Global warming actually causing colder winters because its making polar vortex stretch south into US

Climate change is often associated with the Earth getting hotter, but a rise in greenhouse gasses is leading to chillier winters in the U.S. and Europe, according to scientists from the Massachusetts Institute of Technology. Abnormal warming in the poles creates excess energy that causes the polar vortex phenomenon to weaken and split off into smaller 'sister' vortices that travel outside its typical arctic range, according to a new study in the journal Science. A split in a polar vortex can give rise to both sudden and delayed effects, much of which involves declining temperatures and extreme winter weather in the U.S. and Northern and Western Europe. 'Arctic change is likely an important cause of a chain of processes involving what they call a stratospheric polar vortex disruption, which ultimately results in periods of extreme cold in northern midlatitudes,' a band that includes ​​36 countries in North America, Europe, East Asia, and Central Asia. A split in the polar vortex can give rise to both sudden and delayed effects, much of which involves declining temperatures and extreme winter weather in the Eastern US along with Northern and Western Europe.