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

Alexander Konoshonkin, Anatoli Borovoi, Natalia Kustova, Hajime Okamoto, Hiroshi Ishimoto, Yevgen Grynko, Jens Förstner

研究成果: Contribution to journalArticle査読

22 被引用数 (Scopus)

抄録

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 Galerkin 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.

本文言語英語
ページ(範囲)132-140
ページ数9
ジャーナルJournal of Quantitative Spectroscopy and Radiative Transfer
195
DOI
出版ステータス出版済み - 7 1 2017

All Science Journal Classification (ASJC) codes

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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