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| Titel |
Representing time-dependent freezing behaviour in immersion mode ice nucleation |
| VerfasserIn |
R. J. Herbert, B. J. Murray, T. F. Whale, S. J. Dobbie, J. D. Atkinson |
| 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 ; 14, no. 16 ; Nr. 14, no. 16 (2014-08-22), S.8501-8520 |
| Datensatznummer |
250118968
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| Publikation (Nr.) |
 copernicus.org/acp-14-8501-2014.pdf |
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| Zusammenfassung |
| In order to understand the impact of ice formation in clouds, a quantitative
understanding of ice nucleation is required, along with an accurate and
efficient representation for use in cloud resolving models. Ice nucleation
by atmospherically relevant particle types is complicated by interparticle
variability in nucleating ability, as well as a stochastic, time-dependent,
nature inherent to nucleation. Here we present a new and computationally
efficient Framework for Reconciling Observable Stochastic Time-dependence
(FROST) in immersion mode ice nucleation. This framework is underpinned by
the finding that the temperature dependence of the nucleation-rate
coefficient controls the residence-time and cooling-rate dependence of
freezing. It is shown that this framework can be used to reconcile
experimental data obtained on different timescales with different
experimental systems, and it also provides a simple way of representing the
complexities of ice nucleation in cloud resolving models. The routine
testing and reporting of time-dependent behaviour in future experimental
studies is recommended, along with the practice of presenting normalised
data sets following the methods outlined here. |
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