Convection atmospheric motions in the vertical direction
In meteorology, convection refers primarily to atmospheric motions in the vertical direction.
Convection cloud Cumuliform cloud which forms in the atmosphere as a result of convection. Such clouds are also called clouds of vertical development.
Convection cells can form in any fluid, including the Earth's atmosphere, boiling water or soup (where the cells can be identified by particles they transport, such as grains of rice), the ocean, the surface of the sun, or even a farmer's field, ...
Convection is the process generally associated with warm rising air, and the formation of cloud. Local breezes, wind and thunderstorms are a result of convection in the atmosphere.
convection"1. In general, mass motions within a fluid resulting in transport and mixing of the properties of that fluid. Convection, along with conduction and radiation, is a principal means of energy transfer.
Convection - Generally, transport of heat and moisture by the movement of a fluid. In meteorology, the term is used specifically to describe vertical transport of heat and moisture, especially by updrafts and downdrafts in an unstable atmosphere.
Convection - transfer of energy and mass by motions in a liquid or gas. In the atmosphere, convection usually refers to the vertical interchange of air masses.
Convection - Transfer of heat by fluid motion between two areas with different temperatures. In meteorology, the rising and descending air motion caused by heat.
convection:the process in which cool air delves down, while warmer air rises to the top. The warm air usually cools in the cooler, higher sections of the atmosphere and again begins to return back down.
Convection: The transfer of energy by the movements of masses in a liquid or a gas. In meteorology, convection infers vertical movement or upward motions due to differential heating.
Convective clouds: A cloud that results from convection.
Convection - A transfer of heat within a fluid by fluid motions. Meteorologists refer to vertical motions as convective. Horizontal motions are advective.
Convection Motions in a fluid that result in the transport and mixing of the fluid's properties. In meteorology, convection usually refers to atmospheric motions that are predominantly vertical, such as rising air currents due to surface heating.
convection: vertical energy transfer in the atmosphere.
cooling degree day: a measurement used to determine how much fuel will be needed to cool indoor environments.
Convection: In physics, convection is the transport and mixing of properties (energy, heat, moisture, etc.) of a fluid by mass motion of that fluid.
Convection- the transfer of heat within a gas or liquid by their movement.
Corona- a disk of light surrounding the sun or moon; this is a result of the diffraction of light by small water droplets.
Convection - Air moving up and down in a quasi-circular flow, called a cell.
Convection - in general, the transport and mixing of the properties of a fluid (e.g., heat, moisture, etc.) by means of mass motion within the fluid; in meteorology, atmospheric motions generally are divided into those in the horizontal, ...
CONVECTION (CNVTN) - the transfer of heat within a gas or liquid by their movement.
Convection Cell - Circulation that results from the uneven heating of a fluid; the warmer parts of the fluid expand and rise because of their buoyancy and the cooler parts sink.
Convection Vertical air circulation in which cool air sinks and forces warm air to rise.
CONVECTION Motions in a fluid that transport and mix the properties of the fluid. These properties could be heat and/or moisture. When used to imply only upward vertical motion, it is then the opposite of subsidence.
Convection The rising of warm air and the sinking of cool air. Heat mixes and moves air. When a layer of air receives enough heat from the Earth's surface, it expands and moves upward.
dry convection - A vertical exchange of air without precipitation at the ground.
Free convection
Motion caused only by density differences in a fluid. See also Level of Free Convection
Freeze ...
CNVTN- Convection
COLD CORE HIGH- A dome of cold surface high pressure that originates from the high latitudes. ...
Popcorn convection
[Slang] Showers and thunderstorms that form on a scattered basis with little or no apparent organization, usually during the afternoon in response to diurnal heating.
Convection
Describes the vertical air motion that occur when the atmosphere is unstable. Convection often gives rise to the formation of convective cloud (Cumulus, Towering Cumulus and Thunderclouds) and showery precipitation.
Convergence ...
convection- transfer of heat by movement of air or water; specifically, rise of an air mass caused by warming over land or sea that often causes the formation of clouds.
