Modeled natural and excess radiocarbon

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Author(s) Müller, S. A., Joos, F., Plattner, G. K., Edwards, N. R., Stocker, T. F.
Publication Type Journal Items, Publication Status: Published
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Title Modeled natural and excess radiocarbon
Subtitle Sensitivities to the gas exchange formulation and ocean transport strength
Author(s) Müller, S. A.
Joos, F.
Plattner, G. K.
Edwards, N. R.
Stocker, T. F.
Journal or Series Title Global Biogeochemical Cycles
Volume Number 22
Issue Number GB3011
ISSN 0886-6236
Publisher American Geophysical Union
Publication Place Washington, DC
Publication Date 2008-00-00
Abstract 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.
DOI 10.1029/2007GB003065
Additional Notes Received 18 July 2007, Accepted 18 February 2008, Published 2 August 2008
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03731
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NEBIS System Number 000041178
Source Database ID PP-43372
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  author = "M{\"{u}}ller, S. A. and Joos, F. and Plattner, G. K. and Edwards, N. R. and Stocker, T. F.",
  title = "{M}odeled natural and excess radiocarbon: {S}ensitivities to the gas exchange formulation and ocean transport strength",
  journal = "Global Biogeochemical Cycles",
  year = 2008,
  volume = "22",
  number = "GB3011",

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