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Foehn

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foehn

[fān]
(meteorology)
A warm, dry wind on the lee side of a mountain range, the warmth and dryness being due to adiabatic compression as the air descends the mountain slopes. Also spelled föhn.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Foehn

 

a strong, gusting wind of high temperature and low relative humidity that blows down from the mountains into the valleys in many mountain systems. The air properties of the foehn can be explained by its adiabatic heating during its descent down the mountain slopes. The foehn usually lasts less than 24 hours, although it can sometimes last up to five days. The change in temperature and relative humidity during a foehn can be extremely sudden and sharp. The foehn has been studied in the Alps, the Caucasus, the mountains of Middle Asia, and other mountainous regions.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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References in periodicals archive
As mentioned in the December Language Corner, there is no lack of natural catastrophes in Switzerland, and foehn is a chief contributor.
Figure 8 shows the near-surface wind field from INCA for the foehn episode (5 February 2014) when southerly flow was channeled into the valleys.
Monahan, 2013: Dynamics of the Foehn dynamics of the Foehn mechanism in the McMurdo Dry Valleys of Antarctica from Polar WRF.
Hachler, 2012: Understanding and forecasting Alpine foehn. Mountain Weather Research and Forecasting, F.
To help achieve that goal, Alain Foehn - one of Schleiss's PhD students - developed a model for making hydrological forecasts.
Temperatures in Hualien and Taitung in eastern Taiwan could top 38 degrees on Saturday due to possible foehn winds - warm and dry gusts that flow down the sheltered side of mountains into valleys - the bureau said.
Denny Foehn, Director of Sales & Marketing at RAMPF Tooling Solutions: "With tailor-made materials, expert advice, customer-specific service, and fast technical support, we make a success of even the most demanding projects.
A similar concern regarding the lack of similarity in [theta] and [[theta].sub.e] for frontal analysis has been noted by Heimann (1992) in the case of a prefrontal foehn. The western European prefrontal convergence lines associated with north African air masses (Dahl and Fischer 2016) may also have this behavior, although maps of surface [[theta].sub.e] were not presented.
The temperature might have been affected by a phenomenon known as the Foehn Effect, a dry and warm down-slope wind that occurs to the lee of hills or mountains.
Explaining why it is going to be so warm, Cardiff-born Channel 4 presenter Liam Dutton said: "The potential to break February records will depend on the Foehn effect happening.
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