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7 December 2022 Solution of the light scattering problem by small atmospheric ice crystals by discrete dipole approximation and comparison with the physical optics approximation
Victor A. Shishko, Nadezhda V. Kan, Dmitriy N. Timofeev, Alexander V. Konoshonkin, Natalia V. Kustova, Aleksei V. Kozodoev, Anatoli G. Borovoi
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Proceedings Volume 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 123413W (2022) https://doi.org/10.1117/12.2645068
Event: 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2022, Tomsk, Russia
Abstract
The paper presents a solution to the problem of light scattering by small randomly oriented hexagonal ice crystals of cirrus clouds. The solution was obtained both within the discrete dipole approximation and within the physical optics approximation. The particle sizes ranged from 0.2 to 6 μm. The wavelength of the incident radiation is 0.532 μm, the refractive index is 1.3116. The results of the comparison of the solutions obtained within the framework of the discrete dipole approximation with the physical optics approximation are shown. It is found that the solutions are in good agreement, however, to solve the problem of light scattering in the vicinity of the backward direction, which is important for the interpretation of lidar data, it is necessary to continue the calculations by the discrete dipole approximation up to particle sizes of about 10 μm.
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Victor A. Shishko, Nadezhda V. Kan, Dmitriy N. Timofeev, Alexander V. Konoshonkin, Natalia V. Kustova, Aleksei V. Kozodoev, and Anatoli G. Borovoi "Solution of the light scattering problem by small atmospheric ice crystals by discrete dipole approximation and comparison with the physical optics approximation", Proc. SPIE 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 123413W (7 December 2022); https://doi.org/10.1117/12.2645068
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KEYWORDS
Light scattering
Particles
Atmospheric particles
Crystals
Scattering
Clouds
Numerical analysis
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