Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay
Baffin Bay hosts the largest and most productive of the Arctic polynyas: the North Water (NOW). Despite its significance and active role in water mass formation, the history of the NOW beyond the observational era remains poorly known. We reconcile the previously unassessed relationship between long...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/330945 2024-01-07T09:41:27+01:00 Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay Jackson, Rebecca Kvorning, Anna Bang Limoges, Audrey Georgiadis, Eleanor Olsen, Steffen M. Tallberg, Petra Andersen, Thorbjorn J. Mikkelsen, Naja Giraudeau, Jacques Masse, Guillaume Wacker, Lukas Ribeiro, Sofia Ecosystems and Environment Research Programme Biosciences Marine Ecosystems Research Group 2021-06-14T13:45:01Z 17 application/pdf http://hdl.handle.net/10138/330945 eng eng Nature Publishing Group 10.1038/s41598-021-88517-9 We would like to thank the Network of Centres of Excellence, ArcticNet, Fondation Total, the French Agence Nationale de la Recherche ("GreenEdge" project) and crew of CCGS Amundsen on expeditions AMD15 and AMD16 for the collection and provision of the sediment cores. We thank Caroline Guilmette for carrying out the lipid biomarker analysis. This study was funded by the VILLUM Foundation, Denmark (grant VKR023454 to SR) and the ICE-ARC project from the European Union 7th Framework Programme, grant 603887. RJ is funded by the European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie grant agreement No. 846142. AL received financial support from NSERC-discovery grant (RGPIN-2018-03984). SMO has received funding from the National Centre for Climate Research (NCKF 2021) and from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 727852. Jackson , R , Kvorning , A B , Limoges , A , Georgiadis , E , Olsen , S M , Tallberg , P , Andersen , T J , Mikkelsen , N , Giraudeau , J , Masse , G , Wacker , L & Ribeiro , S 2021 , ' Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay ' , Scientific Reports , vol. 11 , 10095 . https://doi.org/10.1038/s41598-021-88517-9 d85bd87e-1c2b-4019-89e8-0c7709bf5208 http://hdl.handle.net/10138/330945 000652602700004 cc_by openAccess info:eu-repo/semantics/openAccess NORTH WATER POLYNYA PALAEO SEA-ICE BENTHIC FORAMINIFERA NARES STRAIT BENTHONIC FORAMINIFERA DEEP-SEA GREENLAND SHELF ASSEMBLAGES STORFJORDEN 1171 Geosciences 1172 Environmental sciences Article publishedVersion 2021 ftunivhelsihelda 2023-12-14T00:08:32Z Baffin Bay hosts the largest and most productive of the Arctic polynyas: the North Water (NOW). Despite its significance and active role in water mass formation, the history of the NOW beyond the observational era remains poorly known. We reconcile the previously unassessed relationship between long-term NOW dynamics and ocean conditions by applying a multiproxy approach to two marine sediment cores from the region that, together, span the Holocene. Declining influence of Atlantic Water in the NOW is coeval with regional records that indicate the inception of a strong and recurrent polynya from similar to 4400 yrs BP, in line with Neoglacial cooling. During warmer Holocene intervals such as the Roman Warm Period, a weaker NOW is evident, and its reduced capacity to influence bottom ocean conditions facilitated northward penetration of Atlantic Water. Future warming in the Arctic may have negative consequences for this vital biological oasis, with the potential knock-on effect of warm water penetration further north and intensified melt of the marine-terminating glaciers that flank the coast of northwest Greenland. Peer reviewed Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Foraminifera* Greenland Nares strait Sea ice HELDA – University of Helsinki Open Repository Arctic Baffin Bay Greenland Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Scientific Reports 11 1 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
NORTH WATER POLYNYA PALAEO SEA-ICE BENTHIC FORAMINIFERA NARES STRAIT BENTHONIC FORAMINIFERA DEEP-SEA GREENLAND SHELF ASSEMBLAGES STORFJORDEN 1171 Geosciences 1172 Environmental sciences |
spellingShingle |
NORTH WATER POLYNYA PALAEO SEA-ICE BENTHIC FORAMINIFERA NARES STRAIT BENTHONIC FORAMINIFERA DEEP-SEA GREENLAND SHELF ASSEMBLAGES STORFJORDEN 1171 Geosciences 1172 Environmental sciences Jackson, Rebecca Kvorning, Anna Bang Limoges, Audrey Georgiadis, Eleanor Olsen, Steffen M. Tallberg, Petra Andersen, Thorbjorn J. Mikkelsen, Naja Giraudeau, Jacques Masse, Guillaume Wacker, Lukas Ribeiro, Sofia Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay |
