For more than 100 years, a persistent pocket of unusually cold water south of Greenland has stood out against the steady warming of the Atlantic Ocean. Its underlying cause is a long-term decline in a key ocean circulation system, the Atlantic Meridional Overturning Circulation (AMOC). The South Greenland anomaly matters because it’s one of the most sensitive regions to changes in ocean circulation, affecting weather patterns across Europe, altering rainfall and shifting the jet stream, a high-altitude air current that steers weather systems and helps regulate temperatures across North America and Europe.
scitechdaily.com/new-research-solves-100-year-mystery-of-the-atlantics-cold-blob/