A climatology of sea ice embayments in the Cosmonaut Sea, Antarctica
Identifieur interne : 000808 ( Istex/Corpus ); précédent : 000807; suivant : 000809A climatology of sea ice embayments in the Cosmonaut Sea, Antarctica
Auteurs : Jeffrey A. Geddes ; G. W. K. MooreSource :
- Geophysical Research Letters [ 0094-8276 ] ; 2007-01.
Abstract
The Cosmonaut Sea off the coast of Antarctica is characterized by highly variable sea ice conditions. As the sea ice expands during the austral fall and winter, embayments, open bodies of water surrounded on three sides by sea ice, as well as polynyas often form. Using sea ice concentration data provided by satellite‐based passive microwave instruments from 1979 to 2004, we characterize these embayment events by their size and temporal evolution. The data suggests a striking periodicity in the occurrence of these embayments, with the exception of a “quiet” period between 1984 and 1987. The large embayment events seem to appear approximately every three years in the same location and persist for anywhere between mid‐June to mid‐August. These results indicate there is predictability in the occurrence of embayment events, adding important insight into the characterization of sea ice variability in this region.
Url:
DOI: 10.1029/2006GL027910
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W. K.</namePart><namePart type="family">Moore</namePart><affiliation>Department of Physics, University of Toronto, Toronto, Ontario, Canada</affiliation><affiliation>Also at Department of Chemical and Physical Sciences, University of Toronto at Mississauga, Mississauga, Ontario, Canada.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2007-01</dateIssued><dateCaptured encoding="w3cdtf">2006-08-17</dateCaptured><dateValid encoding="w3cdtf">2006-12-12</dateValid><edition>Geddes, J. A., and G. W. K. Moore (2007), A climatology of sea ice embayments in the Cosmonaut Sea, Antarctica, Geophys. Res. Lett., 34, L02505, doi:10.1029/2006GL027910.</edition><copyrightDate encoding="w3cdtf">2007</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">4</extent></physicalDescription><abstract>The Cosmonaut Sea off the coast of Antarctica is characterized by highly variable sea ice conditions. As the sea ice expands during the austral fall and winter, embayments, open bodies of water surrounded on three sides by sea ice, as well as polynyas often form. Using sea ice concentration data provided by satellite‐based passive microwave instruments from 1979 to 2004, we characterize these embayment events by their size and temporal evolution. The data suggests a striking periodicity in the occurrence of these embayments, with the exception of a “quiet” period between 1984 and 1987. The large embayment events seem to appear approximately every three years in the same location and persist for anywhere between mid‐June to mid‐August. These results indicate there is predictability in the occurrence of embayment events, adding important insight into the characterization of sea ice variability in this region.</abstract><subject><genre>keywords</genre><topic>sea ice variability</topic><topic>polynyas</topic><topic>embayments</topic></subject><relatedItem type="host"><titleInfo><title>Geophysical Research Letters</title></titleInfo><titleInfo type="abbreviated"><title>Geophys. Res. Lett.</title></titleInfo><genre type="journal">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/taxonomy5/0300">ATMOSPHERIC COMPOSITION AND STRUCTURE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0312">Air/sea constituent fluxes</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0700">CRYOSPHERE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0750">Sea ice</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0752">Polynas</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1616">Climate variability</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1635">Oceans</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3300">ATMOSPHERIC PROCESSES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3305">Climate change and variability</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3309">Climatology</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3339">Ocean/atmosphere interactions</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4200">OCEANOGRAPHY: GENERAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4207">Arctic and Antarctic oceanography</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4215">Climate and interannual variability</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4500">OCEANOGRAPHY: PHYSICAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4504">Air/sea interactions</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4540">Ice mechanics and air/sea/ice exchange processes</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4540">Ice mechanics and air/sea/ice exchange processes</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4513">Decadal ocean variability</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9300">GEOGRAPHIC LOCATION</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9310">Antarctica</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9315">Arctic region</topic></subject><subject><genre>article-category</genre><topic>The Cryosphere</topic></subject><identifier type="ISSN">0094-8276</identifier><identifier type="eISSN">1944-8007</identifier><identifier type="DOI">10.1002/(ISSN)1944-8007</identifier><identifier type="CODEN">GPRLAJ</identifier><identifier type="PublisherID">GRL</identifier><part><date>2007</date><detail type="volume"><caption>vol.</caption><number>34</number></detail><detail type="issue"><caption>no.</caption><number>2</number></detail><extent unit="pages"><start>n/a</start><end>n/a</end><total>5</total></extent></part></relatedItem><identifier type="istex">E3636E26AD743072E0C756A35961B67F14366D8E</identifier><identifier type="DOI">10.1029/2006GL027910</identifier><identifier type="ArticleID">2006GL027910</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 2007 by the American Geophysical Union.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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