Prevailing winds are the planetary winds that are caused by the formation of giant convection cells over the earth. Prevailing winds blow from the hot regions of the earth, like the tropics, to the cold areas of the earth, like the temperate or polar regions, and from the cold areas back to the hotter regions.
Winds occur where high-pressure air masses seek low-pressure areas. Prevailing winds are largely predictable and named for broad areas of the Earth over which they form. Convection cells circulate air flow and help regulate temperature around the globe.
