Claim: ‘Arctic amplification’ has actually reduced the risk of cold extremes in the Northern Hemisphere

From the University of Exeter Arctic warming linked to fewer European and US cold weather extremes, new study shows Climate change is unlikely to lead to more days of extreme cold, similar to those that gripped the USA in a deep freeze last winter, new research has shown. The Arctic amplification phenomenon refers to the…

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NASA on ‘the big chill’ this winter: ‘In some places temperatures were 40°F colder than average’

Blistering cold air from the Arctic plunged southward this winter, breaking U.S. temperature records.  A persistent pattern of winds spins high above the Arctic in winter. The winds, known as the polar vortex, typically blow in a fairly tight circular formation. But in late December 2013 and early January 2014, the winds loosened and frigid…