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A. Deepak Publ.
In:
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
Publikationsdatum:
2020-04-17
Beschreibung:
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.
Materialart:
Book chapter
,
NonPeerReviewed
Format:
text
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