Question

explain how and why air from the sub tropical high pressure system converges at the equator

Answer 1

Answer:

When this subtropical air reaches the equator, it rises into the upper atmosphere because of convergence and convection. ... To compensate for this accumulation, some of the air in the upper atmosphere sinks back to the surface creating the subtropical high pressure zone.

Answer 2

Answer:

When this subtropical air reaches the equator, it rises into the upper atmosphere because of convergence and convection. ... To compensate for this accumulation, some of the air in the upper atmosphere sinks back to the surface creating the subtropical high pressure zone.

Explanation:

Over the long haul, the clear signal from the recurrent upward motion in the ascending branch of each Hadley Cell is a stream of air flowing poleward at high altitudes. As the air flows poleward it cools. ... Air must converge as it moves poleward from the equator, creating upper-level convergence.