Sedimentary alkalinity generation and long-term alkalinity development in the Baltic Sea

Gustafsson, Erik; Hagens, Mathilde; Sun, Xiaole; Reed, Daniel C.; Humborg, Christoph; Slomp, Caroline P.; Gustafsson, Bo G.

doi:https://doi.org/10.5194/bg-16-437-2019

Articles | Volume 16, issue 2

https://doi.org/10.5194/bg-16-437-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The 10th International Carbon Dioxide Conference (ICDC10)...

https://doi.org/10.5194/bg-16-437-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 2

Research article

|

25 Jan 2019

Research article |

| 25 Jan 2019

Sedimentary alkalinity generation and long-term alkalinity development in the Baltic Sea

Erik Gustafsson, Mathilde Hagens, Xiaole Sun, Daniel C. Reed, Christoph Humborg, Caroline P. Slomp, and Bo G. Gustafsson

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Final revised paper (published on 25 Jan 2019)
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Preprint (discussion started on 23 Jul 2018)
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Interactive discussion

Status: closed

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

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RC1: 'changing sediment generated alkalinity in the Baltic Sea', Anonymous Referee #1, 07 Aug 2018
- AC1: 'Response to referee #1', Erik Gustafsson, 25 Sep 2018
RC2: 'Review of the manuscript by Gustafsson et al', Anonymous Referee #2, 13 Aug 2018
- AC2: 'Response to referee #2', Erik Gustafsson, 25 Sep 2018
RC3: 'Please see attached review document', Anonymous Referee #3, 19 Aug 2018
- AC3: 'Response to referee #3', Erik Gustafsson, 25 Sep 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (18 Oct 2018) by Corinne Le Quere

AR by Erik Gustafsson on behalf of the Authors (06 Dec 2018) Author's response Manuscript

ED: Publish as is (27 Dec 2018) by Corinne Le Quere

AR by Erik Gustafsson on behalf of the Authors (04 Jan 2019)

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Short summary

This work highlights that iron (Fe) dynamics plays a key role in the release of alkalinity from sediments, as exemplified for the Baltic Sea. It furthermore demonstrates that burial of Fe sulfides should be included in alkalinity budgets of low-oxygen basins. The sedimentary alkalinity generation may undergo large changes depending on both organic matter loads and oxygen conditions. Enhanced release of alkalinity from the seafloor can increase the CO₂ storage capacity of seawater.