By Eric.Keenan

 Antarctica is the coldest continent on Earth, therefore it comes as no surprise that most precipitation falls as snow and that the continent is blanketed in glaciers up to 4.5 kilometers thick. In fact, so much snow and ice is trapped in Antarctica that if it were to all melt, global sea-level would rise about 60meters.

For the ice sheet to maintain its equilibrium, and not contribute to sea-level rise, snowfall must balance processes that remove snow and ice from Antarctica, including iceberg calving, surface sublimation, and runoff from meltwater.

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