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Proceedings Paper

Atmospheric Corrections For Satellite Water Quality Studies
Author(s): Kenneth R. Piech; John R. Schott
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Paper Abstract

Variations in the relative value of the blue and green reflectances of a lake can be correlated with important optical and biological parameters measured from surface vessels. Measurement of the relative reflectance values from color film imagery requires removal of atmospheric effects. Data processing is particularly crucial because: (1) lakes are the darkest objects in a scene; (2) minor reflec-tance changes can correspond to important physical changes; (3) lake systems extend over broad areas in which atmospheric conditions may fluctuate; (4) seasonal changes are of im-portance; and, (5) effects of weather are important, precluding flights under only ideal weather conditions. Data processing can be accomplished through microdensitometry of scene shadow areas. Measurements of reflectance ratios can be made to an accuracy of ±12%, sufficient to permit monitoring of important eutrophication indices.

Paper Details

Date Published: 1 March 1974
PDF: 6 pages
Proc. SPIE 0051, Scanners and Imagery Systems for Earth Observation, (1 March 1974); doi: 10.1117/12.964563
Show Author Affiliations
Kenneth R. Piech, Calspan Corporation (United States)
John R. Schott, Calspan Corporation (United States)

Published in SPIE Proceedings Vol. 0051:
Scanners and Imagery Systems for Earth Observation
D. Alexander Koso; Philip N. Slater; William L. Wolfe, Editor(s)

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