The air moves towards the equatorial low-pressure zone, and warms up when it meets the land or ocean. At around 60° this warmed air rises. This is another thermally direct cell.

Atmospheric circulation is the large-scale movement of air and together with ocean circulation is the ... The smaller scale weather systems – mid-latitude depressions, or tropical convective cells – ...

As warm air rises and cold air sinks it forms three atmospheric circulation cells north of the equator and three to the south. These circulation cells move over land and sea to redistribute the ...