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Foehn wind Pictures



 
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Wikipedia: A foehn wind or föhn wind is a type of dry down-slope wind which occurs in the lee of a mountain range. It is a rain shadow wind which results from the subsequent adiabatic warming of air which has dropped most of its moisture on windward slopes. 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 clouds in Geneva (Switzerland)]  
cc-by/3.0 from jezFabi
 

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