Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus Clouds
The depolarization ratio and backscattering cross sections have been calculated for shapes and size of ice crystals that are typical in cirrus clouds. The calculations are performed in the physical-optics approximation. It is shown that the depolarization ratio approaches some constant when the size...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/13/10/1551 |
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| author | Natalia Kustova Alexander Konoshonkin Victor Shishko Dmitry Timofeev Ilya Tkachev Zhenzhu Wang Anatoli Borovoi |
| author_facet | Natalia Kustova Alexander Konoshonkin Victor Shishko Dmitry Timofeev Ilya Tkachev Zhenzhu Wang Anatoli Borovoi |
| author_sort | Natalia Kustova |
| collection | DOAJ |
| description | The depolarization ratio and backscattering cross sections have been calculated for shapes and size of ice crystals that are typical in cirrus clouds. The calculations are performed in the physical-optics approximation. It is shown that the depolarization ratio approaches some constant when the size of the crystals becomes much larger than the incident wavelength. For the transparent ice crystals, when absorption is absent, the magnitude of this constant strongly depends on crystal shapes. This fact allows inferring the crystal shape from magnitudes of the depolarization ratio in lidar signals. For the lidar wavelengths, where absorption of light is considerable, the depolarization ratio of lidar signals can be used for inferring crystal sizes. Such results are important for the development of algorithms interpreting the signals obtained by both ground-based and space-borne lidars. |
| first_indexed | 2024-03-09T20:45:12Z |
| format | Article |
| id | doaj.art-e613ce9e69cd4e74b6f14ab7d38ecf21 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T20:45:12Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-e613ce9e69cd4e74b6f14ab7d38ecf212023-11-23T22:49:55ZengMDPI AGAtmosphere2073-44332022-09-011310155110.3390/atmos13101551Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus CloudsNatalia Kustova0Alexander Konoshonkin1Victor Shishko2Dmitry Timofeev3Ilya Tkachev4Zhenzhu Wang5Anatoli Borovoi6V.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Sq. 1, 634055 Tomsk, RussiaV.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Sq. 1, 634055 Tomsk, RussiaV.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Sq. 1, 634055 Tomsk, RussiaV.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Sq. 1, 634055 Tomsk, RussiaV.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Sq. 1, 634055 Tomsk, RussiaKey Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaV.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Sq. 1, 634055 Tomsk, RussiaThe depolarization ratio and backscattering cross sections have been calculated for shapes and size of ice crystals that are typical in cirrus clouds. The calculations are performed in the physical-optics approximation. It is shown that the depolarization ratio approaches some constant when the size of the crystals becomes much larger than the incident wavelength. For the transparent ice crystals, when absorption is absent, the magnitude of this constant strongly depends on crystal shapes. This fact allows inferring the crystal shape from magnitudes of the depolarization ratio in lidar signals. For the lidar wavelengths, where absorption of light is considerable, the depolarization ratio of lidar signals can be used for inferring crystal sizes. Such results are important for the development of algorithms interpreting the signals obtained by both ground-based and space-borne lidars.https://www.mdpi.com/2073-4433/13/10/1551physical optics approximationlight scatteringbackscatteringMueller matrixdepolarizationcirrus clouds |
| spellingShingle | Natalia Kustova Alexander Konoshonkin Victor Shishko Dmitry Timofeev Ilya Tkachev Zhenzhu Wang Anatoli Borovoi Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus Clouds Atmosphere physical optics approximation light scattering backscattering Mueller matrix depolarization cirrus clouds |
| title | Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus Clouds |
| title_full | Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus Clouds |
| title_fullStr | Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus Clouds |
| title_full_unstemmed | Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus Clouds |
| title_short | Depolarization Ratio for Randomly Oriented Ice Crystals of Cirrus Clouds |
| title_sort | depolarization ratio for randomly oriented ice crystals of cirrus clouds |
| topic | physical optics approximation light scattering backscattering Mueller matrix depolarization cirrus clouds |
| url | https://www.mdpi.com/2073-4433/13/10/1551 |
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