Articles | Volume 17, issue 2
https://doi.org/10.5194/cp-17-615-2021
https://doi.org/10.5194/cp-17-615-2021
Research article
 | 
11 Mar 2021
Research article |  | 11 Mar 2021

Simulated stability of the Atlantic Meridional Overturning Circulation during the Last Glacial Maximum

Frerk Pöppelmeier, Jeemijn Scheen, Aurich Jeltsch-Thömmes, and Thomas F. Stocker

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (28 Dec 2020) by Qiuzhen Yin
AR by Frerk Pöppelmeier on behalf of the Authors (29 Dec 2020)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (07 Jan 2021) by Qiuzhen Yin
RR by Anonymous Referee #1 (19 Jan 2021)
ED: Publish subject to minor revisions (review by editor) (26 Jan 2021) by Qiuzhen Yin
AR by Frerk Pöppelmeier on behalf of the Authors (02 Feb 2021)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (03 Feb 2021) by Qiuzhen Yin
AR by Frerk Pöppelmeier on behalf of the Authors (04 Feb 2021)
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Short summary
The stability of the Atlantic Meridional Overturning Circulation (AMOC) critically depends on its mean state. We simulate the response of the AMOC to North Atlantic freshwater perturbations under different glacial boundary conditions. We find that a closed Bering Strait greatly increases the AMOC's sensitivity to freshwater hosing. Further, the shift from mono- to bistability strongly depends on the chosen boundary conditions, with weaker circulation states exhibiting more abrupt transitions.