The following video is the first of two that looks at all four of the pressure belts on Earth. It is important to note that as the subsolar point moves and seasons change, so do the four primary areas of high and low pressure.

The image below is used in the preceding video and is here to help you see the image more clearly.
Atmosphere in Motion - Equinoxes

Why is it so green in central Africa? Why so much rain in the Amazon? Why is the Sahara so dry? Why do so many places in the Midlatitudes have seasonal changes in air pressure? Take a look at the following two videos to help answer these questions.

This next video looks at a global map as we begin to actually see stuff on a map that relates to what we are discussing.

The following video does a good job of showing the movement of the subsolar point and subsequently movement of the ITCZ and Hadley Cell. The map shows on the top vegetation (green = more vegetation) and precipitation is on the bottom (more rain = blue color). Note that when the subsolar point moves over an area of Africa, the ITCZ and that dense rain belt follows. Vegetation likes precipitation, thus the "greening" of Africa is noticed in the vegetation map as the rainy season arrives.