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| Titel |
A single parameter representation of hygroscopic growth and cloud condensation nucleus activity – Part 3: Including surfactant partitioning |
| VerfasserIn |
M. D. Petters, S. M. Kreidenweis |
| 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 ; 13, no. 2 ; Nr. 13, no. 2 (2013-01-28), S.1081-1091 |
| Datensatznummer |
250017617
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| Publikation (Nr.) |
 copernicus.org/acp-13-1081-2013.pdf |
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| Zusammenfassung |
| Atmospheric particles can serve as cloud condensation nuclei in the
atmosphere. The presence of surface active compounds in the particle may
affect the critical supersaturation that is required to activate a particle.
Modelling surfactants in the context of Köhler theory, however, is
difficult because surfactant enrichment at the surface implies that a stable
radial concentration gradient must exist in the droplet. In this study, we
introduce a hybrid model that accounts for partitioning between the bulk and
surface phases in the context of single parameter representations of cloud
condensation nucleus activity. The presented formulation incorporates
analytical approximations of surfactant partitioning to yield a set of
equations that maintain the conceptual and mathematical simplicity of the
single parameter framework. The resulting set of equations allows users of
the single parameter model to account for surfactant partitioning by
applying minor modifications to already existing code. |
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