Polar vortex important notes, Study Guides, Projects, Research of Geology

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Polar Vortex e In the previous posts, we have studied about tropical cyclones and extra tropical cyclones (Temperate Cyclone). Here we will study Polar vortex (circumpolar vortex) which is a polar cyclone. e A polar vortex is a large pocket of very cold air, typically the coldest air in the Northern Hemisphere, which sits over the polar region during the winter season. e Polar Vortex is a 1. Cold; 2. Upper tropospheric: sometime extending till the lower levels of stratosphere (At poles, the troposphere extends up to 8-9 km); 3. Circumpolar; 4. Low pressure; 5. Large cyclonic parcel of air [1000 kmj (counter-clockwise in the Northern Hemisphere) e Polar vortex is closely associated with jet streams [Rossby waves]. e It is formed mainly in winter and gets weaker in summer. e It surrounds polar highs and lie within the polar front (boundary separating the temperate and polar air masses).