advection fog

advection fog
A type of fog that results from air being cooled following its horizontal movement. This could result from either cold air passing across a warmer sea or water surface while mixing with warm air prevailing there, or the air becoming chilled by coming into contact and mixing with cold air associated with a cold surface.
Cold air is heated up when it comes into contact with warm ground. Heat is transferred from warm water to the cold air by advection.

Aviation dictionary. 2014.

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  • advection fog — Meteorol. fog caused by the movement of warm, moist air over a cold surface. [1940 45] * * * advection fog, a fog that occurs when a body of relatively warm, moist air moves over a cold surface: »Advection fogs often form in the Newfoundland… …   Useful english dictionary

  • advection fog — /ədˈvɛkʃən fɒg/ (say uhd vekshuhn fog) noun Meteorology a fog formed when a mass of warm moist air moves laterally over a colder ground surface and is cooled to below its dewpoint …  

  • advection fog — Meteorol. fog caused by the movement of warm, moist air over a cold surface. [1940 45] * * * …   Universalium

  • advection fog — noun A type of fog caused by the passage of moist air horizontally over a relatively colder surface and the consequent cooling of that air to below its dew point. See Also: advectional …   Wiktionary

  • fog — fog1 fogless, adj. /fog, fawg/, n., v., fogged, fogging. n. 1. a cloudlike mass or layer of minute water droplets or ice crystals near the surface of the earth, appreciably reducing visibility. Cf. ice fog, mist, smog. 2. any darkened state of… …   Universalium

  • Fog — For other uses, see Fog (disambiguation). Part of the Nature series on Weather   Calendar seasons Spring  …   Wikipedia

  • fog —   ground level condensation caused if the dew point is reached in this part of the atmosphere by advection, evaporation, radiation or at a warm front or over ice. Typically, the density of the water droplets needs to be such that visibility is… …   Geography glossary

  • San Francisco fog generation — The famous fog of San Francisco, California is a specific case of sea fog. Sea fog is a specific type of advection fog, which is characterized by the lateral transfer of temperature by wind blowing over cooler water. The water is often cool… …   Wikipedia

  • Moisture advection — is the horizontal transport of water vapor by the wind. Measurement and knowledge of atmospheric water vapor, or moisture , is crucial in the prediction of all weather elements, especially clouds, fog, temperature, humidity thermal comfort… …   Wikipedia

  • Haar (fog) — Haar in meteorology is a coastal fog along certain lands bordering the North Sea; the term is primarily applied in eastern Scotland. [ [ Scots Dictionary] ] Research has shown that haar is… …   Wikipedia

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