Professor Jennifer Francis recently presented evidence showing that the loss of Arctic summer sea ice and the rapid warming of the Far North are altering the jet stream over North America, Europe, and Russia and these profound shifts increase the likelihood of more extreme weather. The so-called jet stream has increasingly taken a longer, meandering path, which has resulted in weather remaining the same for more prolonged periods.
Minimum summer sea ice in the Arctic Ocean, 1979 to 2011
The Cryosphere Today/Polar Research Group, the University of Illinois at Urbana-Champaign
BBC video: Why is the US gripped by severe weather?
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