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Global Wind Patterns
wind belts of the general circulation
The global wind pattern is also known as the
"general circulation" and the
surface winds of each hemisphere are divided into three wind belts:
[Image: average global wind pattern (45K)]
- Polar Easterlies: From 60-90 degrees latitude.
- Prevailing Westerlies: From 30-60 degrees latitude (aka Westerlies).
- Tropical Easterlies: From 0-30 degrees latitude (aka Trade Winds).
The easterly trade winds of both hemispheres
at an area near the equator called the
"Intertropical Convergence Zone (ITCZ)",
producing a narrow band of clouds and thunderstorms
that encircle portions of the globe.