Atlantic Meridional Overturning Circulation faces rising collapse risk, scientists warn

Scientists warn that accelerating global temperature anomalies and record heat waves are increasing the risk of a collapse of the Atlantic Meridional Overturning Circulation (AMOC), a key oceanic current that moderates climate in Europe and the eastern United States. A recent, non‑peer‑reviewed study estimates a roughly 10 % chance of AMOC failure by 2100 under current emissions, rising to 80‑100 % if fossil‑fuel burning continues unabated.

The potential shutdown could trigger severe climate disruptions: heightened heat waves in Europe, sea‑level rise along the U.S. East Coast, colder winters in northern Europe, and altered precipitation patterns worldwide. The study also notes that large AI data centers are driving up electricity demand, hindering progress toward renewable energy goals. While the model’s uncertainties are acknowledged, researchers emphasize the urgency of monitoring the AMOC due to its far‑reaching impacts.