Historical whaling records reveal major regional retreat of Antarctic sea ice
International audience Several studies have provided evidence of a reduction of the Antarctic sea ice extent. However, these studies were conducted either at a global scale or at a regional scale, and possible inter-regional differences were not analysed. Using the long-term whaling database we inve...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Language: | English |
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Online Access: | https://doi.org/10.1016/j.dsr.2006.11.001 https://hal.archives-ouvertes.fr/hal-00182526 |
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fttriple:oai:gotriple.eu:10670/1.t45vmi 2023-05-15T14:02:11+02:00 Historical whaling records reveal major regional retreat of Antarctic sea ice Cotté, Cédric Guinet, Christophe Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2007-01-01 https://doi.org/10.1016/j.dsr.2006.11.001 https://hal.archives-ouvertes.fr/hal-00182526 en eng HAL CCSD Elsevier hal-00182526 doi:10.1016/j.dsr.2006.11.001 10670/1.t45vmi https://hal.archives-ouvertes.fr/hal-00182526 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2007, 57, pp.243-252. ⟨10.1016/j.dsr.2006.11.001⟩ Antarctic zone Whaling Environmental assessment Long-term changes Sea ice geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2007 fttriple https://doi.org/10.1016/j.dsr.2006.11.001 2023-01-22T17:01:50Z International audience Several studies have provided evidence of a reduction of the Antarctic sea ice extent. However, these studies were conducted either at a global scale or at a regional scale, and possible inter-regional differences were not analysed. Using the long-term whaling database we investigated circum-Antarctic changes in summer sea ice extent from 1931 to 1987. Accounting for bias inherent in the whaling method, this analysis provides new insight into the historical ice edge reconstruction and inter-regional differences. We highlight a reduction of the sea ice extent occurring in the 1960s, mainly in the Weddell sector where the change ranged from 31 to 7.91 latitude through summer. Although the whaling method may not be appropriate for detecting fine-scale change, these results provide evidence for a heterogeneous circumpolar change of the sea ice extent. The shift is temporally and spatially consistent with other environmental changes detected in the Weddell sector and also with a shift in the Southern Hemisphere annular mode. The large reduction of the sea ice extent has probably influenced the ecosystem of the Weddell Sea, particularly the krill biomass. Article in Journal/Newspaper Antarc* Antarctic Sea ice Weddell Sea Unknown Antarctic The Antarctic Weddell Weddell Sea Deep Sea Research Part I: Oceanographic Research Papers 54 2 243 252 |
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Open Polar |
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op_collection_id |
fttriple |
language |
English |
topic |
Antarctic zone Whaling Environmental assessment Long-term changes Sea ice geo envir |
spellingShingle |
Antarctic zone Whaling Environmental assessment Long-term changes Sea ice geo envir Cotté, Cédric Guinet, Christophe Historical whaling records reveal major regional retreat of Antarctic sea ice |
topic_facet |
Antarctic zone Whaling Environmental assessment Long-term changes Sea ice geo envir |
description |
International audience Several studies have provided evidence of a reduction of the Antarctic sea ice extent. However, these studies were conducted either at a global scale or at a regional scale, and possible inter-regional differences were not analysed. Using the long-term whaling database we investigated circum-Antarctic changes in summer sea ice extent from 1931 to 1987. Accounting for bias inherent in the whaling method, this analysis provides new insight into the historical ice edge reconstruction and inter-regional differences. We highlight a reduction of the sea ice extent occurring in the 1960s, mainly in the Weddell sector where the change ranged from 31 to 7.91 latitude through summer. Although the whaling method may not be appropriate for detecting fine-scale change, these results provide evidence for a heterogeneous circumpolar change of the sea ice extent. The shift is temporally and spatially consistent with other environmental changes detected in the Weddell sector and also with a shift in the Southern Hemisphere annular mode. The large reduction of the sea ice extent has probably influenced the ecosystem of the Weddell Sea, particularly the krill biomass. |
author2 |
Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Cotté, Cédric Guinet, Christophe |
author_facet |
Cotté, Cédric Guinet, Christophe |
author_sort |
Cotté, Cédric |
title |
Historical whaling records reveal major regional retreat of Antarctic sea ice |
title_short |
Historical whaling records reveal major regional retreat of Antarctic sea ice |
title_full |
Historical whaling records reveal major regional retreat of Antarctic sea ice |
title_fullStr |
Historical whaling records reveal major regional retreat of Antarctic sea ice |
title_full_unstemmed |
Historical whaling records reveal major regional retreat of Antarctic sea ice |
title_sort |
historical whaling records reveal major regional retreat of antarctic sea ice |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://doi.org/10.1016/j.dsr.2006.11.001 https://hal.archives-ouvertes.fr/hal-00182526 |
geographic |
Antarctic The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Sea ice Weddell Sea |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2007, 57, pp.243-252. ⟨10.1016/j.dsr.2006.11.001⟩ |
op_relation |
hal-00182526 doi:10.1016/j.dsr.2006.11.001 10670/1.t45vmi https://hal.archives-ouvertes.fr/hal-00182526 |
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op_doi |
https://doi.org/10.1016/j.dsr.2006.11.001 |
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Deep Sea Research Part I: Oceanographic Research Papers |
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54 |
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2 |
container_start_page |
243 |
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252 |
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