Light scattering by ice crystals of cirrus clouds: From exact numerical methods to physical-optics approximation

被引：35

作者：

Konoshonkin, Alexander ^{[1
,2
]}

Borovoi, Anatoli ^{[1
]}

Kustova, Natalia ^{[1
]}

Okamoto, Hajime ^{[3
]}

Ishimoto, Hiroshi ^{[4
]}

Grynko, Yevgen ^{[5
]}

Foerstner, Jens ^{[5
]}

机构：

[1] RAS, VE Zuev Inst Atmospher Opt, SB, Academician Zuev Sq 1, Tomsk 634055, Russia

[2] Tomsk State Univ, 36 Lenin Ave, Tomsk 634050, Russia

[3] Kyushu Univ, Res Inst Appl Mech, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan

[4] Meteorol Res Inst, Nagamine 1-1, Tsukuba, Ibaraki 3050052, Japan

[5] Univ Paderborn, Dept Elect Engn, Warburger Str 100, D-33098 Paderborn, Germany

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2017年 / 195卷

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

Atmospheric scattering; Diffraction; Ice crystal phenomena; lidar; DISCRETE DIPOLE APPROXIMATION; TIME-DOMAIN SOLUTION; DIELECTRIC PARTICLES; NONSPHERICAL PARTICLES; SINGLE-SCATTERING; T-MATRIX; BACKSCATTERING; CLIMATE; CALIPSO; LARGER;

D O I：

10.1016/j.jqsrt.2016.12.024

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The problem of light scattering by ice crystals of cirrus clouds is considered in the case of a hexagonal ice plate with different distributions over crystal orientations. The physical-optics approximation based on (E, M)-diffraction theory is compared with two exact numerical methods: the finite difference time domain (FDTD) and the discontinuous Galerldn time domain (DGTD) in order to estimate its accuracy and limits of applicability. It is shown that the accuracy of the physical-optics approximation is estimated as 95% for the averaged backscattering Mueller matrix for particles with size parameter more than 120. Furthermore, the simple expression that allows one to estimate the minimal number of particle orientations required for appropriate spatial averaging has been derived. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：132 / 140

页数：9

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