A new study says the cold blob in the North Atlantic is from a weakening AMOC.
www.nature.com
If the AMOC shuts down we are screwed.

Weakened Atlantic Meridional Overturning Circulation causes the historical North Atlantic Warming Hole - Communications Earth & Environment
The North Atlantic Warming Hole is tied to a weakened Atlantic Meridional Overturning Circulation during the past century, according to climate models and observation data.

If the AMOC shuts down we are screwed.