Advection vs. Convection — What's the Difference?

In the field of physics, engineering, and earth sciences, advection is the transport of a substance or quantity by bulk motion of a fluid. The properties of that substance are carried with it.

Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy). When the cause of the convection is unspecified, convection due to the effects of thermal expansion and buoyancy can be assumed.

The transfer of a property of the atmosphere, such as heat, cold, or humidity, by the horizontal movement of an air mass

The act or process of conveying; transmission.

The rate of change of an atmospheric property caused by the horizontal movement of air.

Heat transfer in a gas or liquid by the circulation of currents from one region to another.

The horizontal movement of water, as in an ocean current.

Fluid motion caused by an external force such as gravity.

The horizontal movement of a body of atmosphere (or other fluid) along with a concurrent transport of its temperature, humidity etc.

(Meteorology)The transfer of heat or other atmospheric properties by massive motion within the atmosphere, especially by such motion directed upward.

(physics) The transport of a scalar by bulk fluid motion.

(obsolete) The process of conveying something.

(meteorology) the horizontal transfer of heat or other atmospheric properties

(physics) The transmission of heat in a fluid by the circulation of currents.

(meteorology) The vertical movement of heat and moisture, especially by updrafts and downdrafts in an unstable air mass. The terms convection and thunderstorm are often used interchangeably, although thunderstorms are only one form of convection. Towering cumulus clouds are visible forms of convection.

The act or process of conveying or transmitting.

A process of transfer or transmission, as of heat or electricity, by means of currents in liquids or gases, resulting from changes of temperature and other causes.

The transfer of heat through a fluid (liquid or gas) caused by molecular motion

(meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere