Interannual variability and future changes of the Southern Ocean sea ice cover
The interannual variability of the sea ice in the Southern Ocean and its evolution projected for the end of the 21st century are investigated using observations and different types of models. First of all, none of the known atmospheric modes of variability are able to explain much of the total sea i...
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:5389 2024-05-12T07:52:50+00:00 Interannual variability and future changes of the Southern Ocean sea ice cover Lefebvre, Wouter UCL - SC/PHYS - Département de physique Connolley, William Genthon, Christophe Thierry, Fichefet Legat, Vincent Defrance, Pierre Goosse, Hugues 2007 http://hdl.handle.net/2078.1/5389 eng eng boreal:5389 http://hdl.handle.net/2078.1/5389 info:eu-repo/semantics/openAccess Sea ice Southern Ocean info:eu-repo/semantics/doctoralThesis 2007 ftunistlouisbrus 2024-04-18T18:24:00Z The interannual variability of the sea ice in the Southern Ocean and its evolution projected for the end of the 21st century are investigated using observations and different types of models. First of all, none of the known atmospheric modes of variability are able to explain much of the total sea ice extent variability in the Southern Ocean. However, they have large influences on the local and regional scales. In particular, the response of the sea ice to the Southern Annular Mode is characterized by a dipole between the Ross Sea and the region around the Antarctic Peninsula caused by a low pressure anomaly in the Amundsen Sea in high SAM-index years. Secondly, the sea ice extent in the different regions seems to be mostly uncorrelated, showing that the total sea ice cover cannot be seen as a single entity, but merely as a combination of regional covers. Finally, it is shown why the projected distribution of sea ice is not a simple extrapolation of the current sea ice trends. The mechanisms responsible for the regional variability of the future sea-ice extents are discussed. (PHYS 3)--UCL, 2007 Doctoral or Postdoctoral Thesis Amundsen Sea Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Southern Ocean DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic Southern Ocean The Antarctic Antarctic Peninsula Ross Sea Amundsen Sea |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Sea ice Southern Ocean |
spellingShingle |
Sea ice Southern Ocean Lefebvre, Wouter Interannual variability and future changes of the Southern Ocean sea ice cover |
topic_facet |
Sea ice Southern Ocean |
description |
The interannual variability of the sea ice in the Southern Ocean and its evolution projected for the end of the 21st century are investigated using observations and different types of models. First of all, none of the known atmospheric modes of variability are able to explain much of the total sea ice extent variability in the Southern Ocean. However, they have large influences on the local and regional scales. In particular, the response of the sea ice to the Southern Annular Mode is characterized by a dipole between the Ross Sea and the region around the Antarctic Peninsula caused by a low pressure anomaly in the Amundsen Sea in high SAM-index years. Secondly, the sea ice extent in the different regions seems to be mostly uncorrelated, showing that the total sea ice cover cannot be seen as a single entity, but merely as a combination of regional covers. Finally, it is shown why the projected distribution of sea ice is not a simple extrapolation of the current sea ice trends. The mechanisms responsible for the regional variability of the future sea-ice extents are discussed. (PHYS 3)--UCL, 2007 |
author2 |
UCL - SC/PHYS - Département de physique Connolley, William Genthon, Christophe Thierry, Fichefet Legat, Vincent Defrance, Pierre Goosse, Hugues |
format |
Doctoral or Postdoctoral Thesis |
author |
Lefebvre, Wouter |
author_facet |
Lefebvre, Wouter |
author_sort |
Lefebvre, Wouter |
title |
Interannual variability and future changes of the Southern Ocean sea ice cover |
title_short |
Interannual variability and future changes of the Southern Ocean sea ice cover |
title_full |
Interannual variability and future changes of the Southern Ocean sea ice cover |
title_fullStr |
Interannual variability and future changes of the Southern Ocean sea ice cover |
title_full_unstemmed |
Interannual variability and future changes of the Southern Ocean sea ice cover |
title_sort |
interannual variability and future changes of the southern ocean sea ice cover |
publishDate |
2007 |
url |
http://hdl.handle.net/2078.1/5389 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Ross Sea Amundsen Sea |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Ross Sea Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Southern Ocean |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Southern Ocean |
op_relation |
boreal:5389 http://hdl.handle.net/2078.1/5389 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1798838129023516672 |