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Analytical treatment of ice sublimation and test of sublimation parameterisations in two�moment ice microphysics models

Gierens, Klaus and Bretl, Sebastian (2009) Analytical treatment of ice sublimation and test of sublimation parameterisations in two�moment ice microphysics models. Atmospheric Chemistry and Physics, 9, pp. 7481-7490.

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Official URL: http://www.atmos-chem-phys.net/9/7481/2009/

Abstract

We derive an analytic solution to the spectral growth/sublimation equation for ice crystals and apply it to idealised cases. The results are used to test parameterisations of the ice sublimation process in two�moment bulk microphysics models. Although it turns out that the relation between number loss fraction and mass loss fraction is not a function since it is not unique, it seems that a functional parameterisation is the best that one can do in a bulk model. Testing a more realistic case with humidity oscillations shows that artificial crystal loss can occur in simulations of mature cirrus clouds with relative humidity fluctuating about ice saturation.

Document Type:Article
Additional Information:Contribution to DLR Project CATS
Title:Analytical treatment of ice sublimation and test of sublimation parameterisations in two�moment ice microphysics models
Authors:
AuthorsInstitution or Email of Authors
Gierens, KlausUNSPECIFIED
Bretl, SebastianUNSPECIFIED
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. 7481-7490
Status:Published
Keywords:ice microphysics, sublimation, numerical bulk cloud microphysics models
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Dr.rer.nat. Klaus Martin Gierens
Deposited On:09 Nov 2009 12:38
Last Modified:12 Dec 2013 20:43

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