Pyramidal ice crystal scattering phase functions and concentric halos
Phase functions have been calculated using the Monte Carlo/geometric ray tracing method for single hexagonal pyramidal ice crystals (such as solid and hollow bullets) randomly oriented in space and horizontal plane, in order to study the concentric halo formations. Results from three dimensional...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1996-11-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/14/1192/1996/angeo-14-1192-1996.pdf |
| _version_ | 1818522151951532032 |
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| author | C. Liu P. R. Jonas C. P. R. Saunders |
| author_facet | C. Liu P. R. Jonas C. P. R. Saunders |
| author_sort | C. Liu |
| collection | DOAJ |
| description | Phase functions have been calculated using
the Monte Carlo/geometric ray tracing method for single hexagonal pyramidal ice
crystals (such as solid and hollow bullets) randomly oriented in space and
horizontal plane, in order to study the concentric halo formations. Results from
three dimensional model calculations show that 9° halo can be as bright as the
common 22° halo for pyramidal angle of 28°, and the 18°, 20°, 24° and 35°
halos cannot be seen due to the strong 22° halo domination in the scattering
phase function between 18° and 35°. For solid pyramidal ice crystals randomly
oriented horizontally, the 35° arc can be produced and its intensity depends on
the incident ray solar angle and the particle aspect ratio. |
| first_indexed | 2024-12-11T05:29:32Z |
| format | Article |
| id | doaj.art-5540a8b30d524688bcf39d8208a2b790 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-11T05:29:32Z |
| publishDate | 1996-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-5540a8b30d524688bcf39d8208a2b7902022-12-22T01:19:28ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761996-11-01141192119710.1007/s00585-996-1192-2Pyramidal ice crystal scattering phase functions and concentric halosC. Liu0P. R. Jonas1C. P. R. Saunders2Department of Pure and Applied Physics, UMIST, PO Box 88, Manchester M60 1QD, UKDepartment of Pure and Applied Physics, UMIST, PO Box 88, Manchester M60 1QD, UKDepartment of Pure and Applied Physics, UMIST, PO Box 88, Manchester M60 1QD, UKPhase functions have been calculated using the Monte Carlo/geometric ray tracing method for single hexagonal pyramidal ice crystals (such as solid and hollow bullets) randomly oriented in space and horizontal plane, in order to study the concentric halo formations. Results from three dimensional model calculations show that 9° halo can be as bright as the common 22° halo for pyramidal angle of 28°, and the 18°, 20°, 24° and 35° halos cannot be seen due to the strong 22° halo domination in the scattering phase function between 18° and 35°. For solid pyramidal ice crystals randomly oriented horizontally, the 35° arc can be produced and its intensity depends on the incident ray solar angle and the particle aspect ratio.https://www.ann-geophys.net/14/1192/1996/angeo-14-1192-1996.pdf |
| spellingShingle | C. Liu P. R. Jonas C. P. R. Saunders Pyramidal ice crystal scattering phase functions and concentric halos Annales Geophysicae |
| title | Pyramidal ice crystal scattering phase functions and concentric halos |
| title_full | Pyramidal ice crystal scattering phase functions and concentric halos |
| title_fullStr | Pyramidal ice crystal scattering phase functions and concentric halos |
| title_full_unstemmed | Pyramidal ice crystal scattering phase functions and concentric halos |
| title_short | Pyramidal ice crystal scattering phase functions and concentric halos |
| title_sort | pyramidal ice crystal scattering phase functions and concentric halos |
| url | https://www.ann-geophys.net/14/1192/1996/angeo-14-1192-1996.pdf |
| work_keys_str_mv | AT cliu pyramidalicecrystalscatteringphasefunctionsandconcentrichalos AT prjonas pyramidalicecrystalscatteringphasefunctionsandconcentrichalos AT cprsaunders pyramidalicecrystalscatteringphasefunctionsandconcentrichalos |