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Oceanography

Study links polar vortex chills to melting sea ice

New study finds global warming, melting sea ice connected to polar vortex chilly outbreaks
Seth Borenstein, The Associated Press

WASHINGTON - A new study says that as the world gets warmer, parts of North America, Europe and Asia could see more frequent and stronger visits of cold air as the world gets warmer.

Researchers say that's because of shrinking ice in the seas off Russia. Less iced would let more energy go from the ocean into the air, and that would weaken the atmospheric forces that usually keep cold air trapped in the Arctic.

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