Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4
Here we use high-precision carbon isotope data (δ(13)C-CO(2)) to show atmospheric CO(2) during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a succession of millennial-scale processes. Enriched δ(13)C-CO(2) during peak glaciation suggests increased ocean carbon storage. Variations in...
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ftpubmed:oai:pubmedcentral.nih.gov:9481522 2023-05-15T17:33:14+02:00 Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 Menking, James A. Shackleton, Sarah A. Bauska, Thomas K. Buffen, Aron M. Brook, Edward J. Barker, Stephen Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii V. 2022-09-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9481522/ http://www.ncbi.nlm.nih.gov/pubmed/36114188 https://doi.org/10.1038/s41467-022-33166-3 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9481522/ http://www.ncbi.nlm.nih.gov/pubmed/36114188 http://dx.doi.org/10.1038/s41467-022-33166-3 © 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/s41467-022-33166-3 2022-09-25T00:46:14Z Here we use high-precision carbon isotope data (δ(13)C-CO(2)) to show atmospheric CO(2) during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a succession of millennial-scale processes. Enriched δ(13)C-CO(2) during peak glaciation suggests increased ocean carbon storage. Variations in δ(13)C-CO(2) in early MIS 4 suggest multiple processes were active during CO(2) drawdown, potentially including decreased land carbon and decreased Southern Ocean air-sea gas exchange superposed on increased ocean carbon storage. CO(2) remained low during MIS 4 while δ(13)C-CO(2) fluctuations suggest changes in Southern Ocean and North Atlantic air-sea gas exchange. A 7 ppm increase in CO(2) at the onset of Dansgaard-Oeschger event 19 (72.1 ka) and 27 ppm increase in CO(2) during late MIS 4 (Heinrich Stadial 6, ~63.5-60 ka) involved additions of isotopically light carbon to the atmosphere. The terrestrial biosphere and Southern Ocean air-sea gas exchange are possible sources, with the latter event also involving decreased ocean carbon storage. Text North Atlantic Southern Ocean PubMed Central (PMC) Southern Ocean Nature Communications 13 1 |
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Article Menking, James A. Shackleton, Sarah A. Bauska, Thomas K. Buffen, Aron M. Brook, Edward J. Barker, Stephen Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii V. Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 |
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Here we use high-precision carbon isotope data (δ(13)C-CO(2)) to show atmospheric CO(2) during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a succession of millennial-scale processes. Enriched δ(13)C-CO(2) during peak glaciation suggests increased ocean carbon storage. Variations in δ(13)C-CO(2) in early MIS 4 suggest multiple processes were active during CO(2) drawdown, potentially including decreased land carbon and decreased Southern Ocean air-sea gas exchange superposed on increased ocean carbon storage. CO(2) remained low during MIS 4 while δ(13)C-CO(2) fluctuations suggest changes in Southern Ocean and North Atlantic air-sea gas exchange. A 7 ppm increase in CO(2) at the onset of Dansgaard-Oeschger event 19 (72.1 ka) and 27 ppm increase in CO(2) during late MIS 4 (Heinrich Stadial 6, ~63.5-60 ka) involved additions of isotopically light carbon to the atmosphere. The terrestrial biosphere and Southern Ocean air-sea gas exchange are possible sources, with the latter event also involving decreased ocean carbon storage. |
format |
Text |
author |
Menking, James A. Shackleton, Sarah A. Bauska, Thomas K. Buffen, Aron M. Brook, Edward J. Barker, Stephen Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii V. |
author_facet |
Menking, James A. Shackleton, Sarah A. Bauska, Thomas K. Buffen, Aron M. Brook, Edward J. Barker, Stephen Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii V. |
author_sort |
Menking, James A. |
title |
Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 |
title_short |
Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 |
title_full |
Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 |
title_fullStr |
Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 |
title_full_unstemmed |
Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 |
title_sort |
multiple carbon cycle mechanisms associated with the glaciation of marine isotope stage 4 |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9481522/ http://www.ncbi.nlm.nih.gov/pubmed/36114188 https://doi.org/10.1038/s41467-022-33166-3 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9481522/ http://www.ncbi.nlm.nih.gov/pubmed/36114188 http://dx.doi.org/10.1038/s41467-022-33166-3 |
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/) . |
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CC-BY |
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https://doi.org/10.1038/s41467-022-33166-3 |
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Nature Communications |
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13 |
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1 |
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1766131684112072704 |