In terms of sea ice, the Arctic tends to get thicker, more expansive and longer lasting sea ice than Antarctica. Because Antarctica is a landmass surrounded by water, there is less ice because the peripheral ocean is not as cold as directly over the pole. The Arctic on the other hand is nothing but ocean; at the pole there is usually a patch of ice with an average size of roughly 7 million square kilometers, though in the winter, this patch grows to more than 15 million square kilometers.
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