Mistral: Difference between revisions
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<div class="definition"><div class="short_definition">A north [[wind]] that blows down the Rhone valley south of Valence, France, and into the Gulf of Lions.</div><br/> <div class="paragraph">It is strong, squally, cold, and dry, the combined result of the basic [[circulation]], a [[fall wind]], and [[jet-effect wind]]. It blows from the north or northwest in the Rhône Delta, where it is strongest, from northwest in Provence and from northeast in the valley of the Durance below Sisteron. A general mistral usually begins with the [[development]] of a [[depression]] over the Tyrrhenian Sea or Gulf of Genoa with an [[anticyclone]] advancing from the Azores to central France. It often exceeds 27 m s<sup> | <div class="definition"><div class="short_definition">A north [[wind]] that blows down the Rhone valley south of Valence, France, and into the Gulf of Lions.</div><br/> <div class="paragraph">It is strong, squally, cold, and dry, the combined result of the basic [[circulation]], a [[fall wind]], and [[jet-effect wind]]. It blows from the north or northwest in the Rhône Delta, where it is strongest, from northwest in Provence and from northeast in the valley of the Durance below Sisteron. A general mistral usually begins with the [[development]] of a [[depression]] over the Tyrrhenian Sea or Gulf of Genoa with an [[anticyclone]] advancing from the Azores to central France. It often exceeds 27 m s<sup>-1</sup> (60 mph) and reaches 38 m s<sup>-1</sup> (85 mph) in the lower Rhône valley and 22 m s<sup>-1</sup> (50 mph) at Marseilles, decreasing both east and west and out to sea. It remains strong to a height of 2–3 km. In the absence of a strong [[pressure gradient]], a weaker katabatic local mistral develops in the Rhône valley. A general mistral usually lasts for several days, sometimes with short lulls. It is most violent in winter and spring, and may do considerable damage. Market gardens and orchards are protected from it by windbreaks, and rural houses are built with only a few openings on the side exposed to it. The mistral has a variety of local names: mangofango in Provence; sécaire, maistrau, maistre, or magistral in Cévennes; dramundan in Perpignan; [[cierzo]] in Spain; [[cers]] in the Pyrenees, etc. South of Mont Ventoux a similar wind is named [[bise]]. A local west wind of mistral type that descends from Mt. Canigou to the plains of Roussillon is called canigonenc. <br/>''Compare'' [[bora]], [[tramontana]], [[maestro]]; <br/>''see also'' [[cavaliers]].</div><br/> </div><div class="reference">Defant, F. 1951. Compendium of Meteorology. p. 670. </div><br/> | ||
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Latest revision as of 14:41, 20 February 2012
mistral
A north wind that blows down the Rhone valley south of Valence, France, and into the Gulf of Lions.
It is strong, squally, cold, and dry, the combined result of the basic circulation, a fall wind, and jet-effect wind. It blows from the north or northwest in the Rhône Delta, where it is strongest, from northwest in Provence and from northeast in the valley of the Durance below Sisteron. A general mistral usually begins with the development of a depression over the Tyrrhenian Sea or Gulf of Genoa with an anticyclone advancing from the Azores to central France. It often exceeds 27 m s-1 (60 mph) and reaches 38 m s-1 (85 mph) in the lower Rhône valley and 22 m s-1 (50 mph) at Marseilles, decreasing both east and west and out to sea. It remains strong to a height of 2–3 km. In the absence of a strong pressure gradient, a weaker katabatic local mistral develops in the Rhône valley. A general mistral usually lasts for several days, sometimes with short lulls. It is most violent in winter and spring, and may do considerable damage. Market gardens and orchards are protected from it by windbreaks, and rural houses are built with only a few openings on the side exposed to it. The mistral has a variety of local names: mangofango in Provence; sécaire, maistrau, maistre, or magistral in Cévennes; dramundan in Perpignan; cierzo in Spain; cers in the Pyrenees, etc. South of Mont Ventoux a similar wind is named bise. A local west wind of mistral type that descends from Mt. Canigou to the plains of Roussillon is called canigonenc.
Compare bora, tramontana, maestro;
see also cavaliers.
Compare bora, tramontana, maestro;
see also cavaliers.
Defant, F. 1951. Compendium of Meteorology. p. 670.
