Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation
Ocean dissolved oxygen (DO) can provide insights on how the marine carbon cycle affects global climate change. However, the net global DO change and the controlling mechanisms remain uncertain through the last deglaciation. Here, we present a globally integrated DO reconstruction using thallium isot...
Published in: | Science Advances |
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American Association for the Advancement of Science (AAAS)
2024
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ftarchimer:oai:archimer.ifremer.fr:98437 2024-02-11T10:06:01+01:00 Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation Wang, Yi Costa, Kassandra M. Lu, Wanyi Hines, Sophia K. V. Nielsen, Sune G. 2024-01-19 application/pdf https://archimer.ifremer.fr/doc/00872/98437/107870.pdf https://archimer.ifremer.fr/doc/00872/98437/107871.zip https://archimer.ifremer.fr/doc/00872/98437/107872.pdf https://doi.org/10.1126/sciadv.adk2506 https://archimer.ifremer.fr/doc/00872/98437/ eng eng American Association for the Advancement of Science (AAAS) https://archimer.ifremer.fr/doc/00872/98437/107870.pdf https://archimer.ifremer.fr/doc/00872/98437/107871.zip https://archimer.ifremer.fr/doc/00872/98437/107872.pdf doi:10.1126/sciadv.adk2506 https://archimer.ifremer.fr/doc/00872/98437/ info:eu-repo/semantics/openAccess restricted use Science Advances (2375-2548) (American Association for the Advancement of Science (AAAS)), 2024-01-19 , Vol. 10 , N. 3 , P. eadk2506 (10p.) text Article info:eu-repo/semantics/article 2024 ftarchimer https://doi.org/10.1126/sciadv.adk2506 2024-01-23T23:51:10Z Ocean dissolved oxygen (DO) can provide insights on how the marine carbon cycle affects global climate change. However, the net global DO change and the controlling mechanisms remain uncertain through the last deglaciation. Here, we present a globally integrated DO reconstruction using thallium isotopes, corroborating lower global DO during the Last Glacial Maximum [19 to 23 thousand years before the present (ka B.P.)] relative to the Holocene. During the deglaciation, we reveal reoxygenation in the Heinrich Stadial 1 (~14.7 to 18 ka B.P.) and the Younger Dryas (11.7 to 12.9 ka B.P.), with deoxygenation during the Bølling-Allerød (12.9 to 14.7 ka B.P.). The deglacial DO changes were decoupled from North Atlantic Deep Water formation rates and imply that Southern Ocean ventilation controlled ocean oxygen. The coherence between global DO and atmospheric CO 2 on millennial timescales highlights the Southern Ocean’s role in deglacial atmospheric CO 2 rise. Article in Journal/Newspaper North Atlantic Deep Water North Atlantic Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Southern Ocean Science Advances 10 3 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Ocean dissolved oxygen (DO) can provide insights on how the marine carbon cycle affects global climate change. However, the net global DO change and the controlling mechanisms remain uncertain through the last deglaciation. Here, we present a globally integrated DO reconstruction using thallium isotopes, corroborating lower global DO during the Last Glacial Maximum [19 to 23 thousand years before the present (ka B.P.)] relative to the Holocene. During the deglaciation, we reveal reoxygenation in the Heinrich Stadial 1 (~14.7 to 18 ka B.P.) and the Younger Dryas (11.7 to 12.9 ka B.P.), with deoxygenation during the Bølling-Allerød (12.9 to 14.7 ka B.P.). The deglacial DO changes were decoupled from North Atlantic Deep Water formation rates and imply that Southern Ocean ventilation controlled ocean oxygen. The coherence between global DO and atmospheric CO 2 on millennial timescales highlights the Southern Ocean’s role in deglacial atmospheric CO 2 rise. |
format |
Article in Journal/Newspaper |
author |
Wang, Yi Costa, Kassandra M. Lu, Wanyi Hines, Sophia K. V. Nielsen, Sune G. |
spellingShingle |
Wang, Yi Costa, Kassandra M. Lu, Wanyi Hines, Sophia K. V. Nielsen, Sune G. Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation |
author_facet |
Wang, Yi Costa, Kassandra M. Lu, Wanyi Hines, Sophia K. V. Nielsen, Sune G. |
author_sort |
Wang, Yi |
title |
Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation |
title_short |
Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation |
title_full |
Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation |
title_fullStr |
Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation |
title_full_unstemmed |
Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation |
title_sort |
global oceanic oxygenation controlled by the southern ocean through the last deglaciation |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2024 |
url |
https://archimer.ifremer.fr/doc/00872/98437/107870.pdf https://archimer.ifremer.fr/doc/00872/98437/107871.zip https://archimer.ifremer.fr/doc/00872/98437/107872.pdf https://doi.org/10.1126/sciadv.adk2506 https://archimer.ifremer.fr/doc/00872/98437/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Deep Water North Atlantic Southern Ocean |
genre_facet |
North Atlantic Deep Water North Atlantic Southern Ocean |
op_source |
Science Advances (2375-2548) (American Association for the Advancement of Science (AAAS)), 2024-01-19 , Vol. 10 , N. 3 , P. eadk2506 (10p.) |
op_relation |
https://archimer.ifremer.fr/doc/00872/98437/107870.pdf https://archimer.ifremer.fr/doc/00872/98437/107871.zip https://archimer.ifremer.fr/doc/00872/98437/107872.pdf doi:10.1126/sciadv.adk2506 https://archimer.ifremer.fr/doc/00872/98437/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1126/sciadv.adk2506 |
container_title |
Science Advances |
container_volume |
10 |
container_issue |
3 |
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1790603387138473984 |