Amplification of global warming through pH dependence of DMS production simulated with a fully coupled Earth system model

Schwinger, Jörg; Tjiputra, Jerry; Goris, Nadine; Six, Katharina D.; Kirkevåg, Alf; Seland, Øyvind; Heinze, Christoph; Ilyina, Tatiana

doi:https://doi.org/10.5194/bg-14-3633-2017

Articles | Volume 14, issue 15

https://doi.org/10.5194/bg-14-3633-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Progress in quantifying ocean biogeochemistry – in honour...

https://doi.org/10.5194/bg-14-3633-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 15

Research article

|

04 Aug 2017

Research article |

| 04 Aug 2017

Amplification of global warming through pH dependence of DMS production simulated with a fully coupled Earth system model

Jörg Schwinger, Jerry Tjiputra, Nadine Goris, Katharina D. Six, Alf Kirkevåg, Øyvind Seland, Christoph Heinze, and Tatiana Ilyina

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Final revised paper (published on 04 Aug 2017)
Preprint (discussion started on 13 Feb 2017)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'useful "negative result"', David Archer, 31 Mar 2017
- AC1: 'Authors' response to a review by David Archer of ``Amplification of global warming through pH-dependence of DMS-production simulated with a fully coupled Earth system model '' by Schwinger et al.', Jörg Schwinger, 24 May 2017
RC2: 'Review Schwinger et al.', Anonymous Referee #2, 06 Apr 2017
- AC2: 'Authors' response to an anonymous review (reviewer #2) of ``Amplification of global warming through pH-dependence of DMS-production simulated with a fully coupled Earth system model '' by Schwinger et al.', Jörg Schwinger, 24 May 2017

Peer-review completion

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

ED: Publish subject to minor revisions (Editor review) (09 Jun 2017) by Matthias Hofmann

AR by Jörg Schwinger on behalf of the Authors (12 Jun 2017) Author's response Manuscript

ED: Publish as is (28 Jun 2017) by Matthias Hofmann

AR by Jörg Schwinger on behalf of the Authors (28 Jun 2017)

Short summary

Transient global warming under the high emission scenario RCP8.5 is amplified by up to 6 % if a pH dependency of marine DMS production is assumed. Importantly, this additional warming is not spatially homogeneous but shows a pronounced north–south gradient. Over the Antarctic continent, the additional warming is almost twice the global average. In the Southern Ocean we find a small DMS–climate feedback that counteracts the original reduction of DMS production due to ocean acidification.