Jennifer Francis, a meteorologist at the Woodwell Climate Research Center, emphasizes that the polar jet stream's changes are leading to more intense and prolonged weather events like the floods in Spain. These alterations, driven by accelerated Arctic warming, could cause extreme weather to become even more common, suggesting a concerning trend in climate anomalies globally.
The polar jet stream acts as a regulator for the northern hemisphere's climate, creating a boundary between cold polar air and warm equatorial air. Recently, its distortion has been observed, allowing intense cold air pockets to interact with warm Mediterranean air, resulting in severe rainstorms that have afflicted southern Europe more frequently.
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