Polar vortex is a cyclone but in a form of a cold wave that can cause an extreme cold weather. The polar vortex strengthen during winter and weaken during the summer. In this year of 2014 there is not only one vortex but two polar vortices that is active in the northern hemisphere of our world, and due to the extreme cold weather, the economic of the world has dropped down. Not only the economic that have been affected but also the environment that have been affected from such an extreme weather.
Citation:
"North America Zoom-in Surface Weather Map". National Weather Service. 8 January 2014. Retrieved January 8, 2014."
"Cost of the cold: 'polar vortex' spell cost US economy $5bn". The Associated Press. The Guardian. January 9, 2014. Retrieved January 9, 2014."
"U.S. polar vortex sets record low temps, kills 21". CBC News. January 8, 2014."
San Arzarni 11A
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