Atmospheric circulation refers to the large-scale movement of air in the Earth's atmosphere, driven by differences in temperature and pressure. This circulation is responsible for transporting heat from the equator towards the poles, as well as distributing weather patterns around the globe. The main components of atmospheric circulation are trade winds, westerlies, and polar easterly winds, which move air masses in specific directions based on temperature differences between the tropics and the poles. These large-scale movements of air play a crucial role in regulating our planet's climate by redistributing heat from areas of excess to those in need.