Reflectance

From Glossary of Meteorology
Revision as of 16:46, 25 April 2012 by imported>Perlwikibot
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



reflectance

A general term referring to the radiation reflected from, or scattered back through, a given surface in response to radiation incident on the surface with the same wavelength or wavelength range.

Different definitions arise depending on the directionality of the radiation under consideration. Reflectance in terms of the ratio of reflected to incident irradiance is generally termed albedo, which may also be described in terms of the directional-hemispherical reflectance (when the incident irradiance is from a specific direction), or the bihemispherical reflectance (when the incident irradiance is diffuse). Reflectance of radiance from a specified incident direction into a specified reflected direction is termed the bidirectional reflectance, which may also be described by the bidirectional reflection function (BDRF), the bidirectional reflectance distribution function (BRDF), or the bidirectional reflectance factor.
See reflectivity.


Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. 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.