A Dimming Ocean Conveyor Could Reshape Weather Worldwide
A weakening or shutdown of the Atlantic Meridional Overturning Circulation (the Gulf Stream system) would reallocate heat rather than abruptly end warming: northwestern Europe could see much colder winters and drier summers; tropical rainfall belts could shift south, weakening Sahel and South Asian monsoons; northeastern North America could face higher sea levels along the coast; North Atlantic storms and plankton productivity would change; ocean carbon uptake could fall, potentially leaving more CO2 in the atmosphere. The exact outcomes depend on how much warming has already occurred, and these model-based projections illustrate broad, interconnected impacts rather than a simple, uniform change.
