polar cap

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polar cap

n.
Either of the regions around a planet's poles that are permanently covered with ice or other frozen material. Also called polar ice cap.

polar cap

1. The mass of permanent ice that covers either of the Earth's polar regions.
2. The mass of frozen carbon dioxide and water that covers either of Mars's polar regions.
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Meanwhile, parts of the planet are literally burning up and the polar caps are melting.
It was widely assumed at the time that some of the dark features were seas and lakes while the polar caps were composed of water ice, and the planet's atmosphere was far denser and more Earthlike than in actuality.
Yearly comparisons of the Martian polar caps: 1999-2003 Mars Orbiter Camera observations.
Most recently, on May 12, Hubble's Wide Field Camera 3 (http://www.ibtimes.com/mars-russet-surface-polar-ice-caps-captured-stunning-new-hubble-photograph-2371745) captured the surface of Mars in stunning detail, revealing russet deserts pockmarked with craters and bright frosty polar caps shrouded in a thin haze of clouds.
Mars must have lost a volume of water 6.5 times larger than the present polar caps to provide such a high level of enrichment.
As the melting of polar caps opens trade routes and new technologies emerge, decisions on if, and by whom, these resources should be accessed need to be made quickly.
Inside there was a compelling feature that said according to experts, there is little chance of another Titanic disaster ever occurring as there are fewer icebergs due to the polar caps melting at such an alarming rate.
With lows of about -225[degrees] F (at the winter polar caps) and highs of up to 95[degrees]F (in equatorial summer).
The effects of global warming go beyond melting polar caps and glaciers and the resulting rise in sea levels and the inundation of hundreds of worldwide oceanfront cities.
"During these times, ice from the polar caps is redistributed into the mid-latitudes of Mars as a layer about 50 meters thick, in the same place that we see that the DLEs have formed.
Nations are negotiating emissions rates that exceed the 2-degree rise, promising melting polar caps and other devastating consequences.