polar vortex

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• Polar vortex — The polar vortex is a persistent, large scale cyclone located near the Earth s poles, in the middle and upper troposphere and the stratosphere. It surrounds the polar highs and is part of the polar front. Arctic and Antarctic variationThe vortex… …   Wikipedia

• Polar cyclone — Polar cyclones (also known as polar vortices , Arctic cyclones , and sub polar cyclones ) are vast areas of low pressure which strengthen in the winter and weaken in the summer.Halldór Björnsson. [http://andvari.vedur.is/… …   Wikipedia

• Polar cells — Polar Cell are part of a three cell movement involving Hadley Cells and Ferrel Cells which show atmospheric circulation and Surface winds.Cold dense air descends over the Poles which creates high pressure, this cold air moves along the surface to …   Wikipedia

• Vortex — A vortex (pl. vortices ) is a spinning, often turbulent, flow of fluid. Any spiral motion with closed streamlines is vortex flow. The motion of the fluid swirling rapidly around a center is called a vortex. The speed and rate of rotation of the… …   Wikipedia

• vortex — [[t]vɔ͟ː(r)teks[/t]] vortexes, vortices (plural) [pr][[t]vɔ͟ː(r)tɪsiːz[/t]][/pr] 1) N COUNT A vortex is a mass of wind or water that spins round so fast that it pulls objects down into its empty centre. The polar vortex is a system of wintertime… …   English dictionary

• Polar wind — is the permanent outflow of ionization from the polar regions of the magnetosphere. [http://amsglossary.allenpress.com/glossary/browse?s=p p=43 AMS Glossary] ] Ionospheric Plasma SourceThe ‘ground state’ of the ionosphere consists of the baseline …   Wikipedia

• Polar low — over the Barents Sea on February 27, 1987 A polar low is a small scale, long lived atmospheric low pressure system (depression) that is found over the ocean areas poleward of the main polar front in both the Northern and Southern Hemispheres. The …   Wikipedia

• Polar (personnage) — Personnages de Crash Bandicoot Cet article répertorie l ensemble des personnages de la série de jeux vidéo Crash Bandicoot. Sommaire 1 Les protagonistes 1.1 Crash Bandicoot 1.2 Coco Bandicoot 1.3 Crunc …   Wikipédia en Français

• Vórtice polar — El vórtice polar es un ciclón persistente a gran escala situado cerca de los polos terrestres, en la media y alta troposfera y la estratosfera. Envuelve los altos polares y forma parte del frente polar. El vórtice es más potente en el invierno… …   Wikipedia Español

• Mars Polar Lander — Vue d artiste de la sonde Mars Polar Lander à la surface de Mars. Mars Polar Lander était une sonde faisant partie intégrante du programme Mars Surveyor 98 de la NASA. Cette sonde, destinée à se poser sur sol martien, comprenait aussi un… …   Wikipédia en Français

• Cyclone — This article is about the meteorological phenomenon. For other uses, see Cyclone (disambiguation). Polar low over the Barents Sea on February 27, 1987 In meteorology, a cyclone is an area of closed, circular fluid motion rotating in the same… …   Wikipedia