The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective
The Nordic Seas are a key region for global ocean circulation, crucial in water mass exchange between the North Atlantic and the Arctic oceans, and deepwater formation. The advection of Atlantic Water (AW) to the Nordic Seas is decisive for the oceanography and climate of the region and beyond. Here...
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Online Access: | http://dx.doi.org/10.1177/09596836221106974 http://journals.sagepub.com/doi/pdf/10.1177/09596836221106974 http://journals.sagepub.com/doi/full-xml/10.1177/09596836221106974 |
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crsagepubl:10.1177/09596836221106974 2024-04-07T07:50:12+00:00 The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective Telesiński, Maciej M. Łącka, Magdalena Kujawa, Agnieszka Zajączkowski, Marek 2022 http://dx.doi.org/10.1177/09596836221106974 http://journals.sagepub.com/doi/pdf/10.1177/09596836221106974 http://journals.sagepub.com/doi/full-xml/10.1177/09596836221106974 en eng SAGE Publications https://creativecommons.org/licenses/by/4.0/ The Holocene volume 32, issue 10, page 1104-1116 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2022 crsagepubl https://doi.org/10.1177/09596836221106974 2024-03-08T03:21:17Z The Nordic Seas are a key region for global ocean circulation, crucial in water mass exchange between the North Atlantic and the Arctic oceans, and deepwater formation. The advection of Atlantic Water (AW) to the Nordic Seas is decisive for the oceanography and climate of the region and beyond. Here, we present a set of sedimentary records, including two new cores from the western Nordic Seas to reconstruct the history of AW routing in the Nordic Seas over the Holocene. Our results show that the early Holocene (11.7–8 ka BP) thermal maximum, caused by an ‘overshoot’ of overturning circulation and high insolation, was limited to the eastern Nordic Seas, while the western part remained cold due to the meltwater blocking the spreading of AW. After 8 ka BP, the retreat of the freshwater lid allowed AW to reach the central Greenland Sea, where deep convection developed. After 5 ka BP, the increase in sea-ice export from the Arctic strengthened deep convection, which intensified the westward AW flow. A disruption of convectional activity around 2.7 ka BP, triggered by a minimum in solar activity, caused cooling and expansion of sea ice in the Nordic Seas and might have contributed to a global climatic deterioration. The overturning circulation in the Nordic Seas did not recover to its previous state until the present. We demonstrate that the rate of AW advection into the Nordic Seas alone is not enough to understand the oceanographic evolution of this area and its influence on regional or even global ocean and climate changes. The shifts in AW routing within the Nordic Seas and the rate of deep convection are also important. Article in Journal/Newspaper Arctic Greenland Greenland Sea Nordic Seas North Atlantic Sea ice SAGE Publications Arctic Greenland The Holocene 32 10 1104 1116 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Telesiński, Maciej M. Łącka, Magdalena Kujawa, Agnieszka Zajączkowski, Marek The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
The Nordic Seas are a key region for global ocean circulation, crucial in water mass exchange between the North Atlantic and the Arctic oceans, and deepwater formation. The advection of Atlantic Water (AW) to the Nordic Seas is decisive for the oceanography and climate of the region and beyond. Here, we present a set of sedimentary records, including two new cores from the western Nordic Seas to reconstruct the history of AW routing in the Nordic Seas over the Holocene. Our results show that the early Holocene (11.7–8 ka BP) thermal maximum, caused by an ‘overshoot’ of overturning circulation and high insolation, was limited to the eastern Nordic Seas, while the western part remained cold due to the meltwater blocking the spreading of AW. After 8 ka BP, the retreat of the freshwater lid allowed AW to reach the central Greenland Sea, where deep convection developed. After 5 ka BP, the increase in sea-ice export from the Arctic strengthened deep convection, which intensified the westward AW flow. A disruption of convectional activity around 2.7 ka BP, triggered by a minimum in solar activity, caused cooling and expansion of sea ice in the Nordic Seas and might have contributed to a global climatic deterioration. The overturning circulation in the Nordic Seas did not recover to its previous state until the present. We demonstrate that the rate of AW advection into the Nordic Seas alone is not enough to understand the oceanographic evolution of this area and its influence on regional or even global ocean and climate changes. The shifts in AW routing within the Nordic Seas and the rate of deep convection are also important. |
format |
Article in Journal/Newspaper |
author |
Telesiński, Maciej M. Łącka, Magdalena Kujawa, Agnieszka Zajączkowski, Marek |
author_facet |
Telesiński, Maciej M. Łącka, Magdalena Kujawa, Agnieszka Zajączkowski, Marek |
author_sort |
Telesiński, Maciej M. |
title |
The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective |
title_short |
The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective |
title_full |
The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective |
title_fullStr |
The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective |
title_full_unstemmed |
The significance of Atlantic Water routing in the Nordic Seas: The Holocene perspective |
title_sort |
significance of atlantic water routing in the nordic seas: the holocene perspective |
publisher |
SAGE Publications |
publishDate |
2022 |
url |
http://dx.doi.org/10.1177/09596836221106974 http://journals.sagepub.com/doi/pdf/10.1177/09596836221106974 http://journals.sagepub.com/doi/full-xml/10.1177/09596836221106974 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Greenland Sea Nordic Seas North Atlantic Sea ice |
genre_facet |
Arctic Greenland Greenland Sea Nordic Seas North Atlantic Sea ice |
op_source |
The Holocene volume 32, issue 10, page 1104-1116 ISSN 0959-6836 1477-0911 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1177/09596836221106974 |
container_title |
The Holocene |
container_volume |
32 |
container_issue |
10 |
container_start_page |
1104 |
op_container_end_page |
1116 |
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1795664880105160704 |