Airlight formula

From Glossary of Meteorology
Revision as of 13:36, 20 February 2012 by imported>Perlwikibot
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

airlight formula

(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:

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact [email protected]. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.