What is the world's biggest and driest desert biome?

Answer 1

All deserts are dry, since a desert is defined as an area receiving less than 250 mm or 10 inches of precipitation per year. The world's largest desert is Antarctica. The Antarctic desert covers 13.9 million square kilometres, or almost 5.5 million square miles.

However, when most people think of deserts the implied thought is that they are sand based not ice based. It is also not known as the Antarctica Desert because it is not referred to as such in the text books.

The Sahara is the largest hot desert. It is in northern Africa and occupies over a quarter of Africa, covering 9.1 million square kilometres, or 3.5 million square miles. It is generally more recognised as a desert because its rate of evaporation exceeds the rate of precipitation, whereas the Antarctic has a very low evaporation rate.

Answer 2

The most air of the world´s deserts is the Atacama Desert in Northern Chile.

Answer 3

Antarctica is the largest desert biome in the world. As is characteristic of any desert, there is very little precipitation on the continent.

Answer 4

The Antarctic Desert is the largest and driest desert region on earth. Some argue that the Atacama Desert of South America is even drier.