DQRID : D061024.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
08/17/2006131011/01/20060700Does not affect quality
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Subject:
NIM/TSI/M1 - Reprocessed and Corrected: Shadowband glare
DataStreams:nimtsiskycoverM1.b1
Description:
DATA REPROCESSED and CORRECTED: 

Due to the high aerosol conditions at Niamey, the TSI appeared to be beyond the limits of 
processing the color JPEG image into cloud fraction values. The processed images indicate 
an opaque sky cover, even in the absence of clouds. The problem was corrected by 
removing the neutral density filter from the lens and re-adjusting the sky filter values.

The data were archived in January 2017. Please retrieve the reprocessed data for use in 
your analysis. 

ORIGINAL DQR CATEGORY: Yellow (Suspect)

REPROCESSED and CORRECTED DATA ARCHIVED:2017-01

REPROCESS IDENTIFICATION NUMBER: RID 313

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--- ORIGINAL DQR DESCRIPTION ---
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When the neutral density filter was removed from the lens, the reflection of the sun from 
the smooth shadowband strip became much brighter causing a glare in the image on clear 
days. To minimize this reflection, a rough surface (the "fuzzy" side of an adhesive velco 
strip) was placed along the length of the shadowband.
Suggestions: 
Measurements:nimtsiskycoverM1.b1:
  • region.sun.count
  • sunny
  • sun.strength
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