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dc.contributor.authorEzat, Mohamed M.
dc.contributor.authorRasmussen, Tine L.
dc.contributor.authorHain, Mathis P.
dc.contributor.authorGreaves, Mervyn
dc.contributor.authorRae, James W. B.
dc.contributor.authorZamelczyk, Katarzyna
dc.contributor.authorMarchitto, Thomas M.
dc.contributor.authorSzidat, Sönke
dc.contributor.authorSkinner, Luke C.
dc.identifier.citationEzat , M M , Rasmussen , T L , Hain , M P , Greaves , M , Rae , J W B , Zamelczyk , K , Marchitto , T M , Szidat , S & Skinner , L C 2021 , ' Deep ocean storage of heat and CO 2 in the Fram Strait, Arctic Ocean during the last glacial period ' , Paleoceanography and Paleoclimatology , vol. 36 , no. 8 , e2021PA004216 .
dc.identifier.otherPURE: 275131009
dc.identifier.otherPURE UUID: 4bc85d5b-66aa-422a-9ac6-5ed3411e4f41
dc.identifier.otherRIS: urn:C8052B614B9F877C38D5FCE4AD2DE7FA
dc.identifier.otherORCID: /0000-0003-3904-2526/work/97885274
dc.identifier.otherScopus: 85113369874
dc.identifier.otherWOS: 000690772300009
dc.descriptionMME is funded by the Research Council of Norway and the Co-funding of Regional, National, and International Programmes (COFUND) Marie Sklodowska-Curie Actions under the EU Seventh Framework Programme (FP7), project number 274429, and the Research Council of Norway through its Centres of Excellence funding scheme, grant number 223259.en
dc.description.abstractThe Fram Strait is the only deep gateway between the Arctic Ocean and the Nordic Seas and thus is a key area to study past changes in ocean circulation and the marine carbon cycle. Here, we study deep ocean temperature, δ18O, carbonate chemistry (i.e., carbonate ion concentration, [CO32-]), and nutrient content in the Fram Strait during the late glacial (35,000-19,000 years BP) and the Holocene based on benthic foraminiferal geochemistry and carbon cycle modelling. Our results indicate a thickening of Atlantic water penetrating into the northern Nordic Seas, forming a subsurface Atlantic intermediate water layer reaching to at least ~2600 m water depth during most of the late glacial period. The recirculating Atlantic layer was characterized by relatively high [CO32-] and low δ13C during the late glacial, and provides evidence for a Nordic Seas source to the glacial North Atlantic intermediate water flowing at 2000-3000 m water depth, most likely via the Denmark Strait. In addition, we discuss evidence for enhanced terrestrial carbon input to the Nordic Seas at ~23.5 ka. Comparing our δ13C and qualitative [CO32-] records with results of carbon cycle box modelling suggests that the total terrestrial CO2 release during this carbon input event was low, slow, or directly to the atmosphere.
dc.relation.ispartofPaleoceanography and Paleoclimatologyen
dc.rightsCopyright © 2021. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.en
dc.subjectThe Nordic Seasen
dc.subjectThe Fram Straiten
dc.subjectThe last glacialen
dc.subjectClimate changeen
dc.subjectBenthic foraminiferal δ18Oen
dc.subjectBenthic foraminiferal element/Caen
dc.subjectGC Oceanographyen
dc.titleDeep ocean storage of heat and CO2 in the Fram Strait, Arctic Ocean during the last glacial perioden
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews.Centre for Energy Ethicsen
dc.contributor.institutionUniversity of St Andrews.St Andrews Isotope Geochemistryen
dc.description.statusPeer revieweden

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