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Modelling of cirrus clouds – Part 1a: Model description and validation

Spichtinger, Peter and Gierens, Klaus (2009) Modelling of cirrus clouds – Part 1a: Model description and validation. Atmospheric Chemistry and Physics, 9, pp. 685-706.

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A double-moment bulk microphysics scheme for modelling cirrus clouds including explicit impact of aerosols on different types of nucleation mechanism is described. Process rates are formulated in terms of generalised moments of the underlying a priori size distributions in order to allow simple switching between various distribution types. The scheme has been implemented into a simple box model and into the anelastic non-hydrostatic model EULAG. The new microphysics is validated against simulations with detailed microphysics for idealised process studies and for a well documented case of arctic cirrostratus. Additionally, the formation of ice crystals with realistic background aerosol concentration is modelled and the effect of ambient pressure on homogeneous nucleation is investigated in the box model. The model stands all tests and is thus suitable for cloudresolving simulations of cirrus clouds.

Document Type:Article
Title:Modelling of cirrus clouds – Part 1a: Model description and validation
AuthorsInstitution or Email of Authors
Spichtinger, PeterETH Zürich
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
In Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 685-706
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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