https://www.icos-cp.eu/news-and-events/news/scientists-warn-collapse-atlantic-meridional-overturning-circulation-amoc
At the end of October, 42 climate scientists sent an open letter to the Nordic Council of Ministers, urging them to draw attention to the major ocean circulation change in the Atlantic. “A string of scientific studies in the past few years suggests that this risk has so far been greatly underestimated”, they write. ICOS Ocean stations in the North Atlantic monitor the situation closely and can provide near-real-time data on any possible changes in the AMOC strength.
The risk of the Atlantic Meridional Overturning Circulation (AMOC) collapsing is higher than previously estimated, warns a group of 42 climate scientists in their open letter to the Nordic Council of Ministers. The AMOC is a system of ocean currents that transports warm water into the North Atlantic and provides Europe its mild climate. The latest IPCC report in 2021 estimated with medium confidence that the AMOC “will not collapse abruptly before 2100, but if it were to occur, it would very likely cause abrupt shifts in regional weather patterns, and large impacts on ecosystems and human activities.”
Shouldn't "emergency" require something likely and urgent, not something which is in the worst case many decades away?
Why "global"? If you follow the model that they picked to demonstrate their point, the speculative scenario that they think about with AMOC collapse has most of Earth hotter by ~+2.5C due to AGW in general, except Scandinavia and British Isles, which would be ~-2.5C.
Those temperatures are the point of risk to collapse ocean circilation before 2100. Such a collapse would have devastating consequences for human activities, with adaptation being impossible. So global action has to be taken before 2030 to reverse global warming trend.
Samir Touzani
Haven't you already adapted to much colder climate in Canada, something what apparently should be deemed as remarkable achievement, as you suggest that for inhabitants of Scandinavia it would be "impossible"?
Iconic ocean-current system is safe from climate collapse ― for now
But even a weakening of the Atlantic Meridional Overturning Circulation could have grave consequences worldwide...
https://www.nature.com/articles/s41586-024-08544-0
https://www.nature.com/articles/d41586-025-00551-z
Is a monster web of ocean currents headed for collapse? The race is on to find out
Research ships rarely brave the Greenland Sea in winter. Early this year, scientists ventured into the ice-covered waters to capture crucial data about the planet’s future...
"Early this year, scientists made a rare winter excursion into the ice-covered waters of the Greenland Sea to capture crucial data about the planet’s future. They are investigating the Atlantic Meridional Overturning Circulation (AMOC), a network of currents that affects weather conditions for billions of people around the world. Scientists are increasingly concerned that climate change is pushing this crucial current system to a tipping point — and if that happens, temperatures in north-western Europe could drop by as much as 15 °C, plunging the region into a new ice age, while the southern hemisphere would suffer more severe warming and rainfall could be disrupted in the Amazon basin. “We are in this messy middle of trying to understand what is happening,” says physical oceanographer Susan Lozier."
Article Physics-based early warning signal shows that AMOC is on tip...
https://www.nature.com/articles/d41586-025-01885-4
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