Equations for Estimating the Similarity Parameter from Radiation Measurements within Weakly Absorbing Optically Thick Clouds
Open Access
- 1 March 1986
- journal article
- Published by American Meteorological Society in Journal of the Atmospheric Sciences
- Vol. 43 (5) , 486-493
- https://doi.org/10.1175/1520-0469(1986)043<0486:efetsp>2.0.co;2
Abstract
Series expansions are derived for estimating the similarity parameter, which is a combination of the single-scattering albedo and asymmetry factor, from radiance measurement deep in the interior of a weary absorbing cloud. One expansion requires the measurements of the radiance in only the zenith and nadir directions, while a second uses the downward and upward irradiances. Numerical calculations show the estimates for the similarity parameter are very insensitive to different values of the asymmetry factor.Keywords
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