{"version":"1.0","type":"link","title":"Polar vortex - Newikis","description":"A polar vortex, more formally a circumpolar vortex, is a large region of cold, rotating air; polar vortices encircle both of Earth's polar regions. Polar vortices also exist on other rotating, low-obliquity planetary bodies. The term polar vortex can be used to describe two distinct phenomena; the…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://upload.wikimedia.org/wikipedia/commons/7/76/November2013_polar_vortex_geopotentialheight_mean_Large.jpg","thumbnail_width":636,"thumbnail_height":689}