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dc.contributor.authorÅrthun, Mariuseng
dc.contributor.authorEldevik, Toreng
dc.contributor.authorSmedsrud, Lars Henrikeng
dc.contributor.authorSkagseth, Øysteineng
dc.date.accessioned2011-10-20T11:33:39Z
dc.date.available2011-10-20T11:33:39Z
dc.date.issued2011eng
dc.identifier.urihttps://hdl.handle.net/1956/5126
dc.description.abstractThe recent Arctic winter sea-ice retreat is most pronounced in the Barents Sea. Using available observations of the Atlantic inflow to the Barents Sea and results from a regional ice-ocean model we assess the role of inflowing heat anomalies on sea-ice variability. Between 1979 and 2008 the reduction of annual sea-ice area was 15% decade−1, and in the eastern Barents Sea the winter ice edge retreated about 240 km. The interannual variability and decrease in sea-ice area reflects observed variability in the Atlantic inflow. The heat budget of the model is used to elucidate further how Atlantic inflow anomalies influence the sea-ice area. It is argued that ocean heat transport into the western Barents Sea sets the boundary of the ice-free Atlantic domain and, hence, the sea-ice extent. The regional heat content and heat loss to the atmosphere scales with the area of open ocean as a consequence. Recent sea-ice loss is thus largely caused by an increasing ”Atlantification” of the Barents Sea. A simple prognostic model based on this scaling – and the Atlantic heat source – explains 58% of the variance in sea-ice area.en_US
dc.language.isoengeng
dc.publisherThe authorsen_US
dc.relation.ispartof<a href="http://hdl.handle.net/1956/5127" target="blank">Water mass transformations and air-sea exchange in the Barents Sea</a>en_US
dc.subjectBarents Seaeng
dc.subjectSea iceeng
dc.subjectAtlantic watereng
dc.subjectHeat transporteng
dc.titleBarents Sea ice cover reflects Atlantic inflowen_US
dc.typeJournal article
dc.description.versionsubmittedVersionen_US
dc.description.versionPreprinten_US
dc.rights.holderCopyright the authors. All rights reserveden_US
dc.subject.nsiVDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452en_US


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