pressure zone near the equator. As the air moves poleward, it cools, becomes denser, and descends at about the 30th parallel, creating a high-pressure area. The descended air then travels toward the equator along the surface, replacing the air that rose from the equatorial zone, closing the loop of the Hadley cell.

The poleward movement of the air in the upper part of the troposphere deviates toward the east, caused by the coriolis acceleration.