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Warm US West, cold East: A 4,000-year pattern

2014-04-16 04:00:00| Climate Ark Climate Change & Global Warming Newsfeed

PhysOrg: Last winter's curvy jet stream pattern brought mild temperatures to western North America and harsh cold to the East. A University of Utah-led study shows that pattern became more pronounced 4,000 years ago, and suggests it may worsen as Earth's climate warms. "If this trend continues, it could contribute to more extreme winter weather events in North America, as experienced this year with warm conditions in California and Alaska and intrusion of cold Arctic air across the eastern USA," says geochemist...

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