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

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Description

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.

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143 leaves: ill.

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Jacob, Mary Katherine May 1992.

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This thesis is part of the collection entitled: UNT Theses and Dissertations and was provided by UNT Libraries to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 14 times . More information about this thesis can be viewed below.

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  • Jacob, Mary Katherine

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Description

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.

Physical Description

143 leaves: ill.

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  • May 1992

Start & End Dates

  • 1988 - 1989

Added to The UNT Digital Library

  • March 9, 2015, 8:15 a.m.

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  • Sept. 6, 2017, 3:08 p.m.

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Citations, Rights, Re-Use

Jacob, Mary Katherine. Atmospheric Visibility Assessment for Urban Areas Using Photographic Slides and Optical Densitometry, thesis, May 1992; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc500484/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .