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Extreme heat in Spain, Great Britain and France this summer was exacerbated by changes in the flow of air currents, the strong westerly winds that blow over the planet’s surface, highlighting another way in which global warming can change the climate.
Western Europe is a heatwave hotspot, with extreme heat events increasing three to four times faster than anywhere else over the past 42 years, according to a study published in Nature Communications.
In this study, for the first time, weather was linked to the movement of air currents in the northern hemisphere.
“Air currents can be caused by a number of reasons”, said co-author Dim Coumou. “The increased temperature difference between land and ocean favors the persistence of air currents in summer” he explains.
These currents are created when cold air from the poles collides with warmer air from the tropics and are responsible for weather phenomena such as storms, rain and drought, which are occurring more and more frequently in recent times.
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