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Global winds also occur because large high- and low-pressure zones alternate from the North Pole to the South Pole about every 30° latitude (north-south location).

Both poles have high-pressure air masses (cold, dry, high pressure) and the air above the equator is a low-pressure zone (hot, moist, low pressure).

Because high pressure always invades low pressure, the resulting winds-where the high- and low-pressure zones meet-are pretty reliable.

They are known as the polar easterlies (at 60° latitude north and south); the westerlies or prevailing winds (at 30° latitude north and south); and the tropical easterlies or trade winds (at the equator, 0° latitude).

I hope this helps your question! :)

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13y ago

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