Light scattering by ice hexagonal tubes calculated within the geometrical optics approximation

Victor A. Shishko; Tatiana V. Russkova; Dmitriy N. Timofeev; Alexander V. Konoshonkin; Natalia V. Kustova; X. H. Zhu; Z. Wang

doi:10.1117/12.2690930

17 October 2023 Light scattering by ice hexagonal tubes calculated within the geometrical optics approximation

Victor A. Shishko, Tatiana V. Russkova, Dmitriy N. Timofeev, Alexander V. Konoshonkin, Natalia V. Kustova, X. H. Zhu, Z. Wang

Author Affiliations +

Proceedings Volume 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 127803I (2023) https://doi.org/10.1117/12.2690930
Event: XXIX International Symposium "Atmospheric and Ocean Optics, Atmospheric Physics", 2023, Moscow, Russian Federation

Abstract

Among the ice crystals of cirrus clouds, there are crystals of irregular shape. The imperfection of ice crystals can be both internal (e.g. inclusions such as air bubbles or soot particles) and external (e.g. surface roughness). Advanced studies showed that these imperfections have to be taken into account, because they affect significantly on the single-scattering properties of the ice crystal. The paper presents a solution to the problem of light scattering on ice crystal hexagonal tubes. This particle shape is the simplest model of a particle with internal inclusions. The model was based on the most common shape of a crystal observed in cirrus clouds - a hexagonal column with a ratio of base diameter to height of 0.69, in which a through hole was made, with a variable geometry. The solution was obtained within the geometrical optics approximation for the refractive index of ice 1.3116. The optical characteristics of hexagonal tubes are compared with non-convex particles (hollow columns) available in the database.

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Victor A. Shishko, Tatiana V. Russkova, Dmitriy N. Timofeev, Alexander V. Konoshonkin, Natalia V. Kustova, X. H. Zhu, and Z. Wang "Light scattering by ice hexagonal tubes calculated within the geometrical optics approximation", Proc. SPIE 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 127803I (17 October 2023); https://doi.org/10.1117/12.2690930

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