Articles | Volume 8, issue 7
Geosci. Model Dev., 8, 2079–2094, 2015
https://doi.org/10.5194/gmd-8-2079-2015

Special issue: The Transport Matrix Method (TMM) for ocean biogeochemical...

Geosci. Model Dev., 8, 2079–2094, 2015
https://doi.org/10.5194/gmd-8-2079-2015

Methods for assessment of models 16 Jul 2015

Methods for assessment of models | 16 Jul 2015

14C-age tracers in global ocean circulation models

W. Koeve et al.

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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Anna Wenzel on behalf of the Authors (29 May 2015)  Author's response
ED: Reconsider after major revisions (02 Jun 2015) by Didier Roche
ED: Referee Nomination & Report Request started (03 Jun 2015) by Didier Roche
RR by Anonymous Referee #5 (21 Jun 2015)
RR by Anonymous Referee #4 (22 Jun 2015)
ED: Publish subject to minor revisions (Editor review) (30 Jun 2015) by Didier Roche
AR by Wolfgang Koeve on behalf of the Authors (02 Jul 2015)  Author's response    Manuscript
ED: Publish as is (02 Jul 2015) by Didier Roche
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Short summary
The natural abundance of 14C in CO2 dissolved in seawater is often used to evaluate circulation and age in the ocean and in ocean models. We study limitations of using natural 14C to determine the time elapsed since water had contact with the atmosphere. We find that, globally, bulk 14C age is dominated by two equally important components, (1) the time component of circulation and (2) the “preformed 14C-age”. Considering preformed 14C-age is critical for an assessment of circulation in models.