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Meteorology  Conceptual model  Condensation Funnel

the physical process by which a vapor becomes a liquid or solid; the opposite of evaporation; in meteorological usage, this term is applied only to transformation from vapor to liquid; any process in which a solid forms directly from its vapor is termed sublimation, ...

Condensation - The process by which a gas or vapor changes to a liquid.
Condensation nuclei - Tiny particles invisble to the human eye, such as dust, dirt, and pollutants, that provide surfaces on which water molecules can condense and gather into water droplets.

The transformation of water from a gas into a liquid, and the processes that lead to condensation.
The movement of water through the atmosphere.

CONDENSATION PRESSURE DEFICIT (COND PRES DEF)- On an isentropic chart (a layer of constant potential temperature), condensation pressure deficit represents the amount of lift, expressed in millibars, needed to saturate an air parcel.

The process by which water vapor undergoes a change in state from a gas to a liquid.
Convection ...

Condensation - The process by which water vapour becomes a liquid. Conduction - The transfer of heat by molecular activity from one substance to another, or through a substance. Transfer is always from warmer to colder regions.

Condensation - The change of state from vapor to liquid. The process releases latent heat.
Conditional instability - A type of atmospheric instability where the air is stable if it is dry, and unstable if it is saturated.

CONDENSATION: The process of gas changing to liquid.
CONTINENTAL AIR MASS: A dry air mass originating over a large land area.

The change of water vapor into a liquid. In order to condense water vapor, the air must be at or near saturation in the presence of condensation nuclei.
The transfer of heat from one molecule to another or from one substance to another.

condensation: when a vapor becomes a liquid due to some change. Occurs often when the temperature becomes cooler, the humidity becomes greater, or the air pressure changes.

Condensation Process by which water changes phase from a vapor to a liquid.
Condensation nuclei Small particles in the atmosphere that serve as the core of tiny condensing cloud droplets. These may be dust, salt, or other material.

Condensation- the occurrence of vapor transforming into a liquid.
Conduction- the transfer of heat between bodies that are in contact.
Convection- the transfer of heat within a gas or liquid by their movement.

Condensation - The physical process by which water vapor in the atmosphere changes to liquid in the form of dew, fog or cloud; the opposite of evaporation.
CONUS - Continental United States ...

Condensation Funnel - A funnel-shaped cloud associated with rotation and consisting of condensed water droplets (as opposed to smoke, dust, debris, etc.). Compare with debris cloud.

Condensation Nuclei: Liquid or solid particles, such as those in smoke or dust, that provide a surface upon which water vapour can condense into cloud droplets or form ice crystals.

The physical process by which water vapor is transformed into dew, fog, or cloud droplets.
Continental Air
Mass of air which remains over a continent for several days and which, therefore, has a fairly low moisture content.

Condensation The process by which water vapor becomes a liquid.
Conditional stability Property of an ambient air layer that is stable for unsaturated (clear) air parcels and unstable for saturated (cloudy) air parcels.

Condensation level The level above the surface marking the base of a cumuliform cloud.
Condensation nuclei Tiny particles upon whose surfaces condensation of water vapor begins in the atmosphere.

condensation—The change of water vapor to liquid water.
evaporation—The change of liquid water to water vapor.
freezing—The change of liquid water to ice.

Condensation The process by which a gas or vapor changes into a liquid.
Condensation Funnel A funnel-shaped cloud associated with rotation and consisting of condensed water droplets (as opposed to smoke, dust, debris, etc.). Compare with debris cloud.

In general, the physical process by which a vapor becomes a liquid or solid; the opposite of evaporation, although on the molecular scale, both processes are always occurring.
Condensation Funnel ...

Condensation Change of a substance to a denser form, such as gas to a liquid. The opposite of evaporation.
Conduction The transfer of heat from one substance to another by direct contact. Denser substances are better conductors; the transfer is always from warmer to colder substances.

Lifting Condensation Level (LCL): It is the height at which a parcel of air becomes saturated when lifted dry-adiabatically.
Lightning: A sudden visible flash of energy and light caused by an electrical discharges from thunderstorms.

Water vapor will only condense onto another surface when that surface is cooler than the temperature of the water vapor, or when the water vapor equilibrium in air has been exceeded. When water vapor condenses onto a surface, a net warming occurs on that surface.

Condensation: Process of transformation of water vapor into liquid water.
Continuous Precipitation: Term applied to precipitation caused by stratiform clouds which persists for one hour or longer.
Convection: Transfer process due to the movement of air vertically.

condensation- formation of liquid water from vapor, either around a small particle or on a solid surface. See dew point, evaporation.

Condensation- The change of vapor to liquid.
Condensation Nuclei- Small particles in the air around which water vapor condenses.
Conduction- The transfer of heat by molecular action within a substance or when two substances are in direct contact.

Condensation - The change of water vapor to liquid water, as when fog or dew forms.
Contrails - Long, narrow, ice-crystal clouds that form behind jet planes flying at high altitudes in below-freezing temperatures. They result from the condensation of water vapor remaining in jet exhaust.

CONDENSATION - A change of state of water from a gas (water vapor) to a liquid.

CONDENSATION FUNNEL - The visible pendant cloud of a tornado. This is caused by air pressure and wind speed changes associated with vortex allowing the vapor in the air to condense into water droplets. This region does not have to touch the ground to have a tornado.

A funnel-shaped cloud consisting of condensed water drops that has possible rotation.
A particle upon which condensation of water vapor occurs. It may be either in a solid or liquid state.

A condensation funnel extending from the base of a towering cumulus or Cb, associated with a rotating column of air that is not in contact with the ground (and hence different from a tornado). A condensation funnel is a tornado, not a funnel cloud, if either ...