CONVECTION: An atmospheric motion which is predominately vertical. Warm air rising or cold air sinking or both.
Convection: 1. vertical air circulation in which warm air rises and cool air sinks, resulting in vertical transport and mixing of atmospheric properties. 2. flow of heat by this circulation.
Convection- The transfer of by movement of the heated material. In meteorology, it is often used to indicate the vertical movement of warm air (as opposed to advection, the horizontal movement).
CONVECTION - A vertical circulation of air which results from warm air rising, cooling and then descending.
COORDINATED TURN - A turn in which slip or skid does not occur.
Convection
The transfer and mixing of heat by movement, normally in the vertical.
Convective Cloud ...
Convection occurring within a surface-based layer, i.e., a layer in which the lowest portion is based at or very near the earth's surface. Compare with elevated convection.
SWEAT Index ...
CONVECTION - Air rising and falling in the atmosphere due to density changes from heating or cooling. The term more commonly used to signify rising air.
Elevated Convection: A thunderstorm which occurs above a frontal inversion on the cold side of the surface cold front.
(Various datums may be used and various pool height may be used, e.g., conservation pool, flood control pool, etc.) POPProbability of PrecipitationPopcorn ConvectionSlang for showers and thunderstorms that form on a scattered basis with ...
The amount of energy available to create convection, with higher values increasing the possibility for severe weather. CAPE VERDE ISLANDS A group of volcanic islands in the eastern Atlantic Ocean off the coast of West Africa.
A measure of the amount of energy needed in order to initiate convection. Values of CIN typically reflect the strength of the cap.
Tropical CycloneA warm-core, non-frontal synoptic-scale cyclone, originating over tropical or subtropical waters with organized deep convection and a closed surface wind circulation about a well-defined center.
FirebrandAny source of heat, natural or man made, capable of igniting wildland fuels; flaming or glowing fuel particles that can be carried naturally by wind, convection currents, or gravity into unburned fuels.
Abbreviation for Anticipated Convection; the term originates from the header coding [ACUS1] of the transmitted product.
These properties are interconnected by the various physical processes such as precipitation, evaporation, infrared radiation, convection, advection, and turbulence.
LFC: Level Of Free Convection.
LLWS: Low Level Wind Shear.
LLGT, LTNG: Lightning.
LGTCC: Lightning Cloud To Cloud.
LGTCCCG: Lightning Cloud To Cloud, Cloud To Ground.
LGTCW: Lightning Cloud To Water.
LGTIC: Lightning In Cloud.
Convection itself causes a wind inwards toward the centre of the storm. Roll clouds, or arches, may form around the periphery of the storm.
Vertical shear (which doesn't have to be throughout the troposphere, but can also be over a very shallow layer) destroys the convection around the centre of the tropical cyclone (the 'eye').
Dry lines are common across inland QLD during the warmer months of the year where convection will occur on the eastern side. An important factor in severe weather frequency in the Great Plains (US).
cumulonimbus (thunderhead) forms by vertical growth (upward convection) of cumulus cloud
strong upward convection carries growing cloud droplets to high elevations
(where they may freeze to form hail) ...
A region of negative buoyancy below an existing level of free convection (LFC) where energy must be supplied to the parcel to maintain its ascent.
AIR MASS THUNDERSTORM A thunderstorm that is produced by convection within an unstable air mass through an instability mechanism.
A discrete tropical weather system of apparently organized convection--generally 100 to 300 nmi in diameter -- originating in the tropics or subtropics, having a nonfrontal migratory character, and maintaining its identity for 24 hours or more.
They generally are less likely to be severe than other types of thunderstorms, but they still are capable of producing downbursts, brief heavy rain, and (in extreme cases) hail over 3/4 inch in diameter. See popcorn convection.
CO released in the boundary layer can be used to trace transport in convection. Radioactive tracers such as 14C and 90Sr have been used to test models of stratospheric circulation.
 See also: Air, Surface, Temperature, Cloud, Atmosphere
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