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Deep ocean storage of heat and CO2 in the Fram Strait, Arctic Ocean during the last glacial period
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dc.contributor.author | Ezat, Mohamed M. | |
dc.contributor.author | Rasmussen, Tine L. | |
dc.contributor.author | Hain, Mathis P. | |
dc.contributor.author | Greaves, Mervyn | |
dc.contributor.author | Rae, James W. B. | |
dc.contributor.author | Zamelczyk, Katarzyna | |
dc.contributor.author | Marchitto, Thomas M. | |
dc.contributor.author | Szidat, Sönke | |
dc.contributor.author | Skinner, Luke C. | |
dc.date.accessioned | 2021-07-30T11:30:07Z | |
dc.date.available | 2021-07-30T11:30:07Z | |
dc.date.issued | 2021-07-28 | |
dc.identifier.citation | Ezat , 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 . https://doi.org/10.1029/2021PA004216 | en |
dc.identifier.issn | 0883-8305 | |
dc.identifier.other | PURE: 275131009 | |
dc.identifier.other | PURE UUID: 4bc85d5b-66aa-422a-9ac6-5ed3411e4f41 | |
dc.identifier.other | RIS: urn:C8052B614B9F877C38D5FCE4AD2DE7FA | |
dc.identifier.other | ORCID: /0000-0003-3904-2526/work/97885274 | |
dc.identifier.other | Scopus: 85113369874 | |
dc.identifier.other | WOS: 000690772300009 | |
dc.identifier.uri | https://hdl.handle.net/10023/23685 | |
dc.description | MME 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.abstract | The 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.format.extent | 13 | |
dc.language.iso | eng | |
dc.relation.ispartof | Paleoceanography and Paleoclimatology | en |
dc.rights | Copyright © 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.subject | The Nordic Seas | en |
dc.subject | The Fram Strait | en |
dc.subject | The last glacial | en |
dc.subject | Climate change | en |
dc.subject | Benthic foraminiferal δ18O | en |
dc.subject | Benthic foraminiferal element/Ca | en |
dc.subject | GC Oceanography | en |
dc.subject | DAS | en |
dc.subject | SDG 13 - Climate Action | en |
dc.subject | SDG 14 - Life Below Water | en |
dc.subject.lcc | GC | en |
dc.title | Deep ocean storage of heat and CO2 in the Fram Strait, Arctic Ocean during the last glacial period | en |
dc.type | Journal article | en |
dc.contributor.sponsor | NERC | en |
dc.description.version | Publisher PDF | en |
dc.contributor.institution | University of St Andrews. School of Earth & Environmental Sciences | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.contributor.institution | University of St Andrews. St Andrews Isotope Geochemistry | en |
dc.identifier.doi | https://doi.org/10.1029/2021PA004216 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | NE/M004619/1 | en |
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