OceanRep
Scattering of light by large spherical, spheroidal, and circular cylindrical scatterers: Geometrical optics approximation versus T-matrix method.
Macke, Andreas, Mishchenko, M. I., Carlson, B. E. and Muinonen, K. (1997) Scattering of light by large spherical, spheroidal, and circular cylindrical scatterers: Geometrical optics approximation versus T-matrix method. In: IRS 96: Current problems in atmospheric radiation. , ed. by Smith, W. L. and Stamnes, K.. A. Deepak Publ., Hampton, Va., pp. 822-825. ISBN 0-937194-39-5
Text
Macke_Scattering of light by large spherical.pdf - Reprinted Version Restricted to Registered users only Download (3MB) | Contact |
Abstract
We report comparisons of light scattering computations
for large, randomly oriented non-spherical particles
based on the classical geometrical optics approximation
and the exact T-matrix method. Particle
shapes used for this study are spheroids and finite
circular cylinders in random orientation. Our selections
for wavelengths and refractive indices correspond
to the following situations: scattering of visible
radiation by dust-like particles, and scattering of nearinfrared
radiation by water-ice crystals. We show that
in most cases the geometrical optics approximation
is (much) more accurate for non-spherical particles
than for surface-equivalent spheres and can be used
in phase function computations (but not in polarization
computations) for size parameters as small as 60.
Differences in the single scattering albedo between geometrical
optics and T-matrix results are surprisingly
small, even for small size parameters.
Document Type: | Book chapter |
---|---|
Keywords: | light scattering, geometrical optics, T-matrix method |
Research affiliation: | OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-ME Maritime Meteorology |
Publisher: | A. Deepak Publ. |
Date Deposited: | 18 Feb 2008 17:23 |
Last Modified: | 17 Apr 2020 07:34 |
URI: | https://oceanrep.geomar.de/id/eprint/891 |
Actions (login required)
View Item |
Copyright 2023 | GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel | All rights reserved
Questions, comments and suggestions regarding the GEOMAR repository are welcomed
at bibliotheksleitung@geomar.de !