From Glossary of Meteorology
Revision as of 14:36, 20 February 2012 by imported>Perlwikibot
(Also called Koschmieder's law.) A version of the radiative transfer equation that predicts the luminance due to airlight (La) in the direction of a perfectly black object near the horizon.
La can be used to calculate daytime visual range. For horizon sky luminance Lh, horizontally uniform extinction coefficient σ, and distance x from the observer:
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