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polar low

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  • 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 region — Earth s polar regions are the areas of the globe surrounding the poles also known as frigid zones. The North Pole and South Pole being the centers, these regions are dominated by the polar ice caps, resting respectively on the Arctic Ocean and… …   Wikipedia

  • 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 ecology — is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the northern hemisphere, and it contains land and the islands that surround it. Antarctic is… …   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 stratospheric cloud — Antarctic stratospheric cloud (nacreous clouds) Abbreviation PSC Altitude 15,000–25,000 m (50,000–80,000 ft) …   Wikipedia

  • Polar meteorology — focuses on weather in environments dominated by extremely low temperatures. Surface temperature inversion are typical of polar environments and lead to the katabatic wind phenomenon. The vertical temperature structure of polar environments tends… …   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

  • polar ecosystem — Introduction       complex of living organisms in polar regions such as polar barrens and tundra.  Polar barrens and tundra are found at high latitudes on land surfaces not covered by perpetual ice and snow. These areas lying beyond the tree line …   Universalium

  • Low-pressure area — This depiction of the Hadley cell shows the process which sustains low pressure areas. Diverging winds aloft allow for lower pressure and convergence at the Earth s surface, which leads to upward motion. A low pressure area, or low , is a region… …   Wikipedia

  • Polar bear — This article is about the animal. For other uses, see Polar bear (disambiguation) …   Wikipedia

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