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.

Circulation issues can be visible if they affect the legs or feet. Symptoms may be invisible but cause internal sensations.

Atmospheric ... circulation and have agreed on a simplified model to explain the redistribution of energy from areas of surplus to areas of deficit. This is called the three cell model and can ...