The study, an analysis of the width and chemical composition of growth rings in clams and other bivalves, examined changes in the ocean south of Greenland during the last 150 years and found that the inflow of freshwater has been disrupting the #subpolargyre, which distributes ocean heat, since the 1950s.

The gyre is a central part of the deep water formation that keeps the Atlantic Meridional Overturning Current (#AMOC) running.

https://insideclimatenews.org/news/03102025/atlantic-meridional-overturning-current-disruption/