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Antarctic sea ice trends and its response to the Southern annular mode
Includes bibliographical references (leaves 37-42).
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
Department of Oceanography
2015
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| _version_ | 1867613301347713024 |
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| access_status_str | Open Access |
| author | Collins, Charine |
| author_browse | Collins, Charine |
| author_facet | Collins, Charine |
| author_sort | Collins, Charine |
| collection | Thesis |
| description | Includes bibliographical references (leaves 37-42). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/11918 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:57.504Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Department of Oceanography |
| publisherStr | Department of Oceanography |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/11918 Antarctic sea ice trends and its response to the Southern annular mode Collins, Charine Zoology Includes bibliographical references (leaves 37-42). Sea ice covers vast regions of the Southern Ocean and impacts on the climate as well as the plant and animal life of the region. The variability of sea ice in the Southern Ocean affects the entire food web of the region, from phytoplankton to Antarctic krill through to the apex predators such as seals and penguins. Sea ice variability is determined by shifts in the atmospheric temperature distribution and shifts in the atmospheric circulation. The Southern Annular Mode (SAM) is the primary mode of variability in the atmospheric circulation of the Southern Hemisphere. Despite the overall warming of Antarctica, sea ice extent and sea ice area show a positive trend in the Southern Ocean and all its sectors except in the Bellingshausen/Amundsen Seas sector which displays a negative trend for the period 1979-2007. The SAM index also shows a positive trend during this period indicating a shift towards the more positive phase. The monthly and seasonal correlations between the SAM index and sea ice concentrations display a dipole, with more ice occurring in the Ross Sea during the positive phase of SAM and less ice occurring in the Weddell Sea. 2015-01-10T06:58:07Z 2015-01-10T06:58:07Z 2009 Master Thesis Masters MSc http://hdl.handle.net/11427/11918 eng application/pdf Department of Oceanography Faculty of Science University of Cape Town |
| spellingShingle | Zoology Collins, Charine Antarctic sea ice trends and its response to the Southern annular mode |
| thesis_degree_str | Master's |
| title | Antarctic sea ice trends and its response to the Southern annular mode |
| title_full | Antarctic sea ice trends and its response to the Southern annular mode |
| title_fullStr | Antarctic sea ice trends and its response to the Southern annular mode |
| title_full_unstemmed | Antarctic sea ice trends and its response to the Southern annular mode |
| title_short | Antarctic sea ice trends and its response to the Southern annular mode |
| title_sort | antarctic sea ice trends and its response to the southern annular mode |
| topic | Zoology |
| url | http://hdl.handle.net/11427/11918 |
| work_keys_str_mv | AT collinscharine antarcticseaicetrendsanditsresponsetothesouthernannularmode |