When precipitation falls in hot deserts,it quickly evaporates back into the atmosphere.The air over Antarctica is too cold to hold water vapor, so there is very little evaporation.Due to this low rate of evaporation, most of the snow that falls to the ground remains there permanently,eventually building up into thick ice sheets. Any snow that does not freeze into ice sheets becomes caught up in the strong winds that constantly blow over Antarctica.These snow-filled winds can make it look as if it is snowing.Even though snowfall is very rare there,blizzards are actually very common on Antarctica.