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

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...

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, Marco Steinacher, and Fortunat Joos

Download

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

- Printer-friendly version

- Supplement

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

AR by Gianna Battaglia on behalf of the Authors (22 Apr 2016)

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.