On the parameterization of autoconversion. Effects of small-scale turbulent motions

Certain properties of the stochastic collection equation solutions have been studied using De Almeida turbulent collision efficiencies. Under this assumption, results show an important impact of small-scale turbulent motions on initial drop spectrum evolution. A parameterization of the autoconversio...

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Bibliographic Details
Published in:Atmospheric research 1995, Vol.38 (1), p.21-27
Main Authors: Carrioó, G.G., Levi, L.
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Geophysics. Techniques, methods, instrumentation and models
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Summary:Certain properties of the stochastic collection equation solutions have been studied using De Almeida turbulent collision efficiencies. Under this assumption, results show an important impact of small-scale turbulent motions on initial drop spectrum evolution. A parameterization of the autoconversion rate is obtained for levels of turbulence representative of the first stages of cloud development. Evolving spectra have shown some interesting regularities that allow a comparison with those observed by Berry for a non-turbulent kernel.
ISSN:0169-8095
1873-2895
DOI:10.1016/0169-8095(94)00086-S