Articles | Volume 13, issue 9
Biogeosciences, 13, 2823–2848, 2016
https://doi.org/10.5194/bg-13-2823-2016

Special issue: Data assimilation in carbon/biogeochemical cycles: consistent...

Biogeosciences, 13, 2823–2848, 2016
https://doi.org/10.5194/bg-13-2823-2016

Research article 13 May 2016

Research article | 13 May 2016

A probabilistic assessment of calcium carbonate export and dissolution in the modern ocean

Gianna Battaglia et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (18 Mar 2016) by Victor Brovkin
AR by Gianna Battaglia on behalf of the Authors (21 Mar 2016)  Author's response    Manuscript
ED: Reconsider after major revisions (25 Mar 2016) by Victor Brovkin
ED: Referee Nomination & Report Request started (29 Mar 2016) by Victor Brovkin
RR by Anonymous Referee #1 (07 Apr 2016)
RR by Wolfgang Koeve (18 Apr 2016)
ED: Publish subject to minor revisions (Editor review) (19 Apr 2016) by Victor Brovkin
AR by Gianna Battaglia on behalf of the Authors (20 Apr 2016)  Author's response    Manuscript
ED: Publish as is (21 Apr 2016) by Victor Brovkin
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Short summary
The marine cycle of calcium carbonate (CaCO3) influences the distribution of CO2 between atmosphere and ocean, and thereby climate. We constrain export of biogenic CaCO3 (globally: 0.72–1.05 Gt C yr−1) and dissolution within the water column (~ 80 %) in a novel Monte Carlo set-up with the Bern3D model based on alkalinity data. Whether CaCO3 dissolves in the upper ocean remains unresolved. We recommend using constant (saturation-independent) dissolution rates in Earth system models.
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