Closure of the Bering Strait caused Mid-Pleistocene Transition cooling
The Mid-Pleistocene Transition (MPT) is characterised by cooling and lengthening glacial cycles from 600–1200 ka, thought to be driven by reductions in glacial CO2 in particular from ~900 ka onwards. Reduced high latitude upwelling, a process that retains CO2 within the deep ocean over glacials, cou...
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:117830 2023-05-15T15:43:43+02:00 Closure of the Bering Strait caused Mid-Pleistocene Transition cooling Kender, Sev Ravelo, Ana Christina Worne, Savannah Swann, George E. A. Leng, Melanie J. Asahi, Hirofumi Becker, Julia Detlef, Henrieka Aiello, Ivano W. Andreasen, Dyke Hall, Ian R. 2018-12-19 application/pdf https://orca.cardiff.ac.uk/id/eprint/117830/ https://doi.org/10.1038/s41467-018-07828-0 https://orca.cardiff.ac.uk/id/eprint/117830/1/Kender%20et%20al%202018%20_%20Nature%20Comms.pdf en eng Nature Research https://orca.cardiff.ac.uk/id/eprint/117830/1/Kender%20et%20al%202018%20_%20Nature%20Comms.pdf Kender, Sev, Ravelo, Ana Christina, Worne, Savannah, Swann, George E. A., Leng, Melanie J., Asahi, Hirofumi, Becker, Julia https://orca.cardiff.ac.uk/view/cardiffauthors/A0062859.html, Detlef, Henrieka https://orca.cardiff.ac.uk/view/cardiffauthors/A1749898S.html, Aiello, Ivano W., Andreasen, Dyke and Hall, Ian R. https://orca.cardiff.ac.uk/view/cardiffauthors/A002402L.html orcid:0000-0001-6960-1419 orcid:0000-0001-6960-1419 2018. Closure of the Bering Strait caused Mid-Pleistocene Transition cooling. Nature Communications 9 (1) , 5386. 10.1038/s41467-018-07828-0 https://doi.org/10.1038/s41467-018-07828-0 file https://orca.cardiff.ac.uk/117830/1/Kender%20et%20al%202018%20_%20Nature%20Comms.pdf doi:10.1038/s41467-018-07828-0 cc_by CC-BY Article PeerReviewed 2018 ftunivcardiff https://doi.org/10.1038/s41467-018-07828-0 2022-10-27T22:46:09Z The Mid-Pleistocene Transition (MPT) is characterised by cooling and lengthening glacial cycles from 600–1200 ka, thought to be driven by reductions in glacial CO2 in particular from ~900 ka onwards. Reduced high latitude upwelling, a process that retains CO2 within the deep ocean over glacials, could have aided drawdown but has so far not been constrained in either hemisphere over the MPT. Here, we find that reduced nutrient upwelling in the Bering Sea, and North Pacific Intermediate Water expansion, coincided with the MPT and became more persistent at ~900 ka. We propose reduced upwelling was controlled by expanding sea ice and North Pacific Intermediate Water formation, which may have been enhanced by closure of the Bering Strait. The regional extent of North Pacific Intermediate Water across the subarctic northwest Pacific would have contributed to lower atmospheric CO2 and global cooling during the MPT. Article in Journal/Newspaper Bering Sea Bering Strait Sea ice Subarctic Cardiff University: ORCA (Online Research @ Cardiff) Bering Sea Bering Strait Pacific Nature Communications 9 1 |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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ftunivcardiff |
language |
English |
description |
The Mid-Pleistocene Transition (MPT) is characterised by cooling and lengthening glacial cycles from 600–1200 ka, thought to be driven by reductions in glacial CO2 in particular from ~900 ka onwards. Reduced high latitude upwelling, a process that retains CO2 within the deep ocean over glacials, could have aided drawdown but has so far not been constrained in either hemisphere over the MPT. Here, we find that reduced nutrient upwelling in the Bering Sea, and North Pacific Intermediate Water expansion, coincided with the MPT and became more persistent at ~900 ka. We propose reduced upwelling was controlled by expanding sea ice and North Pacific Intermediate Water formation, which may have been enhanced by closure of the Bering Strait. The regional extent of North Pacific Intermediate Water across the subarctic northwest Pacific would have contributed to lower atmospheric CO2 and global cooling during the MPT. |
format |
Article in Journal/Newspaper |
author |
Kender, Sev Ravelo, Ana Christina Worne, Savannah Swann, George E. A. Leng, Melanie J. Asahi, Hirofumi Becker, Julia Detlef, Henrieka Aiello, Ivano W. Andreasen, Dyke Hall, Ian R. |
spellingShingle |
Kender, Sev Ravelo, Ana Christina Worne, Savannah Swann, George E. A. Leng, Melanie J. Asahi, Hirofumi Becker, Julia Detlef, Henrieka Aiello, Ivano W. Andreasen, Dyke Hall, Ian R. Closure of the Bering Strait caused Mid-Pleistocene Transition cooling |
author_facet |
Kender, Sev Ravelo, Ana Christina Worne, Savannah Swann, George E. A. Leng, Melanie J. Asahi, Hirofumi Becker, Julia Detlef, Henrieka Aiello, Ivano W. Andreasen, Dyke Hall, Ian R. |
author_sort |
Kender, Sev |
title |
Closure of the Bering Strait caused Mid-Pleistocene Transition cooling |
title_short |
Closure of the Bering Strait caused Mid-Pleistocene Transition cooling |
title_full |
Closure of the Bering Strait caused Mid-Pleistocene Transition cooling |
title_fullStr |
Closure of the Bering Strait caused Mid-Pleistocene Transition cooling |
title_full_unstemmed |
Closure of the Bering Strait caused Mid-Pleistocene Transition cooling |
title_sort |
closure of the bering strait caused mid-pleistocene transition cooling |
publisher |
Nature Research |
publishDate |
2018 |
url |
https://orca.cardiff.ac.uk/id/eprint/117830/ https://doi.org/10.1038/s41467-018-07828-0 https://orca.cardiff.ac.uk/id/eprint/117830/1/Kender%20et%20al%202018%20_%20Nature%20Comms.pdf |
geographic |
Bering Sea Bering Strait Pacific |
geographic_facet |
Bering Sea Bering Strait Pacific |
genre |
Bering Sea Bering Strait Sea ice Subarctic |
genre_facet |
Bering Sea Bering Strait Sea ice Subarctic |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/117830/1/Kender%20et%20al%202018%20_%20Nature%20Comms.pdf Kender, Sev, Ravelo, Ana Christina, Worne, Savannah, Swann, George E. A., Leng, Melanie J., Asahi, Hirofumi, Becker, Julia https://orca.cardiff.ac.uk/view/cardiffauthors/A0062859.html, Detlef, Henrieka https://orca.cardiff.ac.uk/view/cardiffauthors/A1749898S.html, Aiello, Ivano W., Andreasen, Dyke and Hall, Ian R. https://orca.cardiff.ac.uk/view/cardiffauthors/A002402L.html orcid:0000-0001-6960-1419 orcid:0000-0001-6960-1419 2018. Closure of the Bering Strait caused Mid-Pleistocene Transition cooling. Nature Communications 9 (1) , 5386. 10.1038/s41467-018-07828-0 https://doi.org/10.1038/s41467-018-07828-0 file https://orca.cardiff.ac.uk/117830/1/Kender%20et%20al%202018%20_%20Nature%20Comms.pdf doi:10.1038/s41467-018-07828-0 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-07828-0 |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
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1766377913328861184 |