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dc.contributor.advisorMaslowski, Wieslaw
dc.contributor.authorWilliams, Catherine E.
dc.date.accessioned2012-03-14T17:31:18Z
dc.date.available2012-03-14T17:31:18Z
dc.date.issued2004-09
dc.identifier.urihttp://hdl.handle.net/10945/1333
dc.descriptionApproved for public release; distribution in unlimited.en_US
dc.description.abstractThe recent decreasing trend of sea ice cover in the Arctic region and its projected future reduction has direct implications for the global thermohaline circulation and the U.S. Navy. This thesis provides a qualitative and quantitative analysis of the freshwater export from the Arctic Ocean through the Canadian Arctic Archipelago (CAA) and the Fram Strait into the deep-water formation region of the Labrador Sea, using model data from 1979 to 2002. The results of this thesis directly aid the Navy in preparing personnel, ships, and weapons systems to operate efficiently in a possible ice-free Arctic. A coupled ice-ocean model of the pan-Arctic region at a 1/12-degree and 45-level grid resolution was used to produce data over a 24-year time period. The 24-year averaged annual velocity, temperature, and salinity profiles were compared for each of the analyzed stations. Additionally, 24-year mean monthly volume and freshwater flux time series plots and annual cycle plots were also produced to analyze the region's interannual variability from 1979 to 2002. The results show that the Canadian Arctic Archipelago is the major contributor of freshwater to the Labrador Sea. The CAA is a direct pathway for increased freshwater export from the Arctic into the sub-arctic seas where North Atlantic Deep Water(NADW)forms. The increased freshwater flux through the CAA, found in this study, supports the earlier reports on the freshening of NADW and a possibility of reduction in the meridional overturning rate in the North Atlantic. An increase in freshwater export from the Arctic is a good indicator of increasing sea ice reduction. The predicted opening of the Arctic to commercial and military vessels poses a direct threat to U.S. economical and strategic interests in the Arctic region. This thesis supports the U.S. Navy's ability to operate in a possibly ice-free Arctic.en_US
dc.description.urihttp://archive.org/details/thecirculationnd109451333
dc.format.extentxvi, 93 p. : ill. (some col.), col. mapsen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleThe circulation and fluxes from the Arctic into the North Atlantic Ocean 1979-2002 model resultsen_US
dc.typeThesisen_US
dc.contributor.secondreaderSemtner, Albert
dc.contributor.corporateNaval Postgraduate School (U.S.).
dc.contributor.departmentOceanography
dc.subject.authorCanadian Arctic Archipelago (CAA)en_US
dc.subject.authorArctic Ocean Ocean modelingen_US
dc.description.serviceEnsign, United States Navyen_US
etd.thesisdegree.nameM.S. in Applied Science (Physical Oceanography)en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineApplied Scienceen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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