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
收藏
页码：158 / 163
页数：6
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