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Water mass transformation in the Iceland Sea : Contrasting two winters separated by four decades

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dc.contributor.author Vage, Kjetil
dc.contributor.author Semper, Stefanie
dc.contributor.author Valdimarsson, Héðinn
dc.contributor.author Jónsson, Steingrímur
dc.contributor.author Pickart, Robert S.
dc.contributor.author Moore, G. W. K.
dc.date.accessioned 2022-08-31T01:03:46Z
dc.date.available 2022-08-31T01:03:46Z
dc.date.issued 2022-08
dc.identifier.citation Vage , K , Semper , S , Valdimarsson , H , Jónsson , S , Pickart , R S & Moore , G W K 2022 , ' Water mass transformation in the Iceland Sea : Contrasting two winters separated by four decades ' , Deep-Sea Research Part I: Oceanographic Research Papers , vol. 186 , 103824 . https://doi.org/10.1016/j.dsr.2022.103824
dc.identifier.issn 0967-0637
dc.identifier.other PURE: 57842743
dc.identifier.other PURE UUID: f664c731-60d5-43f7-9eda-2daac06f731b
dc.identifier.other WOS: 000817944600001
dc.identifier.other Scopus: 85132786938
dc.identifier.uri https://hdl.handle.net/20.500.11815/3396
dc.description.abstract Dense water masses formed in the Nordic Seas flow across the Greenland–Scotland Ridge and contribute substantially to the lower limb of the Atlantic Meridional Overturning Circulation. Originally considered an important source of dense water, the Iceland Sea gained renewed interest when the North Icelandic Jet — a current transporting dense water from the Iceland Sea into Denmark Strait — was discovered in the early 2000s. Here we use recent hydrographic data to quantify water mass transformation in the Iceland Sea and contrast the present conditions with measurements from hydrographic surveys conducted four decades earlier. We demonstrate that the large-scale hydrographic structure of the central Iceland Sea has changed significantly over this period and that the locally transformed water has become less dense, in concert with a retreating sea-ice edge and diminished ocean-to-atmosphere heat fluxes. This has reduced the available supply of dense water to the North Icelandic Jet, but also permitted densification of the East Greenland Current during its transit through the presently ice-free western Iceland Sea in winter. Together, these changes have significantly altered the contribution from the Iceland Sea to the overturning in the Nordic Seas over the four decade period.
dc.language.iso en
dc.relation.ispartofseries Deep-Sea Research Part I: Oceanographic Research Papers; 186()
dc.rights info:eu-repo/semantics/openAccess
dc.subject Hafsvæði
dc.subject Iceland Sea
dc.subject Water mass transformation
dc.subject North Icelandic Jet
dc.subject Iceland-Faroe Slope Jet
dc.subject East Greenland Current
dc.subject Denmark Strait overflow water
dc.title Water mass transformation in the Iceland Sea : Contrasting two winters separated by four decades
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1016/j.dsr.2022.103824
dc.contributor.school School of Business and Science

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