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It's really not that different from the rest of the world, since it still has an entire atmosphere of air weighing down on it which is what air pressure is. If Antarctica were at sea level it would tend to be slightly higher due to high pressure prevailing (climatologically at the poles). But since much of Antarctica is up pretty high in elevation (several thousand meters) just due to there being so much ice on top of the land, the actual air pressure is pretty low - on par with that of a location in the mountains.

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15y ago

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