Globe showing the Atlantic Ocean with arrows depicting the AMOC circulation: warm surface currents (pink/red) flowing northward from the tropics toward the Arctic, and cold deep return currents (blue/purple) flowing southward. The background shows sea surface temperature trends, with a prominent blue cold patch, the "cold blob", south of Greenland, contrasting with warming (orange/red) across the rest of the ocean.
1/ There's a system of ocean currents in the Atlantic that shapes Europe's #climate, drives monsoons, and keeps sea levels stable along the US coast.
In the last 5 years, the scientific evidence that it could collapse has shifted dramatically.
Most people have no idea. 🧵