Articles | Volume 17, issue 2
Clim. Past, 17, 615–632, 2021
https://doi.org/10.5194/cp-17-615-2021
Clim. Past, 17, 615–632, 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 et al.

Data sets

Model output from the Bern3D model of pre-industrial and Last Glacial Maximum Frerk Pöppelmeier, Jeemijn Scheen, Aurich Jeltsch-Thömmes, and Thomas F. Stocker https://doi.org/10.5281/zenodo.4436092

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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.