Desert climate

Arid climate subtype

The desert climate or arid climate (in the Köppen climate classification BWh and BWk) is a dry climate sub-type in which there is a severe excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert climates are dry and hold little moisture, quickly evaporating the already little rainfall they receive. The BWh (hot desert) climate is the most extensive Köppen climate type, covering approximately 14.2% of Earth's land area.

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