A 'cold blob' in the Atlantic could be a sign of AMOC shutdown – CNN

A mysterious "cold blob" in the North Atlantic Ocean south of Greenland has cooled by nearly 1 degree Celsius since 1900 while surrounding waters warm, and new research attributes this to a weakening of the Atlantic Meridional Overturning Circulation (AMOC), a critical ocean current system. The findings suggest the AMOC is approaching a dangerous tipping point that could trigger catastrophic global consequences, including accelerated sea level rise on the US East Coast, severe winters in Europe, and prolonged African droughts. Scientists found that the cooling extends deep into the ocean, ruling out atmospheric causes alone and pointing instead to reduced heat transport from the AMOC itself.