Data Quality Reports for Session: 110878 User: smayaki Completed: 03/05/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050218.4SGP/MFR10M/C1 - Dip in data at solar noonsgpmfr10mC1.00, sgpmfr10mC1.a0, sgpmfr10mC1.b1
D061016.5SGP/SWS/C1 - Reprocess: Temperature correction needed for InGaAs dark signal.sgpswsC1.b1


DQRID : D050218.4
Start DateStart TimeEnd DateEnd Time
09/01/2004000004/30/20050000
Subject:
SGP/MFR10M/C1 - Dip in data at solar noon
DataStreams:sgpmfr10mC1.00, sgpmfr10mC1.a0, sgpmfr10mC1.b1
Description:
On clear days there is a dip in the data (all channels) at solar noon that is more 
pronounced during the winter months.  While we currently don't know the cause of this dip, we 
believe it is related to reflections off the tower pole.  The working theory says at solar 
noon the north-south crossbar shades the tower pole cutting off reflections into the 
detector.  If true, this means data on either side of the dip are being enhanced by 
reflections and the data within the dip are actually "correct."  An experiment is being planned 
for next fall that will wrap the upper portion of the tower in a non-reflecting cloth.  
This should determine if the dip is related to reflections from the tower pole.
Measurements:sgpmfr10mC1.b1:
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
sgpmfr10mC1.a0:
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr10mC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

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DQRID : D061016.5
Start DateStart TimeEnd DateEnd Time
09/01/2006000011/15/20062359
Subject:
SGP/SWS/C1 - Reprocess: Temperature correction needed for InGaAs dark signal.
DataStreams:sgpswsC1.b1
Description:
A small temperature correction to the InGaAs dark signal is needed which could have a 
large impact on the clear sky radiance signal which is very small in the near-infrared.
Measurements:sgpswsC1.b1:
  • Calibrated spectrum(zen_spec_calib)

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