Direct observational evidence of strong CO2 uptake in the Southern Ocean
The Southern Ocean is the primary region for the uptake of anthropogenic carbon dioxide (CO2) and is, therefore, crucial for Earth’s climate. However, the Southern Ocean CO2 flux estimates reveal substantial uncertainties and lack direct validation. Using seven independent and directly measured air-...
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American Association for the Advancement of Science (AAAS)
2024
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Online Access: | https://epic.awi.de/id/eprint/58897/ https://epic.awi.de/id/eprint/58897/1/Dong%20et%20al.%20-%202024%20-%20Direct%20observational%20evidence%20of%20strong%20CO%202.pdf https://doi.org/10.1126/sciadv.adn5781 https://hdl.handle.net/10013/epic.294a00ed-6524-46fc-af09-87de32d05a00 |
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ftawi:oai:epic.awi.de:58897 2024-09-15T18:36:58+00:00 Direct observational evidence of strong CO2 uptake in the Southern Ocean Dong, Yuanxu Bakker, Dorothee CE Bell, Thomas G Yang, Mingxi Landschützer, Peter Hauck, Judith Rödenbeck, Christian Kitidis, Vassilis Bushinsky, Seth M Liss, Peter S 2024-07-26 application/pdf https://epic.awi.de/id/eprint/58897/ https://epic.awi.de/id/eprint/58897/1/Dong%20et%20al.%20-%202024%20-%20Direct%20observational%20evidence%20of%20strong%20CO%202.pdf https://doi.org/10.1126/sciadv.adn5781 https://hdl.handle.net/10013/epic.294a00ed-6524-46fc-af09-87de32d05a00 unknown American Association for the Advancement of Science (AAAS) https://epic.awi.de/id/eprint/58897/1/Dong%20et%20al.%20-%202024%20-%20Direct%20observational%20evidence%20of%20strong%20CO%202.pdf Dong, Y. , Bakker, D. C. , Bell, T. G. , Yang, M. , Landschützer, P. , Hauck, J. orcid:0000-0003-4723-9652 , Rödenbeck, C. , Kitidis, V. , Bushinsky, S. M. and Liss, P. S. (2024) Direct observational evidence of strong CO2 uptake in the Southern Ocean , Science Advances, 10 (30), eadn5781-eadn5781 . doi:10.1126/sciadv.adn5781 <https://doi.org/10.1126/sciadv.adn5781> , hdl:10013/epic.294a00ed-6524-46fc-af09-87de32d05a00 EPIC3Science Advances, American Association for the Advancement of Science (AAAS), 10(30), pp. eadn5781-eadn5781, ISSN: 2375-2548 Article isiRev 2024 ftawi https://doi.org/10.1126/sciadv.adn5781 2024-08-05T14:05:59Z The Southern Ocean is the primary region for the uptake of anthropogenic carbon dioxide (CO2) and is, therefore, crucial for Earth’s climate. However, the Southern Ocean CO2 flux estimates reveal substantial uncertainties and lack direct validation. Using seven independent and directly measured air-sea CO2 flux datasets, we identify a 25% stronger CO2 uptake in the Southern Ocean than shipboard dataset–based flux estimates. Accounting for upper ocean temperature gradients and insufficient temporal resolution of flux products can bridge this flux gap. The gas transfer velocity parameterization is not the main reason for the flux disagreement. The profiling float data–based flux products and biogeochemistry models considerably underestimate the observed CO2 uptake, which may be due to the lack of representation of small-scale high-flux events. Our study suggests that the Southern Ocean may take up more CO2 than previously recognized, and that temperature corrections should be considered, and a higher resolution is needed in data-based bulk flux estimates. Article in Journal/Newspaper Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Science Advances 10 30 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
The Southern Ocean is the primary region for the uptake of anthropogenic carbon dioxide (CO2) and is, therefore, crucial for Earth’s climate. However, the Southern Ocean CO2 flux estimates reveal substantial uncertainties and lack direct validation. Using seven independent and directly measured air-sea CO2 flux datasets, we identify a 25% stronger CO2 uptake in the Southern Ocean than shipboard dataset–based flux estimates. Accounting for upper ocean temperature gradients and insufficient temporal resolution of flux products can bridge this flux gap. The gas transfer velocity parameterization is not the main reason for the flux disagreement. The profiling float data–based flux products and biogeochemistry models considerably underestimate the observed CO2 uptake, which may be due to the lack of representation of small-scale high-flux events. Our study suggests that the Southern Ocean may take up more CO2 than previously recognized, and that temperature corrections should be considered, and a higher resolution is needed in data-based bulk flux estimates. |
format |
Article in Journal/Newspaper |
author |
Dong, Yuanxu Bakker, Dorothee CE Bell, Thomas G Yang, Mingxi Landschützer, Peter Hauck, Judith Rödenbeck, Christian Kitidis, Vassilis Bushinsky, Seth M Liss, Peter S |
spellingShingle |
Dong, Yuanxu Bakker, Dorothee CE Bell, Thomas G Yang, Mingxi Landschützer, Peter Hauck, Judith Rödenbeck, Christian Kitidis, Vassilis Bushinsky, Seth M Liss, Peter S Direct observational evidence of strong CO2 uptake in the Southern Ocean |
author_facet |
Dong, Yuanxu Bakker, Dorothee CE Bell, Thomas G Yang, Mingxi Landschützer, Peter Hauck, Judith Rödenbeck, Christian Kitidis, Vassilis Bushinsky, Seth M Liss, Peter S |
author_sort |
Dong, Yuanxu |
title |
Direct observational evidence of strong CO2 uptake in the Southern Ocean |
title_short |
Direct observational evidence of strong CO2 uptake in the Southern Ocean |
title_full |
Direct observational evidence of strong CO2 uptake in the Southern Ocean |
title_fullStr |
Direct observational evidence of strong CO2 uptake in the Southern Ocean |
title_full_unstemmed |
Direct observational evidence of strong CO2 uptake in the Southern Ocean |
title_sort |
direct observational evidence of strong co2 uptake in the southern ocean |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2024 |
url |
https://epic.awi.de/id/eprint/58897/ https://epic.awi.de/id/eprint/58897/1/Dong%20et%20al.%20-%202024%20-%20Direct%20observational%20evidence%20of%20strong%20CO%202.pdf https://doi.org/10.1126/sciadv.adn5781 https://hdl.handle.net/10013/epic.294a00ed-6524-46fc-af09-87de32d05a00 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
EPIC3Science Advances, American Association for the Advancement of Science (AAAS), 10(30), pp. eadn5781-eadn5781, ISSN: 2375-2548 |
op_relation |
https://epic.awi.de/id/eprint/58897/1/Dong%20et%20al.%20-%202024%20-%20Direct%20observational%20evidence%20of%20strong%20CO%202.pdf Dong, Y. , Bakker, D. C. , Bell, T. G. , Yang, M. , Landschützer, P. , Hauck, J. orcid:0000-0003-4723-9652 , Rödenbeck, C. , Kitidis, V. , Bushinsky, S. M. and Liss, P. S. (2024) Direct observational evidence of strong CO2 uptake in the Southern Ocean , Science Advances, 10 (30), eadn5781-eadn5781 . doi:10.1126/sciadv.adn5781 <https://doi.org/10.1126/sciadv.adn5781> , hdl:10013/epic.294a00ed-6524-46fc-af09-87de32d05a00 |
op_doi |
https://doi.org/10.1126/sciadv.adn5781 |
container_title |
Science Advances |
container_volume |
10 |
container_issue |
30 |
_version_ |
1810480744670167040 |