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Visualization of the ice and snow covering Earth's northern and southern polar regions Northern Hemisphere permafrost (permanently frozen ground) in purple. The polar regions, also called the frigid zones or polar zones, of Earth are Earth's polar ice caps, the regions of the planet that surround its geographical poles (the North and South Poles), lying within the polar circles.
Such areas are found around the north and south pole, and on the top of many high mountains. Since the temperature never exceeds the melting point of ice, any snow or ice that accumulates remains there permanently, over time forming a large ice sheet. The ice cap climate is distinct from the tundra climate, or ET. A tundra climate has a summer ...
As such, the climate of much of the Arctic is moderated by the ocean water, which can never have a temperature below −2 °C (28 °F). In winter, this relatively warm water, even though covered by the polar ice pack , keeps the North Pole from being the coldest place in the Northern Hemisphere , and it is also part of the reason that ...
The composition of the ice will vary. For example, Earth's polar caps are mainly water ice, whereas Mars's polar ice caps are a mixture of solid carbon dioxide and water ice. Polar ice caps form because high-latitude regions receive less energy in the form of solar radiation from the Sun than equatorial regions, resulting in lower surface ...
The polar vortex is a large area of cold air and low pressure that normally spins over the North and South Poles. During the winter months and when the jet stream allows, this cold air can drop ...
An arctic front moving in will drop temperatures across parts of the U.S. to dangerously low numbers over the next few days.
At the South Pole, the highest temperature ever recorded was −12.3 °C (9.9 °F) on 25 December 2011. [16] Along the Antarctic Peninsula, temperatures as high as 18.3 °C (64.9 °F) have been recorded, [clarification needed] though the summer temperature is below 0 °C (32 °F) most of the time. Severe low temperatures vary with latitude ...
What we didn't know was just how hot things were getting down at the South Pole. According to research published this week in the journalNature Climate Change, the region has been warming at more ...