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Climate change. The Gulf Stream is unstable — this threatens with catastrophes in the future

The Gulf Stream and other currents of the Atlantic Meridional Tipping Circulation are unstable, this can lead to catastrophes in the future. This is stated in a study by scientists from the Potsdam Institute for Climate Change, the Free University of Berlin, and the University of Exeter, which is published academically in the journal Nature and retold in a brief with comments by The Guardian.

It is noted that scientists have found an “almost complete loss of stability” of the AMOS currents over the past century. In 2018, the currents had already reached their maximum slowdown in 1,600 years, but a new analysis shows they may be nearing a halt.

“Signs of destabilization (of the currents) are already visible. It's something I didn't expect and find frightening. It just can't be allowed to happen,” says study author Niklas Boers of the Potsdam Institute.

Scientists warn that stopping the AMOS currents could have catastrophic consequences worldwide:

— disrupt the rainfall patterns on which billions of people in India, South America, and West Africa depend for food;

— contribute to more storms and lower temperatures in Europe, and to rising sea levels in eastern North America;

— threaten the Amazon rainforest and Antarctic ice sheets.

The complexity of the AMOC current system and uncertainty about global warming makes it impossible to predict the date of the collapse now, the publication said. It could happen in a decade, two, or several centuries. Boer notes that it's not yet, and it's not clear exactly what level of CO2 emissions will cause the AMOC to collapse.

“So the only thing to do is to reduce emissions to as low a level as possible. The likelihood of this extraordinarily severe hit increases with every gram of CO2 we put into the atmosphere,” the scientist concluded.

— Scientists from the Swiss Federal Institute of Technology Zurich warn that mankind will face more waves of abnormal heat in the coming decades.

— NASA says the moon could trigger coastal flooding in the 2030s.

— In July, an abnormal heatwave triggered massive melting of the Greenland ice sheet.

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