DQRID : D090506.1
Start DateStart TimeEnd DateEnd Time
04/22/2009013306/30/20090214
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Subject:
TWP/TSI/C1 - Shadowband Misalignment
DataStreams:twptsiskycoverC1.b1
Description:
When the TSI was reinstalled on 4/22/2009, the shadowband was aligned relative to the 
enclosure but either the camera arm & housing was not plumb or the enclosure was not properly 
aligned with true north. This was corrected on 6/30 at solar noon.
Suggestions: 
Measurements:twptsiskycoverC1.b1:
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Percentage thin cloud(percent.thin)
  • Relative \'strength\' of direct sun(sun.strength)
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