Polar Vortex to return?
WASHINGTON- The Polar Vortex that plunged much of the U.S. in the deep freeze this past winter may make a return.
A new study contends as the world gets warmer, parts of North America, Europe and Asia could see for frequent and stronger bursts of frigid air. Scientists say its because the ice is shrinking in the seas off Russia.
Less ice means more energy goes from the ocean into the air and that would weaken the forces that usually keep the cold air trapped near the Arctic Circle. The study is in the journal Nature Communications.
Researchers say we may have to get used to colder winters.
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