Type of dry down-slope wind occurring near mountains
"Föhn" redirects here. For the antiaircraft rocket, see Henschel Hs 297.
The causes of the Foehn effect in the lee of mountains. Adapted from:[1]Dissolving Föhn clouds over Cumbre Nueva (1400 m), La Palma
A Foehn or Föhn (UK: /fɜːn/, US: /feɪn/fayn,[2][3]US also /fʌn,fɜːrn/fu(r)n[4][5]), is a type of dry, relatively warm, downslope wind that occurs in the lee (downwind side) of a mountain range.
It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped most of its moisture on windward slopes (see orographic lift). As a consequence of the different adiabatic lapse rates of moist and dry air, the air on the leeward slopes becomes warmer than equivalent elevations on the windward slopes.
Foehn winds can raise temperatures by as much as 14 °C (25 °F)[6] in just a matter of hours. Switzerland, southern Germany and Austria have a warmer climate due to the Foehn, as moist winds off the Mediterranean Sea blow over the Alps.
^Elvidge, Andrew D.; Renfrew, Ian A. (14 May 2015). "The Causes of Foehn Warming in the Lee of Mountains". Bulletin of the American Meteorological Society. 97 (3): 455–466. Bibcode:2016BAMS...97..455E. doi:10.1175/bams-d-14-00194.1.
^Jones, Daniel (2011). Roach, Peter; Setter, Jane; Esling, John (eds.). Cambridge English Pronouncing Dictionary (18th ed.). Cambridge University Press. ISBN 978-0-521-15255-6.
^Wells, John C. (2008). Longman Pronunciation Dictionary (3rd ed.). Longman. ISBN 978-1-4058-8118-0.
^Upton, Clive; Kretzschmar, William A. Jr. (2017). The Routledge Dictionary of Pronunciation for Current English (2nd ed.). Routledge. ISBN 978-1-138-12566-7.
A Foehn or Föhn (UK: /fɜːn/, US: /feɪn/ fayn, US also /fʌn, fɜːrn/ fu(r)n), is a type of dry, relatively warm, downslope wind that occurs in the lee (downwind...
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