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Detection of polar stratospheric clouds over Antarctica using AVHRR images obtained at Palmer Station during August 1992

Published online by Cambridge University Press:  27 October 2009

Kathy L. Pagan
Affiliation:
Department of Geosciences, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA 94132, USA
Patricia G. Foschi
Affiliation:
Department of Geography and Human Environmental Studies, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA 94132, USA
Steven E. Gaines
Affiliation:
Sterling Software, 1121 San Antonio Road, Palo Alto, CA 94303, USA
R. Stephen Hipskind
Affiliation:
Ames Research Center, National Aeronautics and Space Administration, Moffett Field, CA 94035, USA

Abstract

Four case studies are presented that focus on a joint analysis of AVHRR images with other independently obtained data sets to identify examples of both optically thick and thin polar stratospheric clouds (PSCs) over Antarctica. Optically thick PSCs are shown to be readily identifiable by the temperature signatures in AVHRR channel 5 images over the Antarctic Peninsula–Weddell Sea area. A time series of optically thick PSCs as seen in satellite images obtained at Palmer Station, Antarctica, is produced and discussed. Four events are identified and discussed where the areal coverage by cold temperatures indicative of PSCs expands to cover a significant portion of the area sampled. Plans for further research are outlined.

Type
Articles
Copyright
Copyright © Cambridge University Press 1995

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