The Gulf Stream pumps heat from the Gulf of Mexico to the Nordic countries. If the power stops completely, the average temperature will drop by 5-10 degrees, according to studies at the Met Office Hadley Center.
Instead of the mild winters that the Nordic countries previously had, the winter cold would end up on a par with that in Alaska, minus 50 degrees.
But it will not only get colder.
– Sweden can also be affected by more winter storms and also drier summers, says climate researcher Levke Caesar, expert on how the North Atlantic deep-sea currents are changing to SVT.
The slowdown has become clear
During the early 1990s, the risk that the Gulf Stream would slow down to 11-34 percent was estimated. But as the signs of global warming have become clearer, forecasts have also become gloomier. In a forthcoming issue of Nature Geoscience, a group of researchers confirms that the slowdown so far is 10-20 percent, and that the Gulf Stream has never been weaker in the last 1600 years.
– The slowdown has several causes. This is partly due to increased precipitation but also the acceleration of melting ice in Greenland and the Arctic, says Frederik Schenk, climate researcher at Bolin Center at Stockholm University and SMHI to SVT.
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