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| Titel |
An Arctic CCN-limited cloud-aerosol regime |
| VerfasserIn |
T. Mauritsen, J. Sedlar, M. Tjernström, C. Leck, M. Martin, M. Shupe, S. Sjogren, B. Sierau, P. O. G. Persson, I. M. Brooks, E. Swietlicki |
| 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 ; 11, no. 1 ; Nr. 11, no. 1 (2011-01-10), S.165-173 |
| Datensatznummer |
250009063
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| Publikation (Nr.) |
 copernicus.org/acp-11-165-2011.pdf |
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| Zusammenfassung |
| On average, airborne aerosol particles cool the Earth's surface directly by absorbing and scattering
sunlight and indirectly by influencing cloud reflectivity, life time, thickness or extent. Here we show
that over the central Arctic Ocean, where there is frequently a lack of aerosol particles upon which
clouds may form, a small increase in aerosol loading may enhance cloudiness thereby likely causing a
climatologically significant warming at the ice-covered Arctic surface. Under these low concentration
conditions cloud droplets grow to drizzle sizes and fall, even in the absence of collisions and coalescence,
thereby diminishing cloud water. Evidence from a case study suggests that interactions between aerosol,
clouds and precipitation could be responsible for attaining the observed low aerosol concentrations. |
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