Modelling light scattering by absorbing smooth and slightly rough facetted particles

被引：6

作者：

Hesse, E. ^{[1
]}

Collier, C. T. ^{[1
]}

Penttila, A. ^{[2
]}

Nousiainen, T. ^{[3
]}

Ulanowski, Z. ^{[1
]}

Kaye, P. H. ^{[1
]}

机构：

[1] Univ Hertfordshire, Ctr Atmospher & Instrumentat Res, Hatfield AL10 9AB, Herts, England

[2] Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland

[3] Finnish Meteorol Inst, FI-00101 Helsinki, Finland

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2015年 / 157卷

基金：

芬兰科学院; 英国自然环境研究理事会;

关键词：

Light scattering; Diffraction; Absorbing facetted particle; Rough particle; ATMOSPHERIC ICE PARTICLES; CRYSTALS; APPROXIMATION; DIFFRACTION; SIZE;

D O I：

10.1016/j.jqsrt.2015.02.004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method for approximating light scattering properties of strongly absorbing facetted particles which are large compared to the wavelength is presented. It consists in adding the approximated external diffraction and reflection far fields and is demonstrated for a smooth hexagonal prism. This computationally fast method is extended towards prisms with slightly rough surfaces by introducing a surface scaling factor in order to account for edge effects on subfacets forming the rough surface. These effects become more pronounced with decreasing subfacet dimension to wavelength ratio. Azimuthally resolved light scattering patterns, phase functions and degree of linear polarisation obtained by this method and by the discrete dipole approximation are compared for hexagonal prisms with smooth and slightly rough surfaces, respectively. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：71 / 80

页数：10

共 33 条

[1]

[Anonymous], 1991, THEORY WAVE SCATTERI

[2] A review of the light scattering properties of cirrus [J].

Baran, Anthony J. .

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2009, 110 (14-16) :1239-1260

[3] Improvements in Shortwave Bulk Scattering and Absorption Models for the Remote Sensing of Ice Clouds [J].

Baum, Bryan A. ;

Yang, Ping ;

Heymsfield, Andrew J. ;

Schmitt, Carl G. ;

Xie, Yu ;

Bansemer, Aaron ;

Hu, Yong-Xiang ;

Zhang, Zhibo .

JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY, 2011, 50 (05) :1037-1056

[4] The impact of ice particle roughness on the scattering phase matrix [J].

Baum, Bryan A. ;

Yang, Ping ;

Hu, Yong-Xiang ;

Feng, Qian .

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2010, 111 (17-18) :2534-2549

[5] Scattering and absorption of light by ice particles: Solution by a new physical-geometric optics hybrid method [J].

Bi, Lei ;

Yang, Ping ;

Kattawar, George W. ;

Hu, Yongxiang ;

Baum, Bryan A. .

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2011, 112 (09) :1492-1508

[6]

Bohren H.D.R., 1998, ABSORPTION SCATTERIN

[7]

Born M., 1999, PRINCIPLES OPTICS

[8] A 3D implementation of ray tracing combined with diffraction on facets: Verification and a potential application [J].

Clarke, AJM ;

Hesse, E ;

Ulanowski, Z ;

Kaye, PH .

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2006, 100 (1-3) :103-114

[9]

Collier CT, P C EL LIGHT SCATT 1

[10] Modelling diffraction by facetted particles [J].

Hesse, E. ;

Macke, A. ;

Havemann, S. ;

Baran, A. J. ;

Ulanowski, Z. ;

Kaye, P. H. .

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2012, 113 (05) :342-347

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