Antarctic sea ice trends and its response to the Southern annular mode

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dc.contributor.authorCollins, Charineen_ZA
dc.date.accessioned2015-01-10T06:58:07Z
dc.date.available2015-01-10T06:58:07Z
dc.date.issued2009en_ZA
dc.descriptionIncludes bibliographical references (leaves 37-42).en_ZA
dc.description.abstractSea 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.en_ZA
dc.identifier.apacitationCollins, C. (2009). <i>Antarctic sea ice trends and its response to the Southern annular mode</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Oceanography. Retrieved from http://hdl.handle.net/11427/11918en_ZA
dc.identifier.chicagocitationCollins, Charine. <i>"Antarctic sea ice trends and its response to the Southern annular mode."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Oceanography, 2009. http://hdl.handle.net/11427/11918en_ZA
dc.identifier.citationCollins, C. 2009. Antarctic sea ice trends and its response to the Southern annular mode. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Collins, Charine AB - 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. DA - 2009 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 T1 - Antarctic sea ice trends and its response to the Southern annular mode TI - Antarctic sea ice trends and its response to the Southern annular mode UR - http://hdl.handle.net/11427/11918 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/11918
dc.identifier.vancouvercitationCollins C. Antarctic sea ice trends and its response to the Southern annular mode. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Oceanography, 2009 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/11918en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Oceanographyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherZoologyen_ZA
dc.titleAntarctic sea ice trends and its response to the Southern annular modeen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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