Model for optical forward scattering by nonspherical raindrops

Details Model for optical forward scattering by nonspherical raindrops Model for optical forward scattering by nonspherical raindrops

2002-09-27

arxiv.org/abs/physics/0209095v1

Applied Optics, Vol. 41 (24) : 5130-5141, 2002

Physics

Atmospheric and Oceanic Physics

12 pages, 16 figures

Scientific paper

10.1364/AO.41.005130

We describe a numerical model for the interaction of light with large raindrops using realistic nonspherical drop shapes. We apply geometrical optics and a Monte Carlo technique to perform ray traces through the drops. We solve the problem of diffraction independently by approximating the drops with areaequivalent ellipsoids. Scattering patterns are obtained for different polarizations of the incident light. They exhibit varying degrees of asymmetry and depolarization that can be linked to the distortion and thus the size of the drops. The model is extended to give a simplified long-path integration.

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