North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming
Quantitative reconstructions of hydrological change during ancient greenhouse warming events provide valuable insight into warmer-than-modern hydrological cycles but are limited by paleoclimate proxy uncertainties. We present sea surface temperature (SST) records and seawater oxygen isotope (δ 18 O...
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2023
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Online Access: | http://dx.doi.org/10.1126/sciadv.abq0110 https://www.science.org/doi/pdf/10.1126/sciadv.abq0110 |
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craaas:10.1126/sciadv.abq0110 2024-09-09T19:53:44+00:00 North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming van der Ploeg, Robin Cramwinckel, Margot J. Kocken, Ilja J. Leutert, Thomas J. Bohaty, Steven M. Fokkema, Chris D. Hull, Pincelli M. Meckler, A. Nele Middelburg, Jack J. Müller, Inigo A. Penman, Donald E. Peterse, Francien Reichart, Gert-Jan Sexton, Philip F. Vahlenkamp, Maximilian De Vleeschouwer, David Wilson, Paul A. Ziegler, Martin Sluijs, Appy 2023 http://dx.doi.org/10.1126/sciadv.abq0110 https://www.science.org/doi/pdf/10.1126/sciadv.abq0110 en eng American Association for the Advancement of Science (AAAS) Science Advances volume 9, issue 4 ISSN 2375-2548 journal-article 2023 craaas https://doi.org/10.1126/sciadv.abq0110 2024-07-11T04:01:13Z Quantitative reconstructions of hydrological change during ancient greenhouse warming events provide valuable insight into warmer-than-modern hydrological cycles but are limited by paleoclimate proxy uncertainties. We present sea surface temperature (SST) records and seawater oxygen isotope (δ 18 O sw ) estimates for the Middle Eocene Climatic Optimum (MECO), using coupled carbonate clumped isotope (Δ 47 ) and oxygen isotope (δ 18 O c ) data of well-preserved planktonic foraminifera from the North Atlantic Newfoundland Drifts. These indicate a transient ~3°C warming across the MECO, with absolute temperatures generally in accordance with trace element (Mg/Ca)–based SSTs but lower than biomarker-based SSTs for the same interval. We find a transient ~0.5‰ shift toward higher δ 18 O sw , which implies increased salinity in the North Atlantic subtropical gyre and potentially a poleward expansion of its northern boundary in response to greenhouse warming. These observations provide constraints on dynamic ocean response to warming events, which are consistent with theory and model simulations predicting an enhanced hydrological cycle under global warming. Article in Journal/Newspaper Newfoundland North Atlantic Planktonic foraminifera AAAS Resource Center (American Association for the Advancement of Science) Science Advances 9 4 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Quantitative reconstructions of hydrological change during ancient greenhouse warming events provide valuable insight into warmer-than-modern hydrological cycles but are limited by paleoclimate proxy uncertainties. We present sea surface temperature (SST) records and seawater oxygen isotope (δ 18 O sw ) estimates for the Middle Eocene Climatic Optimum (MECO), using coupled carbonate clumped isotope (Δ 47 ) and oxygen isotope (δ 18 O c ) data of well-preserved planktonic foraminifera from the North Atlantic Newfoundland Drifts. These indicate a transient ~3°C warming across the MECO, with absolute temperatures generally in accordance with trace element (Mg/Ca)–based SSTs but lower than biomarker-based SSTs for the same interval. We find a transient ~0.5‰ shift toward higher δ 18 O sw , which implies increased salinity in the North Atlantic subtropical gyre and potentially a poleward expansion of its northern boundary in response to greenhouse warming. These observations provide constraints on dynamic ocean response to warming events, which are consistent with theory and model simulations predicting an enhanced hydrological cycle under global warming. |
format |
Article in Journal/Newspaper |
author |
van der Ploeg, Robin Cramwinckel, Margot J. Kocken, Ilja J. Leutert, Thomas J. Bohaty, Steven M. Fokkema, Chris D. Hull, Pincelli M. Meckler, A. Nele Middelburg, Jack J. Müller, Inigo A. Penman, Donald E. Peterse, Francien Reichart, Gert-Jan Sexton, Philip F. Vahlenkamp, Maximilian De Vleeschouwer, David Wilson, Paul A. Ziegler, Martin Sluijs, Appy |
spellingShingle |
van der Ploeg, Robin Cramwinckel, Margot J. Kocken, Ilja J. Leutert, Thomas J. Bohaty, Steven M. Fokkema, Chris D. Hull, Pincelli M. Meckler, A. Nele Middelburg, Jack J. Müller, Inigo A. Penman, Donald E. Peterse, Francien Reichart, Gert-Jan Sexton, Philip F. Vahlenkamp, Maximilian De Vleeschouwer, David Wilson, Paul A. Ziegler, Martin Sluijs, Appy North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming |
author_facet |
van der Ploeg, Robin Cramwinckel, Margot J. Kocken, Ilja J. Leutert, Thomas J. Bohaty, Steven M. Fokkema, Chris D. Hull, Pincelli M. Meckler, A. Nele Middelburg, Jack J. Müller, Inigo A. Penman, Donald E. Peterse, Francien Reichart, Gert-Jan Sexton, Philip F. Vahlenkamp, Maximilian De Vleeschouwer, David Wilson, Paul A. Ziegler, Martin Sluijs, Appy |
author_sort |
van der Ploeg, Robin |
title |
North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming |
title_short |
North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming |
title_full |
North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming |
title_fullStr |
North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming |
title_full_unstemmed |
North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming |
title_sort |
north atlantic surface ocean warming and salinization in response to middle eocene greenhouse warming |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1126/sciadv.abq0110 https://www.science.org/doi/pdf/10.1126/sciadv.abq0110 |
genre |
Newfoundland North Atlantic Planktonic foraminifera |
genre_facet |
Newfoundland North Atlantic Planktonic foraminifera |
op_source |
Science Advances volume 9, issue 4 ISSN 2375-2548 |
op_doi |
https://doi.org/10.1126/sciadv.abq0110 |
container_title |
Science Advances |
container_volume |
9 |
container_issue |
4 |
_version_ |
1809923187948912640 |