topic_facet |
NORTH WATER POLYNYA PALAEO SEA-ICE BENTHIC FORAMINIFERA NARES STRAIT BENTHONIC FORAMINIFERA DEEP-SEA GREENLAND SHELF ASSEMBLAGES STORFJORDEN 1171 Geosciences 1172 Environmental sciences |
description |
Baffin Bay hosts the largest and most productive of the Arctic polynyas: the North Water (NOW). Despite its significance and active role in water mass formation, the history of the NOW beyond the observational era remains poorly known. We reconcile the previously unassessed relationship between long-term NOW dynamics and ocean conditions by applying a multiproxy approach to two marine sediment cores from the region that, together, span the Holocene. Declining influence of Atlantic Water in the NOW is coeval with regional records that indicate the inception of a strong and recurrent polynya from similar to 4400 yrs BP, in line with Neoglacial cooling. During warmer Holocene intervals such as the Roman Warm Period, a weaker NOW is evident, and its reduced capacity to influence bottom ocean conditions facilitated northward penetration of Atlantic Water. Future warming in the Arctic may have negative consequences for this vital biological oasis, with the potential knock-on effect of warm water penetration further north and intensified melt of the marine-terminating glaciers that flank the coast of northwest Greenland. Peer reviewed |
author2 |
Ecosystems and Environment Research Programme Biosciences Marine Ecosystems Research Group |
format |
Article in Journal/Newspaper |
author |
Jackson, Rebecca Kvorning, Anna Bang Limoges, Audrey Georgiadis, Eleanor Olsen, Steffen M. Tallberg, Petra Andersen, Thorbjorn J. Mikkelsen, Naja Giraudeau, Jacques Masse, Guillaume Wacker, Lukas Ribeiro, Sofia |
author_facet |
Jackson, Rebecca Kvorning, Anna Bang Limoges, Audrey Georgiadis, Eleanor Olsen, Steffen M. Tallberg, Petra Andersen, Thorbjorn J. Mikkelsen, Naja Giraudeau, Jacques Masse, Guillaume Wacker, Lukas Ribeiro, Sofia |
author_sort |
Jackson, Rebecca |
title |
Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay |
title_short |
Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay |
title_full |
Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay |
title_fullStr |
Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay |
title_full_unstemmed |
Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay |
title_sort |
holocene polynya dynamics and their interaction with oceanic heat transport in northernmost baffin bay |
publisher |
Nature Publishing Group |
publishDate |
2021 |
url |
http://hdl.handle.net/10138/330945 |
long_lat |
ENVELOPE(158.167,158.167,-81.450,-81.450) |
geographic |
Arctic Baffin Bay Greenland Nares |
geographic_facet |
Arctic Baffin Bay Greenland Nares |
genre |
Arctic Baffin Bay Baffin Bay Baffin Foraminifera* Greenland Nares strait Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Foraminifera* Greenland Nares strait Sea ice |
op_relation |
10.1038/s41598-021-88517-9 We would like to thank the Network of Centres of Excellence, ArcticNet, Fondation Total, the French Agence Nationale de la Recherche ("GreenEdge" project) and crew of CCGS Amundsen on expeditions AMD15 and AMD16 for the collection and provision of the sediment cores. We thank Caroline Guilmette for carrying out the lipid biomarker analysis. This study was funded by the VILLUM Foundation, Denmark (grant VKR023454 to SR) and the ICE-ARC project from the European Union 7th Framework Programme, grant 603887. RJ is funded by the European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie grant agreement No. 846142. AL received financial support from NSERC-discovery grant (RGPIN-2018-03984). SMO has received funding from the National Centre for Climate Research (NCKF 2021) and from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 727852. Jackson , R , Kvorning , A B , Limoges , A , Georgiadis , E , Olsen , S M , Tallberg , P , Andersen , T J , Mikkelsen , N , Giraudeau , J , Masse , G , Wacker , L & Ribeiro , S 2021 , ' Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay ' , Scientific Reports , vol. 11 , 10095 . https://doi.org/10.1038/s41598-021-88517-9 d85bd87e-1c2b-4019-89e8-0c7709bf5208 http://hdl.handle.net/10138/330945 000652602700004 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
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1787422254808694784 |