foehn


foehn
/fayn/; Ger. /fuen/, n.
a warm, dry wind descending a mountain, as on the north side of the Alps.
Also, föhn.
[1860-65; < G Föhn (orig. in Alpine dialects), MHG foenne, OHG phonno < VL *faonius, for L Favonius FAVONIUS]

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wind
German  Föhn,  

      warm and dry, gusty wind that periodically descends the leeward slopes of nearly all mountains and mountain ranges. The name was first applied to a wind of this kind that occurs in the Alps, where the phenomenon was first studied.

      A foehn results from the ascent of moist air up the windward slopes; as this air climbs, it expands and cools until it becomes saturated with water vapour, after which it cools more slowly because its moisture is condensing as rain or snow, releasing latent heat. By the time it reaches the peaks and stops climbing, the air is quite dry. The ridges of the mountains are usually obscured by a bank of clouds known as a foehn wall, which marks the upper limit of precipitation on the windward slopes. As the air makes its leeward descent, it is compressed and warms rapidly all the way downslope because there is little water left to evaporate and absorb heat; thus, the air is warmer and drier when it reaches the foot of the leeward slope than when it begins its windward ascent.

      Foehn winds in various parts of the world have local names: chinook in the North American Rockies, ghibli in Libya, and zonda in the Andes of Argentina.

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Universalium. 2010.

Look at other dictionaries:

  • foehn — foehn …   Dictionnaire des rimes

  • foehn — [ føn ] n. m. • foen 1760; mot all., du lat. favonius « zéphyr » 1 ♦ Vent chaud et sec des Alpes suisses et autrichiennes. 2 ♦ Région. (Suisse) Sèche cheveux. foehn n. m. d1./d Vent chaud, en Suisse et au Tyrol, venant du sud. d2./d ( …   Encyclopédie Universelle

  • foehn — FOEHN, (2) foehnuri, s.n. 1. Vânt cald, uscat şi puternic, care bate primăvara dinspre crestele alpine ale munţilor din Elveţia şi Austria spre văi, grăbind topirea zăpezilor. 2. Uscător electric pentru păr. [pr.: fön] – Din fr. foehn, germ. Föhn …   Dicționar Român

  • Foehn — Foehn, n. [G. dial. (Swiss), fr. L. Favonius west wind. Cf. {Favonian}.] (Meteor.) (a) A warm dry wind that often blows in the northern valleys of the Alps, due to the indraught of a storm center passing over Central Europe. The wind, heated by… …   The Collaborative International Dictionary of English

  • foehn — [fān; ] Ger [ fën] n. [Ger dial. föhn < MHG phönne < OHG fonno < LL * faunjo < L Favonius, west wind: see FAVONIAN] a warm, dry wind blowing down into the valleys of a mountain, esp. in the Alps …   English World dictionary

  • Foehn — Effet de foehn Régime de Foehn dans les Pyrénées caractérisé par une bande de ciel bleu puis, en aval du phénomène, des nuages « soufflés » traduisant un vent puissant L’effet de foehn, ou effet de föhn, est un phénomène météorologique… …   Wikipédia en Français

  • foehn — var. of FOEHN. * * * noun a warm dry wind that blows down the northern slopes of the Alps • Syn: ↑fohn • Hypernyms: ↑wind, ↑air current, ↑current of air * * * noun or föhn …   Useful english dictionary

  • foehn — fenas statusas T sritis ekologija ir aplinkotyra apibrėžtis Šiltas ir sausas, dažnai smarkus ir gūsingas, nuo kalnų į slėnius pučiantis vėjas. atitikmenys: angl. foehn; foen wind vok. Föhn, m rus. фён, m …   Ekologijos terminų aiškinamasis žodynas

  • foehn — or föhn noun Etymology: German Föhn Date: 1861 a warm dry wind blowing down the side of a mountain …   New Collegiate Dictionary

  • foehn — noun /fɜːn,feɪn,fɝn,feɪn/ a) A warm dry wind blowing down the side of a mountain in northern and central Europe. b) A similar wind in any mountainous area …   Wiktionary


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