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dc.contributor.authorRenner, Angelika
dc.contributor.authorSundfjord, Arild
dc.contributor.authorJanout, Markus
dc.contributor.authorIngvaldsen, Randi Brunvær
dc.contributor.authorBeszczynska, Agnieszka
dc.contributor.authorPickart, Robert S.
dc.contributor.authorPeréz-Hernández, M. Dolores
dc.date.accessioned2018-10-03T11:37:36Z
dc.date.available2018-10-03T11:37:36Z
dc.date.created2018-09-14T10:40:00Z
dc.date.issued2018
dc.identifier.issn2169-9275
dc.identifier.urihttp://hdl.handle.net/11250/2566146
dc.description.abstractWe quantify Atlantic Water heat loss north of Svalbard using year‐long hydrographic and current records from three moorings deployed across the Svalbard Branch of the Atlantic Water boundary current in 2012–2013. The boundary current loses annually on average 16 W m−2 during the eastward propagation along the upper continental slope. The largest vertical fluxes of >100 W m−2 occur episodically in autumn and early winter. Episodes of sea ice imported from the north in November 2012 and February 2013 coincided with large ocean‐to‐ice heat fluxes, which effectively melted the ice and sustained open water conditions in the middle of the Arctic winter. Between March and early July 2013, a persistent ice cover‐modulated air‐sea fluxes. Melting sea ice at the start of the winter initiates a cold, up to 100‐m‐deep halocline separating the ice cover from the warm Atlantic Water. Semidiurnal tides dominate the energy over the upper part of the slope. The vertical tidal structure depends on stratification and varies seasonally, with the potential to contribute to vertical fluxes with shear‐driven mixing. Further processes impacting the heat budget include lateral heat loss due to mesoscale eddies, and modest and negligible contributions of Ekman pumping and shelf break upwelling, respectively. The continental slope north of Svalbard is a key example regarding the role of ocean heat for the sea ice cover. Our study underlines the complexity of the ocean's heat budget that is sensitive to the balance between oceanic heat advection, vertical fluxes, air‐sea interaction, and the sea ice cover.nb_NO
dc.language.isoengnb_NO
dc.titleVariability and redistribution of heat in the Atlantic Water boundary current north of Svalbardnb_NO
dc.title.alternativeVariability and redistribution of heat in the Atlantic Water boundary current north of Svalbardnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.journalJournal of Geophysical Research - Oceansnb_NO
dc.identifier.doi10.1029/2018JC013814
dc.identifier.cristin1609452
cristin.unitcode7431,20,0,0
cristin.unitnameOseanografi og klima
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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