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13 December 2018 Numerical study of extinction matrix in cirrus clouds
Alexander V. Konoshonkin, Anatoli G. Borovoi, Natalia V. Kustova, Victor A. Shishko, Dmitry N. Timofeev, Zhenzhu Wang, Dong Liu, Chenbo Xie
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Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108335U (2018) https://doi.org/10.1117/12.2504571
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation
Abstract
The paper presents the extinction matrix for an ensemble of ice hexagonal plates and columns. The calculations were carried out for particles with characteristic sizes from 10 to 100 μm, for wavelengths from 0.3 to 10 μm, assuming the gamma distribution over particles size width parameter μ<4. It is shown that for the visible range of wavelengths, the extinction matrix of an ensemble of atmospheric ice crystals is unit with a coefficient being equal to the double area of the particle projection. It is also shown that in the IR region this representation of the extinction matrix is valid only for hexagonal columns, bullets and similar crystals with a characteristic size larger than 20 μm for wavelengths less than 8 μm.
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Alexander V. Konoshonkin, Anatoli G. Borovoi, Natalia V. Kustova, Victor A. Shishko, Dmitry N. Timofeev, Zhenzhu Wang, Dong Liu, and Chenbo Xie "Numerical study of extinction matrix in cirrus clouds", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108335U (13 December 2018); https://doi.org/10.1117/12.2504571
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KEYWORDS
Particles
Clouds
Light scattering
Scattering
Atmospheric particles
Crystals
Atmospheric optics
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