The polar vortex is a well-documented, long-existing pattern, but some scientists say climate change could be making it unstable—with potentially serious consequences
Above the Arctic hovers a counter-clockwise spinning mass of cold air that grows and shrinks with the changing seasons—the polar vortex.The record-breaking cold front heading into the continental U.S. is the result of an unusually far south polar vortex says Bob Ovarec, a lead weather forecaster with the National Weather Service.
In extreme cold, frostbite can attack exposed skin in minutes, and prolonged exposure leads to hypothermia. At least 21 people died as a result of a 2019 polar vortex outbreak.could be making it unstable, with potentially serious consequences.The vortex is constantly spinning in a counter-clockwise direction around the North Pole. During the summer months in the Northern Hemisphere, the edge of the vortex sits at a higher latitude, and in winter months, it edges south.
Jet streams are propelled forward by temperature differences and the Earth's rotation. Wider temperature differences create faster-moving winds.
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