What is convection?

  • (noun): (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere.
    See also — Additional definitions below


Convection is the concerted, collective movement of ensembles of molecules within fluids (e.g., liquids, gases) and rheids. Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but is referred to separately in that case as heat conduction. A good model for convection is when you take a heat source (e.g. Bunsen burner) and place it at any side of a glass full of a liquid, you then can feel the different levels of heat in the glass.

Read more about Convection.

Some articles on convection:

Atmospheric Convection
... Atmospheric convection is the result of a parcel-environment instability, or temperature difference, layer in the atmosphere ... Moist convection leads to thunderstorm development, which is often responsible for severe weather throughout the world ...
Tropical Depression Five-E (2008) - Meteorological History
... formed out of a weak tropical wave, associated with scattered convection, which formed off the coast of Africa on June 23 ... Some cyclonic turning was noted and convection was on either side of the axis— the center of the storm—but was mainly in association with the Intertropical Convergence Zone (ITCZ) ... On July 2, the wave moved over Central America and produced scattered areas of strong convection off the coast of Honduras ...
Mathematical Models of Convection - Quantifying Natural Versus Forced Convection
... In cases of mixed convection (natural and forced occurring together) one would often like to know how much of the convection is due to external constraints, such as the fluid velocity in ... of the Grashof and Reynolds number squared determine which form of convection dominates ... if forced convection may be neglected, whereas if natural convection may be neglected ...
Meteorological History Of Hurricane Jeanne - Second Landfall and Reorganization
... eye feature and well-defined inner core of convection ... Jeanne quickly weakened to tropical storm status, and by 24 hours after landfall its convection had deteriorated as the eye feature dissipated ... as a tropical depression, the original center of circulation tracked westward away from the convection and dissipated ...
Convection–diffusion Equation
... The convection–diffusion equation is a combination of the diffusion and convection (advection) equations, and describes physical phenomena where particles ...

More definitions of "convection":

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