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Subject: Polar Votex Author: George Thecar [ Next Thread | Previous Thread | Next Message | Previous Message ] Date Posted: 14:53:38 02/21/14 Fri In reply to: Jon 's message, "Today's Grouch" on 19:21:46 02/08/14 Sat The best Polar Vortex explanation I have seen http://ca.news.yahoo.com/blogs/geekquinox/nasa-satellite-tracks-big-chill-polar-vortex-214027857.html [ Next Thread | Previous Thread | Next Message | Previous Message ]

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[> [> Subject: Re: Polar Votex Author: wexwiz543 [ Edit | View ] Date Posted: 00:21:27 02/22/14 Sat There is a polar jet that goes around the globe from west to east at the tropopause or about 30-40 K feet. Undulations form in the path of the polar jet and create what is called Rosby waves that flow more meridionally, or north and South. As these waves form, they bring warm air north and cold air south. This year the cold air was brought south over North America. The previous two years, the cold air was brought south over Europe. The term Polar Vortex is a bit simplistic since to entire air over the pole dose not rotate in one common circulation. Wexwiz543 a meteorologist >The best Polar Vortex explanation I have seen > > >href="http://ca.news.yahoo.com/blogs/geekquinox/nasa-sa >tellite-tracks-big-chill-polar-vortex-214027857.html">h >ttp://ca.news.yahoo.com/blogs/geekquinox/nasa-satellite >-tracks-big-chill-polar-vortex-214027857.html