The Open University ’ s repository of research publications and other research outputs Modelled natural and excess radiocarbon : Sensitivities to the gas exchange formulation and ocean transport strength
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Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. [1] Observation-based surface ocean D 14 C 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 14 C 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 14 C 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 CO 2 in seawater of 17.1 ± 3.3 cm h À1 , to find good agreement of simulated quantities with a range of data-based metrics.
منابع مشابه
Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean transport strength
[1] Observation-based surface ocean DC 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 C among all basins. This result is robust across a wide range of transport parameter sett...
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تاریخ انتشار 2012