Heterogeneous formation of polar stratospheric clouds – Part 2: Nucleation of ice on synoptic scales

This paper provides compelling evidence for the importance of heterogeneous nucleation, likely on solid particles of meteoritic origin, and of small-scale temperature fluctuations, for the formation of ice particles in the Arctic stratosphere. During January 2010, ice PSCs (polar stratospheric cloud...

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Bibliographic Details
Published in:Atmospheric Chemistry and Physics
Main Authors: Engel, I., Luo, B.P., Pitts, M.C., Poole, L.R., Hoyle, C.R., Grooß, J.-U., Dörnbrack, Andreas, Peter, T.
Format: Other Non-Article Part of Journal/Newspaper
Language:English
Published: Copernicus Publications 2013
Subjects:
Wolkenphysik und Verkehrsmeteorologie
Arctic
Online Access:https://elib.dlr.de/85131/
https://elib.dlr.de/85131/1/AD%C3%B6rnbrackacp-13-10769-2013.pdf
http://www.atmos-chem-phys.net/13/10769/2013/acp-13-10769-2013.pdf
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Summary:This paper provides compelling evidence for the importance of heterogeneous nucleation, likely on solid particles of meteoritic origin, and of small-scale temperature fluctuations, for the formation of ice particles in the Arctic stratosphere. During January 2010, ice PSCs (polar stratospheric clouds) were shown by CALIPSO (Cloud- Aerosol Lidar and Infrared Pathfinder Satellite Observations) to have occurred on a synoptic scale (�1000 km dimension). CALIPSO observations also showed widespread PSCs containing NAT (nitric acid trihydrate) particles in December 2009, prior to the occurrence of synoptic-scale regions of ice PSCs during mid-January 2010.

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