Polar

Thao Tran Polar where is coldest, windy and snowy of the earth. At the winter, just only ice in there and only polar bear lives in there. Weather in there just only cool. However, when summer came the ice started melting and freeze at winter.

Polar region receive less intensive solar ration because the sun's energy arrives at an oblique angle, spreading over a larger area, and also travels a longer distance through the Earth's atmosphere in which it may be absorbed, scattered or reflected, which is the same thing that causes winters to be colder than the rest of the year in temperate areas.

Near the North and South Poles it is so cold that when the snowfalls is does not melt, but gradually accumulates over hundreds and thousands of years to make thick ice sheers. The ice sheets in the southern Hemisphere are much larger than in the northern hemisphere, covering the entire continent of Antarctic. In the north by contract, ice sheets are restricted mainly to Greenland. Most of the arctic circle surrounding the North Pole is ocean, and the seawater freezes to from sea ice, rarely more than a few tens of metes thick.    The cold polar climates can experiment low temperature indeed. This is because for half the year, the sun does not rise above the horizon. A temperature of -88 °C  was once reported in Antarctica. Since the air in polar region is so cold, it contains very little moisture. Such dry air means that there is very little snowfall. Polar climates can be as dry as the hot deserts.
 * Picture of Polar

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http://en.wikipedia.org/wiki/Polar_region http://www.physorg.com/news96641929.html http://arctic.atmos.uiuc.edu/ http://www.blueplanetbiomes.org/climate.htm http://www.hko.gov.hk/aviat/outreach/AMIDS/POLAR_TEMP.htm
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