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| Titel |
Commentary on cloud modelling and the mass accommodation coefficient of water |
| VerfasserIn |
A. Laaksonen, T. Vesala, M. Kulmala  , P. M. Winkler, P. E. Wagner |
| 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 ; 5, no. 2 ; Nr. 5, no. 2 (2005-02-14), S.461-464 |
| Datensatznummer |
250002356
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| Publikation (Nr.) |
 copernicus.org/acp-5-461-2005.pdf |
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| Zusammenfassung |
| The mass accommodation coefficient of water is a quantity for
which different experimental techniques have yielded conflicting values
in the range 0.04-1. From the viewpoint of cloud modelling, this is an unfortunate
situation, since the value of the mass accommodation coefficient
affects the model results, e.g. the number concentration of activated
cloud droplets. In this commentary we note that in cloud modelling, the primary quantity
of interest is the droplet growth rate rather than the mass accommodation coefficient, and
that experimental investigations of droplet growth rates provide more direct verification
of cloud models than do measurements of the mass
accommodation coefficient.
Furthermore, we argue that the droplet growth rates calculated in cloud model studies are
consistent with experimental results obtained so far only if a mass accommodation
coefficient of unity is applied. |
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