Hadley Cells are the low-latitude overturning circulations that have air rising at the equator and air sinking at roughly 30° latitude. Second, the air moving toward the poles in the upper atmosphere conserves its axial angular momentum, while the surface air moving equatorwards is slowed down by friction.
Also asked, why do the polar regions have high pressure?
The cold temperatures in the polar regions cause air to descend to create the high pressure (a process called subsidence), just as the warm temperatures around the equator cause air to rise to create the low pressure intertropical convergence zone.
What is the pressure at 30 degrees north and south and what type of climate is there?
This tropical rain belt runs along the equator and spreads out to about the Tropic of Cancer (23.5 north latitude) and Tropic of Capricorn (23.5 south latitude). But by the time it reaches about 30 degrees north and south latitude, it's cool enough to sink back to the surface.
What is the subtropical high pressure belt?
The subtropical ridge, also known as the subtropical high or horse latitudes, is a significant belt of atmospheric high pressure situated around the latitudes of 30°N in the Northern Hemisphere and 30°S in the Southern Hemisphere.