Specular scattering by preferentially oriented ice crystals

被引：9

作者：

Borovoi, Anatoli ^{[1
]}

Kustova, Natalia ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Atmospher Opt, Tomsk 634055, Russia

来源：

APPLIED OPTICS | 2009年 / 48卷 / 19期

基金：

俄罗斯基础研究基金会;

关键词：

CIRRUS CLOUDS; LIDAR;

D O I：

10.1364/AO.48.003878

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Scattered light for preferentially oriented ice crystals is divided into specular and diffuse components, where the specular scattering is created by horizontally oriented facets of fluttering crystals. The specular component for a fluttering thin plate modeling these crystals is found analytically. The solution obtained is a two-dimensional (2D) convolution of a geometric optics pattern depending only on flutter and an independent diffraction function. The geometric optics pattern is explicitly expressed through the probability density for particle tilts, and the diffraction function is taken in the Fraunhofer diffraction approximation. The 2D convolution calculated numerically reveals a cumulative enhancement of scattered light in the scattering domain center. Certain possibilities to retrieve both flutter parameters and particle sizes from the specular patterns are discussed. (C) 2009 Optical Society of America

引用

页码：3878 / 3885

页数：8

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