advection

noun

1. Meteorology. the horizontal transport of atmospheric properties (distinguished from convection).
2. the horizontal flow of air, water, etc.

noun

1. the transference of heat energy in a horizontal stream of gas, esp of air

1. The transfer of a property of the atmosphere, such as heat, cold, or humidity, by the horizontal movement of an air mass.
2. The rate of change of an atmospheric property caused by the horizontal movement of air.
3. The horizontal movement of water, as in an ocean current.