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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Springer Science and Business Media LLC
2022
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Online Access: | https://epic.awi.de/id/eprint/57558/ https://epic.awi.de/id/eprint/57558/1/Iwasaki.pdf https://hdl.handle.net/10013/epic.8d859ea6-c1ad-40f2-8f2e-60c7d635acf6 |
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ftawi:oai:epic.awi.de:57558 2024-09-15T18:36:59+00:00 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 application/pdf https://epic.awi.de/id/eprint/57558/ https://epic.awi.de/id/eprint/57558/1/Iwasaki.pdf https://hdl.handle.net/10013/epic.8d859ea6-c1ad-40f2-8f2e-60c7d635acf6 unknown Springer Science and Business Media LLC https://epic.awi.de/id/eprint/57558/1/Iwasaki.pdf Iwasaki, S. , Lembke-Jene, L. orcid:0000-0002-6873-8533 , Nagashima, K. , Arz, H. W. , Harada, N. , Kimoto, K. and Lamy, F. orcid:0000-0001-5952-1765 (2022) Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean , Nature Communications, 13 (1), p. 12 . doi:10.1038/s41467-022-33753-4 <https://doi.org/10.1038/s41467-022-33753-4> , hdl:10013/epic.8d859ea6-c1ad-40f2-8f2e-60c7d635acf6 EPIC3Nature Communications, Springer Science and Business Media LLC, 13(1), 12 p., pp. 12-12, ISSN: 2041-1723 Article isiRev 2022 ftawi https://doi.org/10.1038/s41467-022-33753-4 2024-06-24T04:30:12Z 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 [CO32−]. Our subantarctic Southeast Pacific sediment core depth transect shows significant deep-water [CO32−] variations during the Last Glacial Maximum and Deglaciation (10-22 ka BP). We provide evidence for an increase in [CO32−] 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 CO2 transfer. Article in Journal/Newspaper Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Nature Communications 13 1 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
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 [CO32−]. Our subantarctic Southeast Pacific sediment core depth transect shows significant deep-water [CO32−] variations during the Last Glacial Maximum and Deglaciation (10-22 ka BP). We provide evidence for an increase in [CO32−] 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 CO2 transfer. |
format |
Article in Journal/Newspaper |
author |
Iwasaki, Shinya Lembke-Jene, Lester Nagashima, Kana Arz, Helge W Harada, Naomi Kimoto, Katsunori Lamy, Frank |
spellingShingle |
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 |
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 |
Springer Science and Business Media LLC |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/57558/ https://epic.awi.de/id/eprint/57558/1/Iwasaki.pdf https://hdl.handle.net/10013/epic.8d859ea6-c1ad-40f2-8f2e-60c7d635acf6 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
EPIC3Nature Communications, Springer Science and Business Media LLC, 13(1), 12 p., pp. 12-12, ISSN: 2041-1723 |
op_relation |
https://epic.awi.de/id/eprint/57558/1/Iwasaki.pdf Iwasaki, S. , Lembke-Jene, L. orcid:0000-0002-6873-8533 , Nagashima, K. , Arz, H. W. , Harada, N. , Kimoto, K. and Lamy, F. orcid:0000-0001-5952-1765 (2022) Evidence for late-glacial oceanic carbon redistribution and discharge from the Pacific Southern Ocean , Nature Communications, 13 (1), p. 12 . doi:10.1038/s41467-022-33753-4 <https://doi.org/10.1038/s41467-022-33753-4> , hdl:10013/epic.8d859ea6-c1ad-40f2-8f2e-60c7d635acf6 |
op_doi |
https://doi.org/10.1038/s41467-022-33753-4 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1810480877389479936 |