Hadley cell

== English == === Etymology === Named after amateur meteorologist George Hadley. === Noun === Hadley cell (plural Hadley cells) (meteorology) A global-scale tropical atmospheric circulation that features air rising near the Equator, flowing poleward at a height of 10 to 15 kilometers above the earth's surface, descending in the subtropics, and then returning equatorward near the surface. This circulation creates the trade winds, tropical rain-belts and hurricanes, subtropical deserts and the jet streams.