Aerosol partitioning in natural mixed‐phase clouds

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Authors
Henning, Silvia
Bojinski, Stephan
Diehl, Karoline
Ghan, Steven
Nyeki, Stephan
Wurzler, Sabine
Baltensperger, Urs
Author (Corporation)
Publication date
16.03.2004
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01A - Journal article
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Geophysical Research Letters
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Volume
31
Issue / Number
6
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Publisher / Publishing institution
Wiley
Place of publication / Event location
Hoboken
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Abstract
In situ aerosol and cloud drop microphysical measurements at a high-alpine site are used to investigate aerosol partitioning between cloud and interstitial phases in natural, mid-latitude, mixed-phase clouds. Measurements indicate a decrease in the activated aerosol fraction (FN) for particle diameters dP > 100 nm with cloud temperature from FN ~ 0.54 in summer liquid-phase clouds to FN ~ 0.08 in winter mixed-phase clouds. The latter may be attributed to the Bergeron-Findeisen mechanism whereby ice crystals grow at the expense of liquid water drops, releasing formerly activated aerosols back into the interstitial phase. This provides a means to distinguish the indirect effects of aerosols on drops and ice crystals.
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550 - Geowissenschaften
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0094-8276
1944-8007
Language
English
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No
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Published
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Peer review of the complete publication
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Closed
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Citation
HENNING, Silvia, Stephan BOJINSKI, Karoline DIEHL, Steven GHAN, Stephan NYEKI, Ernest WEINGARTNER, Sabine WURZLER und Urs BALTENSPERGER, 2004. Aerosol partitioning in natural mixed‐phase clouds. Geophysical Research Letters. 16 März 2004. Bd. 31, Nr. 6. DOI 10.1029/2003gl019025. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46775