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| Titel |
Bacteria in the ECHAM5-HAM global climate model |
| VerfasserIn |
A. Sesartic, U. Lohmann, T. Storelvmo |
| 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 ; 12, no. 18 ; Nr. 12, no. 18 (2012-09-25), S.8645-8661 |
| Datensatznummer |
250011470
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| Publikation (Nr.) |
 copernicus.org/acp-12-8645-2012.pdf |
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| Zusammenfassung |
| Some bacteria are among the most active ice nuclei found in nature due to the
ice nucleation active proteins on their surface, which serve as active sites
for ice nucleation. Their potential impact on clouds and precipitation is not
well known and needs to be investigated. Bacteria as a new aerosol species
were introduced into the global climate model (GCM) ECHAM5-HAM. The inclusion
of bacteria acting as ice nuclei in a GCM leads to only minor changes in
cloud formation and precipitation on a global level, however, changes in the
liquid water path and ice water path are simulated, specifically in the
boreal regions where tundra and forests act as sources of bacteria. Although
bacteria contribute to heterogeneous freezing, their impact is reduced by
their low numbers compared to other heterogeneous IN. This result confirms
the outcome of several previous studies. |
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