The effect of greenhouse gas concentrations and ice sheets on the glacial AMOC in a coupled climate model

Klockmann, Marlene; Mikolajewicz, Uwe; Marotzke, Jochem

doi:https://doi.org/10.5194/cp-12-1829-2016

Articles | Volume 12, issue 9

https://doi.org/10.5194/cp-12-1829-2016

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

https://doi.org/10.5194/cp-12-1829-2016

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

Articles | Volume 12, issue 9

Research article

|

08 Sep 2016

Research article |

| 08 Sep 2016

The effect of greenhouse gas concentrations and ice sheets on the glacial AMOC in a coupled climate model

Marlene Klockmann, Uwe Mikolajewicz, and Jochem Marotzke

Download

Final revised paper (published on 08 Sep 2016)
Preprint (discussion started on 27 Apr 2016)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'Very good contribution to glacial climate models.', Anonymous Referee #1, 05 May 2016
RC2: 'Comments on “The effect of greenhouse gas concentrations and ice sheets on the glacial AMOC in a coupled climate model” by Marlene Klockmann, Uwe Mikolajewicz, and Jochem Marotzke.', Anonymous Referee #2, 20 Jun 2016
AC1: 'Author Comment - final response', Marlene Klockmann, 18 Jul 2016

Peer-review completion

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

ED: Publish subject to minor revisions (review by Editor) (20 Jul 2016) by André Paul

AR by Marlene Klockmann on behalf of the Authors (28 Jul 2016) Author's response Manuscript

ED: Publish subject to technical corrections (09 Aug 2016) by André Paul

AR by Marlene Klockmann on behalf of the Authors (15 Aug 2016) Manuscript

Short summary

We study the response of the glacial AMOC to different forcings in a coupled AOGCM. The depth of the upper overturning cell remains almost unchanged in response to the full glacial forcing. This is the result of two opposing effects: a deepening due to the ice sheets and a shoaling due to the low GHG concentrations. Increased brine release in the Southern Ocean is key to the shoaling. With glacial ice sheets, a shallower cell can be simulated with GHG concentrations below the glacial level.