A 'cold blob' in the Atlantic could be a sign of AMOC shutdown
Points and comments are a snapshot, not live.
New study links Atlantic's 'cold blob' to weakening ocean currents that could reach a tipping point.
A cold patch south of Greenland has cooled nearly 1 degree Celsius since 1900 while the rest of the ocean warms. A new study concludes this anomaly signals a weakening Atlantic Meridional Overturning Circulation (AMOC), a vast ocean current system that distributes heat globally. Researchers combined satellite data and climate models, finding cooling extends deep underwater where atmospheric conditions have little influence, pointing to reduced heat transport by AMOC itself.
An AMOC shutdown would cause accelerated sea level rise on the US East Coast, deep winter freezes across Europe, and African monsoon disruption. Some scientists warn the system is at its weakest in roughly 1,000 years and could reach a collapse tipping point this century.
What commenters are saying
Commenters emphasize the AMOC's neglected significance, noting European agriculture and winter habitability face existential threats if circulation collapses. One notes the cold blob's implications have been taught for decades as a climate model prediction, not a recent discovery. Skeptics question whether only a few years of data justifies catastrophe claims and worry interventions might cause harm. Discussion of farmer blame, wealth inequality, and scale limitations (petawatt forces far exceed human technological capacity) surfaces but remains secondary to concern about underappreciated systemic risk.