Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength
Observation-based surface ocean Δ14C distributions and regional inventories for excess, bomb-produced radiocarbon are compared with results of two ocean models of intermediate complexity. By applying current descriptions of the air-sea gas exchange the models produce similar column inventories for e...
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2008
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Online Access: | https://boris.unibe.ch/37317/1/2007GB003065.pdf https://boris.unibe.ch/37317/ |
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ftunivbern:oai:boris.unibe.ch:37317 2023-08-20T04:08:14+02:00 Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength Müller, S. A. Joos, F. Plattner, G.-K. Edwards, N. R. Stocker, T. F. 2008 application/pdf https://boris.unibe.ch/37317/1/2007GB003065.pdf https://boris.unibe.ch/37317/ eng eng American Geophysical Union https://boris.unibe.ch/37317/ info:eu-repo/semantics/openAccess Müller, S. A.; Joos, F.; Plattner, G.-K.; Edwards, N. R.; Stocker, T. F. (2008). Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength. Global biogeochemical cycles, 22(3), n/a-n/a. Washington, D.C.: American Geophysical Union 10.1029/2007GB003065 <http://dx.doi.org/10.1029/2007GB003065> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2008 ftunivbern https://doi.org/10.1029/2007GB003065 2023-07-31T20:59:30Z Observation-based surface ocean Δ14C distributions and regional inventories for excess, bomb-produced radiocarbon are compared with results of two ocean models of intermediate complexity. By applying current descriptions of the air-sea gas exchange the models produce similar column inventories for excess 14C among all basins. This result is robust across a wide range of transport parameter settings, but inconsistent with data-based inventories. In the absence of evidence of fundamentally different gas exchange mechanisms in the North Atlantic than in the other basins, we infer regional North Atlantic 14C inventories which are considerably smaller than previous estimates. The results further suggest that the gas exchange velocity field should be reduced by (19 ± 16)%, which corresponds to a global mean air-sea gas transfer rate for CO2 in seawater of 17.1 ± 3.3 cm h−1, to find good agreement of simulated quantities with a range of data-based metrics. Article in Journal/Newspaper North Atlantic BORIS (Bern Open Repository and Information System, University of Bern) Global Biogeochemical Cycles 22 3 n/a n/a |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Müller, S. A. Joos, F. Plattner, G.-K. Edwards, N. R. Stocker, T. F. Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength |
topic_facet |
530 Physics |
description |
Observation-based surface ocean Δ14C distributions and regional inventories for excess, bomb-produced radiocarbon are compared with results of two ocean models of intermediate complexity. By applying current descriptions of the air-sea gas exchange the models produce similar column inventories for excess 14C among all basins. This result is robust across a wide range of transport parameter settings, but inconsistent with data-based inventories. In the absence of evidence of fundamentally different gas exchange mechanisms in the North Atlantic than in the other basins, we infer regional North Atlantic 14C inventories which are considerably smaller than previous estimates. The results further suggest that the gas exchange velocity field should be reduced by (19 ± 16)%, which corresponds to a global mean air-sea gas transfer rate for CO2 in seawater of 17.1 ± 3.3 cm h−1, to find good agreement of simulated quantities with a range of data-based metrics. |
format |
Article in Journal/Newspaper |
author |
Müller, S. A. Joos, F. Plattner, G.-K. Edwards, N. R. Stocker, T. F. |
author_facet |
Müller, S. A. Joos, F. Plattner, G.-K. Edwards, N. R. Stocker, T. F. |
author_sort |
Müller, S. A. |
title |
Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength |
title_short |
Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength |
title_full |
Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength |
title_fullStr |
Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength |
title_full_unstemmed |
Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength |
title_sort |
modeled natural and excess radiocarbon: sensitivities to the gas exchange formulation and ocean transport strength |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://boris.unibe.ch/37317/1/2007GB003065.pdf https://boris.unibe.ch/37317/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Müller, S. A.; Joos, F.; Plattner, G.-K.; Edwards, N. R.; Stocker, T. F. (2008). Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength. Global biogeochemical cycles, 22(3), n/a-n/a. Washington, D.C.: American Geophysical Union 10.1029/2007GB003065 <http://dx.doi.org/10.1029/2007GB003065> |
op_relation |
https://boris.unibe.ch/37317/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2007GB003065 |
container_title |
Global Biogeochemical Cycles |
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22 |
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3 |
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1774720389590548480 |