Observations of cloud and precipitation particles on the Avery Plateau, Antarctic Peninsula

Lachlan-Cope, Tom ORCID: https://orcid.org/0000-0002-0657-3235; Ladkin, Russell; Turner, John ORCID: https://orcid.org/0000-0002-6111-5122; Davison, Paul. 2001 Observations of cloud and precipitation particles on the Avery Plateau, Antarctic Peninsula. Antarctic Science, 13 (3). 339-348. 10.1017/S0954102001000475

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Abstract/Summary

Surface-based observations were taken of cloud and precipitation particles on the Avery Plateau (66°50.34′S 65°29.58′W), Antarctic Peninsula from 25 November to 13 December 1995. This paper considers cloud parameters on three days during this period when the cloud base reached ground level and snow was falling. It was found that on all three days more ice crystals were present in the cloud than would be expected from simple theoretical considerations. The rate of snowfall decreased as the number of ice crystals increased, the large number of ice crystals present effectively suppressing the formation of large precipitation-sized crystals. The source of the ice nuclei that allowed the formation of the large number of crystals is not known for certain but is thought to be the snow surface, possibly in the form of very fine ice crystals blown from the surface during blowing/drifting snow episodes.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1017/S0954102001000475
Programmes:	BAS Programmes > Antarctic Science in the Global Context (2000-2005) > Antarctic Climate Processes
ISSN:	0954-1020
Additional Keywords:	clouds, microphysics, precipitation
Date made live:	01 Oct 2012 10:45 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/19787

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