Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model
Understanding the oceanic uptake of carbon from the atmosphere is essential for better constraining the global budget, as well as for predicting the air-borne fraction of CO 2 emissions and thus degree of climate change. Gaining this understanding is difficult, because the 'natural' carbon...
Published in: | Tellus B: Chemical and Physical Meteorology |
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Online Access: | https://hdl.handle.net/1983/307eac6a-f915-401b-834e-f485b1f26db6 https://research-information.bris.ac.uk/en/publications/307eac6a-f915-401b-834e-f485b1f26db6 https://doi.org/10.1111/j.1600-0889.2010.00461.x http://www.scopus.com/inward/record.url?scp=78149314583&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/307eac6a-f915-401b-834e-f485b1f26db6 2024-01-28T10:08:18+01:00 Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model Matsumoto, Katsumi Tokos, Kathy S. Chikamoto, Megumi O. Ridgwell, Andy 2010-09-01 https://hdl.handle.net/1983/307eac6a-f915-401b-834e-f485b1f26db6 https://research-information.bris.ac.uk/en/publications/307eac6a-f915-401b-834e-f485b1f26db6 https://doi.org/10.1111/j.1600-0889.2010.00461.x http://www.scopus.com/inward/record.url?scp=78149314583&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Matsumoto , K , Tokos , K S , Chikamoto , M O & Ridgwell , A 2010 , ' Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model ' , Tellus B , vol. 62 , no. 4 , pp. 296-313 . https://doi.org/10.1111/j.1600-0889.2010.00461.x article 2010 ftubristolcris https://doi.org/10.1111/j.1600-0889.2010.00461.x 2024-01-04T23:44:24Z Understanding the oceanic uptake of carbon from the atmosphere is essential for better constraining the global budget, as well as for predicting the air-borne fraction of CO 2 emissions and thus degree of climate change. Gaining this understanding is difficult, because the 'natural' carbon cycle, the part of the global carbon cycle unaltered by CO 2 emissions, also responds to climate change and ocean acidification. Using a global climate model of intermediate complexity, we assess the evolution of the natural carbon cycle over the next few centuries. We find that physical mechanisms, particularly Atlantic meridional overturning circulation and gas solubility, alter the natural carbon cycle the most and lead to a significant reduction in the overall oceanic carbon uptake. Important biological mechanisms include reduced organic carbon export production due to reduced nutrient supply, increased organic carbon production due to higher temperatures and reduced CaCO 3 production due to increased ocean acidification. A large ensemble of model experiments indicates that the most important source of uncertainty in ocean uptake projections in the near term future are the upper ocean vertical diffusivity and gas exchange coefficient. By year 2300, the model's climate sensitivity replaces these two and becomes the dominant factor as global warming continues. Article in Journal/Newspaper Ocean acidification University of Bristol: Bristol Research Tellus B: Chemical and Physical Meteorology 62 4 296 313 |
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University of Bristol: Bristol Research |
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ftubristolcris |
language |
English |
description |
Understanding the oceanic uptake of carbon from the atmosphere is essential for better constraining the global budget, as well as for predicting the air-borne fraction of CO 2 emissions and thus degree of climate change. Gaining this understanding is difficult, because the 'natural' carbon cycle, the part of the global carbon cycle unaltered by CO 2 emissions, also responds to climate change and ocean acidification. Using a global climate model of intermediate complexity, we assess the evolution of the natural carbon cycle over the next few centuries. We find that physical mechanisms, particularly Atlantic meridional overturning circulation and gas solubility, alter the natural carbon cycle the most and lead to a significant reduction in the overall oceanic carbon uptake. Important biological mechanisms include reduced organic carbon export production due to reduced nutrient supply, increased organic carbon production due to higher temperatures and reduced CaCO 3 production due to increased ocean acidification. A large ensemble of model experiments indicates that the most important source of uncertainty in ocean uptake projections in the near term future are the upper ocean vertical diffusivity and gas exchange coefficient. By year 2300, the model's climate sensitivity replaces these two and becomes the dominant factor as global warming continues. |
format |
Article in Journal/Newspaper |
author |
Matsumoto, Katsumi Tokos, Kathy S. Chikamoto, Megumi O. Ridgwell, Andy |
spellingShingle |
Matsumoto, Katsumi Tokos, Kathy S. Chikamoto, Megumi O. Ridgwell, Andy Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model |
author_facet |
Matsumoto, Katsumi Tokos, Kathy S. Chikamoto, Megumi O. Ridgwell, Andy |
author_sort |
Matsumoto, Katsumi |
title |
Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model |
title_short |
Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model |
title_full |
Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model |
title_fullStr |
Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model |
title_full_unstemmed |
Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model |
title_sort |
characterizing post-industrial changes in the ocean carbon cycle in an earth system model |
publishDate |
2010 |
url |
https://hdl.handle.net/1983/307eac6a-f915-401b-834e-f485b1f26db6 https://research-information.bris.ac.uk/en/publications/307eac6a-f915-401b-834e-f485b1f26db6 https://doi.org/10.1111/j.1600-0889.2010.00461.x http://www.scopus.com/inward/record.url?scp=78149314583&partnerID=8YFLogxK |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Matsumoto , K , Tokos , K S , Chikamoto , M O & Ridgwell , A 2010 , ' Characterizing post-industrial changes in the ocean carbon cycle in an Earth system model ' , Tellus B , vol. 62 , no. 4 , pp. 296-313 . https://doi.org/10.1111/j.1600-0889.2010.00461.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1600-0889.2010.00461.x |
container_title |
Tellus B: Chemical and Physical Meteorology |
container_volume |
62 |
container_issue |
4 |
container_start_page |
296 |
op_container_end_page |
313 |
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1789336894273748992 |