1, sgpsirsE13.00, sgpsirsE13.01
Description:
Direct normal broadband shortwave irradiance measured by NIP s/n 30585E6 was found to have 
a 1.76% negative bias when compared in-situ with absolute cavity radiometer measurements 
taken on August 21, 2000.  The estimated measurement uncertainty of the calibration of 
NIP s/n 30585E6 on July 18, 2000 was -2.2% to +2.8%.  

Data from NIP s/n 30585E6 can be adjusted according to the in-situ comparisons to reduce 
the apparent measurement bias.
Measurements:sgpsirsE13.01:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgp15swfanalsirs1longE13.c1:
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)

sgp1swfanalsirs1longE13.c1:
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)

sgpsirsE13.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D050502.8
Start DateStart TimeEnd DateEnd Time
10/01/1995000010/28/20032359
Subject:
SGP/SIRS/E13 - SWFANAL Data description error
DataStreams:sgp15swfanalsirs1longE13.c1, sgp1swfanalsirs1longE13.c1
Description:
The long name attribute for the cloud effect fields incorrectly
defines the cloud effect to be the difference between the 
clearskyfit and measured values:
   
"Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ;
   
The cloud effects are correctly calculated by subtracting the
irradiance calculated in the clear sky fit from the measured 
irradiance.
   
"Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ;
   
NOTE: this is just a documentation error.  The data are correctly
calculated.
Measurements:sgp15swfanalsirs1longE13.c1:
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)

sgp1swfanalsirs1longE13.c1:
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)


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