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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ftpubmed:oai:pubmedcentral.nih.gov:8114930 2023-05-15T14:56:15+02:00 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, Thorbjørn J. Mikkelsen, Naja Giraudeau, Jacques Massé, Guillaume Wacker, Lukas Ribeiro, Sofia 2021-05-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114930/ https://doi.org/10.1038/s41598-021-88517-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114930/ http://dx.doi.org/10.1038/s41598-021-88517-9 © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2021 ftpubmed https://doi.org/10.1038/s41598-021-88517-9 2021-05-16T00:50:09Z 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 ~ 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. Text Arctic Baffin Bay Baffin Bay Baffin Greenland PubMed Central (PMC) Arctic Baffin Bay Greenland Scientific Reports 11 1 |
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Article Jackson, Rebecca Kvorning, Anna Bang Limoges, Audrey Georgiadis, Eleanor Olsen, Steffen M. Tallberg, Petra Andersen, Thorbjørn J. Mikkelsen, Naja Giraudeau, Jacques Massé, Guillaume Wacker, Lukas Ribeiro, Sofia Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay |
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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 ~ 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. |
format |
Text |
author |
Jackson, Rebecca Kvorning, Anna Bang Limoges, Audrey Georgiadis, Eleanor Olsen, Steffen M. Tallberg, Petra Andersen, Thorbjørn J. Mikkelsen, Naja Giraudeau, Jacques Massé, Guillaume Wacker, Lukas Ribeiro, Sofia |
author_facet |
Jackson, Rebecca Kvorning, Anna Bang Limoges, Audrey Georgiadis, Eleanor Olsen, Steffen M. Tallberg, Petra Andersen, Thorbjørn J. Mikkelsen, Naja Giraudeau, Jacques Massé, 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 UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114930/ https://doi.org/10.1038/s41598-021-88517-9 |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
Arctic Baffin Bay Baffin Bay Baffin Greenland |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Greenland |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114930/ http://dx.doi.org/10.1038/s41598-021-88517-9 |
op_rights |
© The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-021-88517-9 |
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Scientific Reports |
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11 |
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1 |
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