What is the wind system?
A wind system is simply the displacement of air, mostly due to the fact that atmospheric pressures tend to even out by displacing air from a high to a low pressure. Furthermore, warm air rises, because less dense, and cold air sinks. The rising air is called a convection. The sinking air is called a subsidence and the air moving parallel to the ground is called a advection. The equator is hot and lighter air rises here. The poles are cold and colder air sinks there. If it wasn’t for the earth’s rotation and the resulting Coriolis force, perhaps that the warm air rising at the equator would sink at the poles, giving, at the surface, winds blowing from the poles toward the equator. Try to put a large pot of water on the oven and see how the warm water rises in the middle, to reach the surface, move to the edges and sink there, looping the loop. It is nearly the same in our atmosphere. Nearly, because the Coriolis effect bends any fluid displacement in the northern hemisphere to the right
