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Interference phenomena at backscattering by ice crystals of cirrus clouds A. G. Borovoi, N. V. Kustova, A. V. Konoshonkin

By: Borovoi, Anatoli GContributor(s): Kustova, Natalia V | Konoshonkin, Alexander VMaterial type: ArticleArticleSubject(s): перистые облака | ледяные кристаллы | интерференционные явления | обратное рассеяниеGenre/Form: статьи в журналах Online resources: Click here to access online In: Optics express Vol. 23, № 19. P. 24557-24571Abstract: It is shown that light backscattering by hexagonal ice crystals of cirrus clouds is formed within the physical-optics approximation by both diffraction and interference phenomena. Diffraction determines the angular width of the backscattering peak and interference produces the interference rings inside the peak. By use of a simple model for distortion of the pristine hexagonal shape, we show that the shape distortion leads to both oscillations of the scattering (Mueller) matrix within the backscattering peak and to a strong increase of the depolarization, color, and lidar ratios needed for interpretation of lidar signals.
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Библиогр.: 28 назв.

It is shown that light backscattering by hexagonal ice crystals of cirrus clouds is formed within the physical-optics approximation by both diffraction and interference phenomena. Diffraction determines the angular width of the backscattering peak and interference produces the interference rings inside the peak. By use of a simple model for distortion of the pristine hexagonal shape, we show that the shape distortion leads to both oscillations of the scattering (Mueller) matrix within the backscattering peak and to a strong increase of the depolarization, color, and lidar ratios needed for interpretation of lidar signals.

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