Some cites about the Arctic, as mentioned in FTA.<p><a href="https://neven1.typepad.com/blog/2013/04/sudden-stratospheric-warmings-causes-effects.html" rel="nofollow">https://neven1.typepad.com/blog/2013/04/sudden-stratospheric...</a><p><a href="https://insideclimatenews.org/news/31102018/jet-stream-climate-change-study-extreme-weather-arctic-amplification-temperature" rel="nofollow">https://insideclimatenews.org/news/31102018/jet-stream-clima...</a><p><a href="https://weather.com/forecast/national/news/2019-01-10-the-polar-vortex-has-fallen-apart-and-that-could-unleash-a-much" rel="nofollow">https://weather.com/forecast/national/news/2019-01-10-the-po...</a>