The dependence of the radiative characteristics of optically thick media on the shape of particles.

Kokhanovsky, A. A. and Macke, Andreas (1999) The dependence of the radiative characteristics of optically thick media on the shape of particles. Journal of Quantitative Spectroscopy and Radiative Transfer, 63 . pp. 393-407. DOI 10.1016/S0022-4073(99)00027-8.

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Abstract

The aim of this paper is to study the dependence of reflection, absorption, and transmission of light by optically thick, weakly absorbing disperse media on the shape of constituent particles. Single scattering by nonspherical particles is calculated in the framework of the Rayleigh and geometrical optics approximations. The ratio of the average volume to the average surface of particles and their volumetric concentration are kept constant. Thus, the extinction coefficient and the optical thickness of different media under consideration are the same. Calculations are performed for ice particles at wavelengths of 0.645, 1.24, 1.64, and 2.13 μm. The respective refractive indices range from 1.3082–i1.325×10−8 (weak absorption) to 1.2674–i5.65×10−4 (moderate absorption). The radiative characteristics are calculated in the framework of approximate analytical formulae valid for optically thick, weakly absorbing media.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-ME Maritime Meteorology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/S0022-4073(99)00027-8
ISSN: 0022-4073
Date Deposited: 18 Feb 2008 17:24
Last Modified: 05 Oct 2017 12:36
URI: http://oceanrep.geomar.de/id/eprint/2291

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