Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4
Abstract: Here we use high-precision carbon isotope data (δ13C-CO2) to show atmospheric CO2 during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a succession of millennial-scale processes. Enriched δ13C-CO2 during peak glaciation suggests increased ocean carbon storage. Variations in...
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/152741/ https://doi.org/10.1038/s41467-022-33166-3 https://orca.cardiff.ac.uk/id/eprint/152741/1/41467_2022_Article_33166.pdf |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:152741 2023-06-11T04:14:40+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 application/pdf https://orca.cardiff.ac.uk/id/eprint/152741/ https://doi.org/10.1038/s41467-022-33166-3 https://orca.cardiff.ac.uk/id/eprint/152741/1/41467_2022_Article_33166.pdf en eng Nature Research https://orca.cardiff.ac.uk/id/eprint/152741/1/41467_2022_Article_33166.pdf Menking, James A., Shackleton, Sarah A., Bauska, Thomas K., Buffen, Aron M., Brook, Edward J., Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, Severinghaus, Jeffrey P., Dyonisius, Michael N. and Petrenko, Vasilii V. 2022. Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4. Nature Communications 13 (1) , 5443. 10.1038/s41467-022-33166-3 https://doi.org/10.1038/s41467-022-33166-3 file https://orca.cardiff.ac.uk/id/eprint/152741/1/41467_2022_Article_33166.pdf doi:10.1038/s41467-022-33166-3 Article PeerReviewed 2022 ftunivcardiff https://doi.org/10.1038/s41467-022-33166-3 2023-05-04T22:38:48Z Abstract: Here we use high-precision carbon isotope data (δ13C-CO2) to show atmospheric CO2 during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a succession of millennial-scale processes. Enriched δ13C-CO2 during peak glaciation suggests increased ocean carbon storage. Variations in δ13C-CO2 in early MIS 4 suggest multiple processes were active during CO2 drawdown, potentially including decreased land carbon and decreased Southern Ocean air-sea gas exchange superposed on increased ocean carbon storage. CO2 remained low during MIS 4 while δ13C-CO2 fluctuations suggest changes in Southern Ocean and North Atlantic air-sea gas exchange. A 7 ppm increase in CO2 at the onset of Dansgaard-Oeschger event 19 (72.1 ka) and 27 ppm increase in CO2 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. Article in Journal/Newspaper North Atlantic Southern Ocean Cardiff University: ORCA (Online Research @ Cardiff) Southern Ocean Nature Communications 13 1 |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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ftunivcardiff |
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English |
description |
Abstract: Here we use high-precision carbon isotope data (δ13C-CO2) to show atmospheric CO2 during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a succession of millennial-scale processes. Enriched δ13C-CO2 during peak glaciation suggests increased ocean carbon storage. Variations in δ13C-CO2 in early MIS 4 suggest multiple processes were active during CO2 drawdown, potentially including decreased land carbon and decreased Southern Ocean air-sea gas exchange superposed on increased ocean carbon storage. CO2 remained low during MIS 4 while δ13C-CO2 fluctuations suggest changes in Southern Ocean and North Atlantic air-sea gas exchange. A 7 ppm increase in CO2 at the onset of Dansgaard-Oeschger event 19 (72.1 ka) and 27 ppm increase in CO2 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 |
Article in Journal/Newspaper |
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. |
spellingShingle |
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 |
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 Research |
publishDate |
2022 |
url |
https://orca.cardiff.ac.uk/id/eprint/152741/ https://doi.org/10.1038/s41467-022-33166-3 https://orca.cardiff.ac.uk/id/eprint/152741/1/41467_2022_Article_33166.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/152741/1/41467_2022_Article_33166.pdf Menking, James A., Shackleton, Sarah A., Bauska, Thomas K., Buffen, Aron M., Brook, Edward J., Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, Severinghaus, Jeffrey P., Dyonisius, Michael N. and Petrenko, Vasilii V. 2022. Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4. Nature Communications 13 (1) , 5443. 10.1038/s41467-022-33166-3 https://doi.org/10.1038/s41467-022-33166-3 file https://orca.cardiff.ac.uk/id/eprint/152741/1/41467_2022_Article_33166.pdf doi:10.1038/s41467-022-33166-3 |
op_doi |
https://doi.org/10.1038/s41467-022-33166-3 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1768392858452099072 |