Only the Gulf Stream
The Gulf Stream system could collapse as soon as 2025, a new study suggests. The shutting down of the vital ocean currents, called the Atlantic Meridional Overturning Circulation (Amoc) by scientists, would bring catastrophic climate impacts. Amoc was already known to be at its weakest in 1,600 years owing to global heating and researchers spotted warning signs of a tipping point in 2021.
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Amoc carries warm ocean water northwards towards the pole where it cools and sinks, driving the Atlantic’s currents. But an influx of fresh water from the accelerating melting of Greenland’s ice cap and other sources is increasingly smothering the currents.
A collapse of Amoc would have disastrous consequences around the world, severely disrupting the rains that billions of people depend on for food in India, South America and west Africa. It would increase storms and drop temperatures in Europe, and lead to a rising sea level on the eastern cost of North America. It would also further endanger the Amazon rainforest and Antarctic ice sheets.
Never mind; let’s talk about the Barbie movie.
Realclimate has a somewhat less sensational take on this, but it’s still plenty bad. No reason to feel complacent about it, far from it.
In the first part of the linked article, you’ll learn that the AMOC and the Gulf Stream aren’t quite the same thing. In a way, AMOC is more important to climate than the Gulf Stream is.
Might as well whistle a happy tune whilst walking past the graveyard.