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Modelling of cirrus clouds – Part 1b: Structuring cirrus clouds by dynamics

Spichtinger, Peter and Gierens, Klaus (2009) Modelling of cirrus clouds – Part 1b: Structuring cirrus clouds by dynamics. Atmospheric Chemistry and Physics, 9, pp. 707-719.

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Abstract

A recently developed and validated bulk microphysics scheme for modelling cirrus clouds (Spichtinger and Gierens, 2009), implemented into the anelastic nonhydrostatic 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.

Document Type:Article
Title:Modelling of cirrus clouds – Part 1b: Structuring cirrus clouds by dynamics
Authors:
AuthorsInstitution or Email of Authors
Spichtinger, PeterETH Zürich
Gierens, KlausUNSPECIFIED
Date:2009
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:9
Page Range:pp. 707-719
Status:Published
Keywords:Cirrus clouds, Climate, Modelling
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Jana Freund
Deposited On:10 Feb 2009
Last Modified:12 Dec 2013 20:36

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