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As warm, moist air rises along the equator, surface air moves in to take its place, creating trade winds.
often trade winds Any of a consistent system of prevailing winds occupying most of the tropics, constituting the major component of the general circulation of the atmosphere, and blowing northeasterly in the Northern Hemisphere and southeasterly in the Southern Hemisphere.
[From obsolete to blow trade, to blow in a regular course, from trade, regular course (obsolete).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Winds that blow steadily from east to west and toward the equator over most of the Torrid Zone. The trade winds blow from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere, converging on the doldrums. See more at wind.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.