Pöppelmeier, F., Scheen, J., Jeltsch-Thömmes, A., & Stocker, T. F. (2021). Simulated stability of the Atlantic Meridional Overturning Circulation during the Last Glacial Maximum. Climate of the Past, 17(2), 615–632. https://doi.org/10.5194/cp-17-615-2021
Summary:
The stability of the Atlantic Meridional Overturning Circulation (AMOC) critically depends on its mean state. The authors of this study simulate the response of the AMOC to North Atlantic freshwater perturbations under different glacial boundary conditions. They 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.