Climatological, meteorological and geographical study of Fohn-type and Bora-type local winds

Abstract

The Fohn is a fall wind on the lee side of a mountain range. When it blows, the air temperature becomes higher than before on the leeward slope. The Bora is also a fall wind on the lee side of a mountain range, but when it begins, the air temperature becomes lower than before on the leeward slope. This definition can be applied regardless of the vertical structure along the cross-section, which is not always easy to observe for every case in the field. Second, the local winds caused by the airflows crossing a mountain range are classified according to the above definition. Third, vertical and horizontal models are illustrated, and descriptions of topography, clouds, precipitation and wind phenomena for the 12 parts from the windward regions to the leeward regions along the cross-section are given in a table. -from English summary