Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes
The globally warm climate of the early Pliocene gradually cooled from 4 million years ago, synchronous with decreasing atmospheric CO2 concentrations. In contrast, palaeoceanographic records indicate that the Nordic Seas cooled during the earliest Pliocene, before global cooling. However, a lack of...
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Online Access: | https://hdl.handle.net/1956/11723 https://doi.org/10.1038/ncomms9659 |
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ftunivbergen:oai:bora.uib.no:1956/11723 2023-05-15T15:04:22+02:00 Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes De Schepper, Stijn Schreck, Michael Beck, Kristina Marie Matthiessen, Jens Fahl, Kirsten Mangerud, Gunn 2015-12-30T17:11:50Z application/pdf https://hdl.handle.net/1956/11723 https://doi.org/10.1038/ncomms9659 eng eng Nature Publishing Group (NPG) Norges forskningsråd: 229819 Norges forskningsråd: 221712 urn:issn:2041-1723 https://hdl.handle.net/1956/11723 https://doi.org/10.1038/ncomms9659 cristin:1285031 Attribution CC BY 4.0 http://creativecommons.org/licenses/by/4.0 Copyright 2015 Rights Managed by Nature Publishing Group Earth sciences Climate science Oceanography VDP::Matematikk og Naturvitenskap: 400 Peer reviewed Journal article 2015 ftunivbergen https://doi.org/10.1038/ncomms9659 2023-03-14T17:40:30Z The globally warm climate of the early Pliocene gradually cooled from 4 million years ago, synchronous with decreasing atmospheric CO2 concentrations. In contrast, palaeoceanographic records indicate that the Nordic Seas cooled during the earliest Pliocene, before global cooling. However, a lack of knowledge regarding the precise timing of Nordic Seas cooling has limited our understanding of the governing mechanisms. Here, using marine palynology, we show that cooling in the Nordic Seas was coincident with the first trans-Arctic migration of cool-water Pacific mollusks around 4.5 million years ago, and followed by the development of a modern-like Nordic Seas surface circulation. Nordic Seas cooling precedes global cooling by 500,000 years; as such, we propose that reconfiguration of the Bering Strait and Central American Seaway triggered the development of a modern circulation in the Nordic Seas, which is essential for North Atlantic Deep Water formation and a precursor for more widespread Greenland glaciation in the late Pliocene. publishedVersion Article in Journal/Newspaper Arctic Bering Strait Greenland Nordic Seas North Atlantic Deep Water North Atlantic University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Bering Strait Greenland Pacific Nature Communications 6 1 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
topic |
Earth sciences Climate science Oceanography VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
Earth sciences Climate science Oceanography VDP::Matematikk og Naturvitenskap: 400 De Schepper, Stijn Schreck, Michael Beck, Kristina Marie Matthiessen, Jens Fahl, Kirsten Mangerud, Gunn Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes |
topic_facet |
Earth sciences Climate science Oceanography VDP::Matematikk og Naturvitenskap: 400 |
description |
The globally warm climate of the early Pliocene gradually cooled from 4 million years ago, synchronous with decreasing atmospheric CO2 concentrations. In contrast, palaeoceanographic records indicate that the Nordic Seas cooled during the earliest Pliocene, before global cooling. However, a lack of knowledge regarding the precise timing of Nordic Seas cooling has limited our understanding of the governing mechanisms. Here, using marine palynology, we show that cooling in the Nordic Seas was coincident with the first trans-Arctic migration of cool-water Pacific mollusks around 4.5 million years ago, and followed by the development of a modern-like Nordic Seas surface circulation. Nordic Seas cooling precedes global cooling by 500,000 years; as such, we propose that reconfiguration of the Bering Strait and Central American Seaway triggered the development of a modern circulation in the Nordic Seas, which is essential for North Atlantic Deep Water formation and a precursor for more widespread Greenland glaciation in the late Pliocene. publishedVersion |
format |
Article in Journal/Newspaper |
author |
De Schepper, Stijn Schreck, Michael Beck, Kristina Marie Matthiessen, Jens Fahl, Kirsten Mangerud, Gunn |
author_facet |
De Schepper, Stijn Schreck, Michael Beck, Kristina Marie Matthiessen, Jens Fahl, Kirsten Mangerud, Gunn |
author_sort |
De Schepper, Stijn |
title |
Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes |
title_short |
Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes |
title_full |
Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes |
title_fullStr |
Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes |
title_full_unstemmed |
Early Pliocene onset of modern Nordic Seas circulation related to ocean gateway changes |
title_sort |
early pliocene onset of modern nordic seas circulation related to ocean gateway changes |
publisher |
Nature Publishing Group (NPG) |
publishDate |
2015 |
url |
https://hdl.handle.net/1956/11723 https://doi.org/10.1038/ncomms9659 |
geographic |
Arctic Bering Strait Greenland Pacific |
geographic_facet |
Arctic Bering Strait Greenland Pacific |
genre |
Arctic Bering Strait Greenland Nordic Seas North Atlantic Deep Water North Atlantic |
genre_facet |
Arctic Bering Strait Greenland Nordic Seas North Atlantic Deep Water North Atlantic |
op_relation |
Norges forskningsråd: 229819 Norges forskningsråd: 221712 urn:issn:2041-1723 https://hdl.handle.net/1956/11723 https://doi.org/10.1038/ncomms9659 cristin:1285031 |
op_rights |
Attribution CC BY 4.0 http://creativecommons.org/licenses/by/4.0 Copyright 2015 Rights Managed by Nature Publishing Group |
op_doi |
https://doi.org/10.1038/ncomms9659 |
container_title |
Nature Communications |
container_volume |
6 |
container_issue |
1 |
_version_ |
1766336153132204032 |