Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes
Decadal and multidecadal changes in the meridional overturning circulation may originate from either the subpolar North Atlantic or the Southern Hemisphere. New records of carbon and oxygen isotopes from an eastern Martinique Island (Lesser Antilles) coral reveal irregular, decadal, double-step even...
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American Association for the Advancement of Science (AAAS)
2023
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Online Access: | http://dx.doi.org/10.1126/sciadv.adi1687 https://www.science.org/doi/pdf/10.1126/sciadv.adi1687 |
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craaas:10.1126/sciadv.adi1687 2024-06-09T07:40:51+00:00 Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes Paterne, Martine Druffel, Ellen R. M. Guilderson, Thomas P. Blamart, Dominique Moreau, Christophe Weil-Accardo, Jennifer Feuillet, Nathalie 2023 http://dx.doi.org/10.1126/sciadv.adi1687 https://www.science.org/doi/pdf/10.1126/sciadv.adi1687 en eng American Association for the Advancement of Science (AAAS) Science Advances volume 9, issue 50 ISSN 2375-2548 journal-article 2023 craaas https://doi.org/10.1126/sciadv.adi1687 2024-05-16T12:53:46Z Decadal and multidecadal changes in the meridional overturning circulation may originate from either the subpolar North Atlantic or the Southern Hemisphere. New records of carbon and oxygen isotopes from an eastern Martinique Island (Lesser Antilles) coral reveal irregular, decadal, double-step events of low ∆ 14 C and enhanced vertical mixing, high δ 18 O and high δ 13 C values starting in 1885. Comparison of the new and published ∆ 14 C records indicates that the last event (1956–1969) coincides with a widespread, double-step ∆ 14 C low of South Atlantic origin from 32°N to 18°S, associated with a major slowdown of the Caribbean Current transport between 1963 and 1969. This event and the past Martinique ∆ 14 C lows are attributed to pulses of northward advection of low ∆ 14 C Sub-Antarctic Mode Waters into the tropical Atlantic. They are coeval with changes of the tropical freshwater budget and likely driven by meridional overturning circulation changes since ~1880. Article in Journal/Newspaper Antarc* Antarctic North Atlantic AAAS Resource Center (American Association for the Advancement of Science) Antarctic Science Advances 9 50 |
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Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Decadal and multidecadal changes in the meridional overturning circulation may originate from either the subpolar North Atlantic or the Southern Hemisphere. New records of carbon and oxygen isotopes from an eastern Martinique Island (Lesser Antilles) coral reveal irregular, decadal, double-step events of low ∆ 14 C and enhanced vertical mixing, high δ 18 O and high δ 13 C values starting in 1885. Comparison of the new and published ∆ 14 C records indicates that the last event (1956–1969) coincides with a widespread, double-step ∆ 14 C low of South Atlantic origin from 32°N to 18°S, associated with a major slowdown of the Caribbean Current transport between 1963 and 1969. This event and the past Martinique ∆ 14 C lows are attributed to pulses of northward advection of low ∆ 14 C Sub-Antarctic Mode Waters into the tropical Atlantic. They are coeval with changes of the tropical freshwater budget and likely driven by meridional overturning circulation changes since ~1880. |
format |
Article in Journal/Newspaper |
author |
Paterne, Martine Druffel, Ellen R. M. Guilderson, Thomas P. Blamart, Dominique Moreau, Christophe Weil-Accardo, Jennifer Feuillet, Nathalie |
spellingShingle |
Paterne, Martine Druffel, Ellen R. M. Guilderson, Thomas P. Blamart, Dominique Moreau, Christophe Weil-Accardo, Jennifer Feuillet, Nathalie Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes |
author_facet |
Paterne, Martine Druffel, Ellen R. M. Guilderson, Thomas P. Blamart, Dominique Moreau, Christophe Weil-Accardo, Jennifer Feuillet, Nathalie |
author_sort |
Paterne, Martine |
title |
Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes |
title_short |
Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes |
title_full |
Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes |
title_fullStr |
Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes |
title_full_unstemmed |
Pulses of South Atlantic water into the tropical North Atlantic since 1825 from coral isotopes |
title_sort |
pulses of south atlantic water into the tropical north atlantic since 1825 from coral isotopes |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1126/sciadv.adi1687 https://www.science.org/doi/pdf/10.1126/sciadv.adi1687 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_source |
Science Advances volume 9, issue 50 ISSN 2375-2548 |
op_doi |
https://doi.org/10.1126/sciadv.adi1687 |
container_title |
Science Advances |
container_volume |
9 |
container_issue |
50 |
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1801369253586141184 |