According to the online content article about antarctica and the atacama, why are parts of antarctica considered to be deserts?

Antarctica is so dry that it's considered a desert. Huge ice sheets cover 98% of this frosty continent, Earth's southernmost region. Antarctica is the coldest, iciest, and windiest of Earth's continents. Few plants or animals can live in such a harsh place. But the oceans around the continent are full of life.

tropical storm katrina, and it made landfall between miami and fort lauder-dale, florida, as a category 1 hurricane (a storm that, on the saffir-simpson scale, exhibits winds in the range of 74–95 miles per hour [119–154 km per hour]). sustained winds of 70 miles per hour (115 km per hour) lashed the florida peninsula, and rainfall totals of 5 inches (13 cm) were reported in some areas. the storm spent less than eight hours over land. it quickly intensified when it reached the warm waters of the gulf of mexico.

this should answer you're question