Advection is the transport of an atmospheric characteristic by the wind. In the meteorology it is usually used to describe the transportation of air masses (horizontal movement). Through the movement of air, energy in form of heat, but also aerosoles, water vapor, etc. is transported. The moving of air masses with different temperatures generally occurs in a horizontal direction, other than the convection, which is vertical. The advection that happens in the atmospheric physics is the cause for cold and warm periods in the weather.