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

Battaglia, Gianna; Steinacher, Marco; Joos, Fortunat

doi:https://doi.org/10.5194/bg-13-2823-2016

Articles | Volume 13, issue 9

Biogeosciences, 13, 2823–2848, 2016

https://doi.org/10.5194/bg-13-2823-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

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

Biogeosciences, 13, 2823–2848, 2016

https://doi.org/10.5194/bg-13-2823-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 9

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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Final revised paper (published on 13 May 2016)
Preprint (discussion started on 21 Dec 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C8793: 'Review', Anonymous Referee #1, 03 Jan 2016
RC C9309: 'Review: Battaglia et al., Probabilitic assessemtn of CaCO3 export and dissolution', Wolfgang Koeve, 20 Jan 2016
AC C10178: 'Response to review comments', Gianna Battaglia, 15 Mar 2016

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

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.