The Easterly Trade Winds and the Polar Easterlies have nothing over which to prevail, as their parent circulation cells are strong enough, and face few obstacles either in the form of massive terrain features or high pressure zones. The weaker Westerlies of the Ferrell cell, however, can be disrupted.
The Trade winds are the wind that are generated in the Hadley cells. This wind occurs in the tropical region of both the hemisphere, covering from 0° to 30° latitude in both the hemisphere. This wind originates from the northeastern direction and blows towards the equator in the northern hemisphere, and on the other, this wind again blows from the southeastern direction and blows towards the equator in the southern hemisphere.They are also commonly known as the easterlies, as they move from the eastern to the western direction.
