From Glossary of Meteorology
Revision as of 17:07, 25 April 2012 by
An area of very little rainfall and high temperature that occurs where the trade winds or their equivalent (such as the harmattan) blow over land.
The best examples are the Sahara and Kalahari deserts. The trade winds, blowing from higher latitudes, are very drying, and cloudiness is almost absent in these desert regions.