Data Quality Reports for Session: 103220 User: ronmiller Completed: 12/13/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060419.1NIM/TSI/M1 - Reprocess: Data processing problemnimtsicldmaskM1.a1, nimtsiskycoverM1.b1


DQRID : D060419.1
Start DateStart TimeEnd DateEnd Time
11/24/2005000009/19/20061729
Subject:
NIM/TSI/M1 - Reprocess: Data processing problem
DataStreams:nimtsicldmaskM1.a1, nimtsiskycoverM1.b1
Description:
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. Several attempts to adjust 
the sky filter values used to process the images did not yielded the desired results. 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 can be reprocessed.
Measurements:nimtsicldmaskM1.a1:
  • PNG data stream - documentation not supported(png)

nimtsiskycoverM1.b1:
  • Pixel count: number total thin(count.thin)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Sunshine meter(sunny)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Percent opaque cloud(percent.opaque)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)


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