Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean
Southern Ocean deep-water circulation plays a vital role in the global carbon cycle. On geological time scales, upwelling along the Chilean margin likely contributed to the deglacial atmospheric carbon dioxide rise, but little quantitative evidence exists of carbon storage. Here, we develop an X-ray...
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ftpubmed:oai:pubmedcentral.nih.gov:9652385 2023-05-15T18:24:05+02:00 Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean Iwasaki, Shinya Lembke-Jene, Lester Nagashima, Kana Arz, Helge W. Harada, Naomi Kimoto, Katsunori Lamy, Frank 2022-11-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9652385/ http://www.ncbi.nlm.nih.gov/pubmed/36369161 https://doi.org/10.1038/s41467-022-33753-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9652385/ http://www.ncbi.nlm.nih.gov/pubmed/36369161 http://dx.doi.org/10.1038/s41467-022-33753-4 © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Nat Commun Article Text 2022 ftpubmed https://doi.org/10.1038/s41467-022-33753-4 2022-11-20T02:21:26Z Southern Ocean deep-water circulation plays a vital role in the global carbon cycle. On geological time scales, upwelling along the Chilean margin likely contributed to the deglacial atmospheric carbon dioxide rise, but little quantitative evidence exists of carbon storage. Here, we develop an X-ray Micro-Computer-Tomography method to assess foraminiferal test dissolution as proxy for paleo-carbonate ion concentrations ([CO(3)(2−)]). Our subantarctic Southeast Pacific sediment core depth transect shows significant deep-water [CO(3)(2−)] variations during the Last Glacial Maximum and Deglaciation (10-22 ka BP). We provide evidence for an increase in [CO(3)(2−)] during the early-deglacial period (15-19 ka BP) in Lower Circumpolar Deepwater. The export of such low-carbon deep-water from the Pacific to the Atlantic contributed to significantly lowered carbon storage within the Southern Ocean, highlighting the importance of a dynamic Pacific-Southern Ocean deep-water reconfiguration for shaping late-glacial oceanic carbon storage, and subsequent deglacial oceanic-atmospheric CO(2) transfer. Text Southern Ocean PubMed Central (PMC) Pacific Southern Ocean Nature Communications 13 1 |
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Article Iwasaki, Shinya Lembke-Jene, Lester Nagashima, Kana Arz, Helge W. Harada, Naomi Kimoto, Katsunori Lamy, Frank Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean |
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Article |
description |
Southern Ocean deep-water circulation plays a vital role in the global carbon cycle. On geological time scales, upwelling along the Chilean margin likely contributed to the deglacial atmospheric carbon dioxide rise, but little quantitative evidence exists of carbon storage. Here, we develop an X-ray Micro-Computer-Tomography method to assess foraminiferal test dissolution as proxy for paleo-carbonate ion concentrations ([CO(3)(2−)]). Our subantarctic Southeast Pacific sediment core depth transect shows significant deep-water [CO(3)(2−)] variations during the Last Glacial Maximum and Deglaciation (10-22 ka BP). We provide evidence for an increase in [CO(3)(2−)] during the early-deglacial period (15-19 ka BP) in Lower Circumpolar Deepwater. The export of such low-carbon deep-water from the Pacific to the Atlantic contributed to significantly lowered carbon storage within the Southern Ocean, highlighting the importance of a dynamic Pacific-Southern Ocean deep-water reconfiguration for shaping late-glacial oceanic carbon storage, and subsequent deglacial oceanic-atmospheric CO(2) transfer. |
format |
Text |
author |
Iwasaki, Shinya Lembke-Jene, Lester Nagashima, Kana Arz, Helge W. Harada, Naomi Kimoto, Katsunori Lamy, Frank |
author_facet |
Iwasaki, Shinya Lembke-Jene, Lester Nagashima, Kana Arz, Helge W. Harada, Naomi Kimoto, Katsunori Lamy, Frank |
author_sort |
Iwasaki, Shinya |
title |
Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean |
title_short |
Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean |
title_full |
Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean |
title_fullStr |
Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean |
title_full_unstemmed |
Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean |
title_sort |
evidence for late-glacial oceanic carbon redistribution and discharge from the pacific southern ocean |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9652385/ http://www.ncbi.nlm.nih.gov/pubmed/36369161 https://doi.org/10.1038/s41467-022-33753-4 |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9652385/ http://www.ncbi.nlm.nih.gov/pubmed/36369161 http://dx.doi.org/10.1038/s41467-022-33753-4 |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-022-33753-4 |
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Nature Communications |
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13 |
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