Light Backscattering Properties of Distorted Hexagonal Atmospheric Ice Particles within the Physical Optics Approximation

被引：2

作者：

Timofeev, D. N. ^{[1
]}

Konoshonkin, A. V. ^{[1
,2
]}

Kustova, N. V. ^{[1
]}

Shishko, V. A. ^{[1
]}

机构：

[1] Russian Acad Sci, VE Zuev Inst Atmospher Opt, Siberian Branch, Tomsk 634055, Russia

[2] Natl Res Tomsk State Univ, Tomsk 634050, Russia

来源：

ATMOSPHERIC AND OCEANIC OPTICS | 2022年 / 35卷 / 02期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

light backscattering; cirrus clouds; ice particles; shape distortion; physical optics; CIRRUS CLOUDS; SINGLE-SCATTERING; CRYSTALS; ABSORPTION; ALGORITHM; MATRICES;

D O I：

10.1134/S1024856022020130

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Light backscattering matrices are calculated within the physical optics approximation for hexagonal atmospheric ice particles distorted in different ways for the case of arbitrary spatial orientation and single scattering. A hexagonal prism with a height of 31.62 mu m and an external diameter of 22.14 mu m, which is typical for "column"-type particles observed in cirrus clouds, is chosen as a basic geometric shape. Three shape distortion methods for the particles are used: tilt, convexity and concavity; the angle of distortion varies from 0 degrees to 50 degrees for every particle type. The wavelength of incident radiation is 1.064 mu m. The calculation has shown a sharp decrease in the backscattering cross section with an increase in the angle of distortion for all particle types under study.

引用

页码：158 / 163

页数：6

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