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| Titel |
Modelling of cirrus clouds – Part 1b: Structuring cirrus clouds by dynamics |
| VerfasserIn |
P. Spichtinger, K. M. Gierens |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 9, no. 2 ; Nr. 9, no. 2 (2009-01-28), S.707-719 |
| Datensatznummer |
250006751
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| Publikation (Nr.) |
 copernicus.org/acp-9-707-2009.pdf |
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| Zusammenfassung |
| A recently developed and validated bulk microphysics scheme for
modelling cirrus clouds (Spichtinger
and Gierens, 2009), implemented into
the anelastic non-hydrostatic model EULAG is used for
investigation of the impact of dynamics on the evolution of an
arctic cirrostratus. Sensitivity studies are performed, using
variation of large-scale updraughts as well as addition of
small-scale temperature fluctuations and wind shear. The results
show the importance of sedimentation of ice crystals on cloud
evolution. Due to non-linear processes like homogeneous nucleation
situations can arise where small changes in the outer parameters
have large effects on the resulting cloud structure. In-cloud ice
supersaturation is a common feature of all our simulations, and we
show that dynamics is as least as important for its appearance than
is microphysics. |
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