(2) Condensation releases heat and the further lifted air will cool somewhat slower now, lets say at a typical rate between 0.5 and 0.65C/100m. This is called the wet or saturated adiabatic lapse rate.

Lifting Condensation Level - the level at which a parcel of moist air becomes saturated when it is lifted dry adiabatically.LDSLightning Detection SystemLDTLocal Daylight Time.LeaderThe streamer which initiates the first phase of each stroke of a lightning discharge.

Cloud Condensation NucleiSmall particles in the air on which water vapor condenses and forms cloud droplets.Cloud LayerAn array of clouds whose bases are at approximately the same level.

cloud condensation nucleusA particle, either liquid or solid, upon which water condenses to form cloud droplets.cloud coverThe amount of the sky obscured by clouds when observed at a particular location.cloud deckThe top of a cloud layer, usually viewed from an aircraft.

Condensation The process by which a vapor becomes a liquid. In meteorology, it occurs when water vapor changes to dew, fog, or becomes a cloud. Condensation nucleus Small particle on which water vapor condenses. Conformal coating A protective coating applied to circuits.

The physical process through which water vapour becomes a liquid
Consolidated Ice
Sea-ice terminology, meaning floating ice in which the concentration is 10/10, and the floes are frozen together.
Consolidated Ridge ...

CondensationThe process by which water vapor becomes a liquid; the opposite of evaporation, which is the conversion of liquid to vapor. In Australia, it is described as a change from a gas to a liquid.

See blowing spray as a factor in visibility at sea and as a possible condensation nuclei. SEA SURFACE TEMPERATURE (SST) The temperature of the water's surface. It is measured using buoy and ship data, infrared satellite imagery, and coastal observations.

Xenia, OH on 3 April 1974, which was rated F5 but appeared only as a series of suction vortices without a central condensation funnel).

accumulation (glacial) All processes, which include snowfall, condensation, avalanching, snow transport by wind, and freezing of liquid water, that add snow or ice to a glacier, floating ice, or snow cover.

The heating occurs due to the release of the latent heat of condensation, caused by the above-normal upward movement of water vapor into the upper atmosphere.

Visibility reduction in fog depends on concentration of cloud condensation nuclei and the resulting distribution of droplet sizes.

[Slang], a large tornado with a condensation funnel that is at least as wide (horizontally) at the ground as it is tall (vertically) from the ground to cloud base. The term "wedge" often is used somewhat loosely to describe any large tornado. However, not every large tornado is a wedge.

As warm air rises it may cool and reach the saturation point where condensation occurs. This process releases energy to the atmosphere (at the rate of 585 calories per gram of water).

A rotating "cloud" of dust or debris, near or on the ground, often appearing beneath a condensation funnel and surrounding the base of a tornado. This term is similar to dust whirl, although the latter typically refers to a circulation which contains dust but not necessarily any debris.

cloud formation: cloud-condensation nuclei, cloud droplets
For condensation to occur at the dew point water vapor needs a surface to condense on. In the atmosphere water vapor starts to condense on microscopic particles suspended in the air: dust, soot, volcanic ash, salt spray, etc.

However, it will be obvious from the description (above) relating to condensation trails, that the heat outflow must markedly outweigh the injection of water vapour from the spent fuel, and the phenomenon is rare.

1650: Ferdinand II, the Grand Duke of Tuscany, invented the condensation hygrometer.
1769: German Lambert made a hygrometer.
1783: Swiss H.B. Saussure invented the hair hygrometer.
1799: French Leslie first measured the humidity using a differential thermometer with a dry-bulb and a wet-bulb.

Funnel Cloud - A condensation funnel extending from the base of a towering cumulus or Cb, ...

Any substance that has an affinity for water, thereby enhancing condensation of water vapor. Cloud condensation nuclei are typically hygroscopic, consisting of salts that produce aqueous solutions that have equilbrium vapor pressures less than those for pure water at the same temperature.

It is the condensation trail of ice crystals left behind by the exhaust of a flying jet aircraft. These aircraft fly 8 to 12 kilometres above the ground pulling in very cold, dry air and spewing out hot, water-filled exhaust.

A visible collection of minute particle matter, such as water droplets and/or ice crystals, in the air. A cloud forms in the atmosphere as a result of condensation of water vapour. Condensation nuclei, such as smoke or dust particles, form a surface upon which water vapour can condense.

Heat is added to the air through condensation of water vapour (latent heat) thus reducing the rate at which the air cools. When the air descends on the other side it has lost some of its moisture (because rain and/or snow has fallen from it) and it is warmed by compression as it descends.

Latent heat - heat given off by condensation, or absorbed by evaporation, of water.
Lightning - a giant electrical spark jumping between clouds or between a cloud and the ground.

Evaporation The physical process by which a liquid or solid substance is transformed to a gas; the opposite of condensation.
Fog Saturated air with visibility below one kilometre. Fog differs from cloud only in that the base of fog is at the Earth's surface while clouds are above the surface.

The term implies both poleward displacement of the cyclone and the conversion of the cyclone's primary energy source from the release of latent heat of condensation to baroclinic (the temperature contrast between warm and cold air masses) processes.

evaporation: the process by which an element changes phase from a liquid to a gas; the opposite of condensation.

Aerosols may influence climate in two ways: directly through scattering and absorbing radiation, and indirectly through acting as condensation nuclei for cloud formation or modifying the optical properties and lifetime of clouds (from the always useful IPCC glossary).

Hurricanes are driven by the heat released by condensation of water vapour, and depend on a warm ocean surface to give them lots of water vapor. The central eye is a descending column (unlike the centre of a tornado), the whole thing like a toroidal vortex.

See also: See also: Cloud, Water, Air, Surface, Temperature

Meteorology  Conceptual model  Condensation Funnel

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