Atmospheric Corrections For Satellite Water Quality Studies

Kenneth R. Piech; John R. Schott

doi:10.1117/12.964563

1 March 1974 Atmospheric Corrections For Satellite Water Quality Studies

Kenneth R. Piech, John R. Schott

Proceedings Volume 0051, Scanners and Imagery Systems for Earth Observation; (1974) https://doi.org/10.1117/12.964563
Event: Acquisition and Analysis of Pictorial Data, 1974, San Diego, United States

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.

Citation Download Citation

Kenneth R. Piech and John R. Schott "Atmospheric Corrections For Satellite Water Quality Studies", Proc. SPIE 0051, Scanners and Imagery Systems for Earth Observation, (1 March 1974); https://doi.org/10.1117/12.964563

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