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Atmospheric Visibility Assessment for Urban Areas Using Photographic Slides and Optical Densitometry

The factors involved in calculating Standard Visual Range (SVR) are discussed, and a comparison is made between the visibility reported by airport observers and the photographic slide/ optical densitometer method of calculating SVR. Using slides of Houston, Texas, from the fall and winter of 1988-89, it was found that the altitude at which the contrast measurements are made significantly affects the SVR. Also an index for predicting high and low humidity was developed using the blue/red ratio of the log exposure of the sky, and sun/shade target condition.

Identiferoai:union.ndltd.org:unt.edu/info:ark/67531/metadc500484
Date05 1900
CreatorsJacob, Mary Katherine
ContributorsDickson, Kenneth L., McGregor, Kent M., Ferring, C. Reid, Atkinson, Samuel F.
PublisherUniversity of North Texas
Source SetsUniversity of North Texas
LanguageEnglish
Detected LanguageEnglish
TypeThesis or Dissertation
Format143 leaves: ill., Text
CoverageUnited States - Texas - Harris County - Houston, 1988-1989
RightsPublic, Jacob, Mary Katherine, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved.

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