Atacama Desert

The Atacama Desert is a desert. It is on the Tropic of Capricorn in northern Chile and is one of the driest places on earth. In some places, less than an inch (25mm) of rain falls every ten years. Only one of the rivers from the Andes mountains reaches the ocean through the desert. The rest disappears into the dry soil. 

The Atacama is a desert, because mountains to the East, and the ocean to the West, make a rain shadow, and this desert also lies underneath clear skies away from the coast more inland, most of the time as well. The water on the coast of Chile is cold, because the Humboldt Current brings cold water from Antarctica. Moisture cannot stay in the cold air above the cold water, so mainly fog reaches the land, but very little rain. The people of Chile have learned how to get water from the fog to help them live. They "harvest" the clouds by putting up plastic sheets with pans underneath. The fog collects on the plastic and drips into the pans, giving the people water for crops and drinking. In parts of this desert it has not rained for over 400 years. Even though the Atacama is the driest place in the world that does not mean it is the hottest. The Atacama Desert is actually a mild place with temperatures ranging from 0 to 30 degrees Celsius.

Three countries fought the War of the Pacific in the 1880s for control of the desert. They both wanted its Sodium nitrate mines. Chile won.

The oldest known artificially prepared mummies come from this desert.  They are called the Chinchorro mummies. Kraul, Chris, 2015, "Mystery of Melting Mummies," Chicago Tribune May 17, p. 29.

 References 

Category:Deserts
Category:Atacama Region
Category:Ecoregions