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warm occluded front [2 records]

Record 1 2004-11-19

English

Subject field(s)
  • Atmospheric Physics
DEF

Occlusion in which the cold air behind the occluded front is warmer than the cold air in advance of it.

CONT

There are three basic types of occluded front, determined by the relative coldness of the air behind the original cold front to the air ahead of the warm (or stationary) front. 1) A cold occlusion results when the coldest air is behind the cold front. ... 2) When the coldest air lies ahead of the warm front, a warm occlusion is formed, in which case the original cold front is forced aloft at the warm front surface. At the earth's surface, coldest air is replaced by less cold air. 3) A third and frequent type, a neutral occlusion ...

Key term(s)
  • warm front type occlusion
  • warm type occlusion

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Occlusion où l'air froid derrière le front occlus est plus chaud que l'air froid à l'avant du front.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
DEF

Oclusión en la que el aire detrás del frente es menos frío que el que se encuentra delante.

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Record 2 2004-11-18

English

Subject field(s)
  • Atmospheric Physics
CONT

A warm occluded front occurs when a cool front overtakes a warm front overlying a cold front. The primary difference is the location of the upper level front. The cold front is ahead of the surface occluded front. In this case the weather is similar to a warm front. The surface front trails the upper level front by about 300 km.

French

Domaine(s)
  • Physique de l'atmosphère
CONT

Un front occlus chaud a lieu lorsqu'un front frais pousse un front chaud qui était au-dessus d'un front froid. Ce front frais s'élève lui aussi au-dessus de la masse d'air plus froide, en forçant le front chaud à s'élever davantage. Dans ce cas, ce front-ci (le plus froid) est plus avancé que le front occlus au niveau de la surface, de l'ordre de 300 km en avant. On a alors un temps similaire à celui d'un front chaud.

CONT

Un front occlus se crée lorsqu'un front froid, plus rapide rejoint un front chaud dans la circulation de la perturbation. La masse d'air froid plus dense soulève la masse d'air chaud plus légère qui finit par ne plus être en contact avec le sol. Il se produit alors des chutes de pluies régulières et elles peuvent être importantes. [...] Il existe 2 types de coupe de front occlus : [...] La coupe de front occlus chaud [...] La coupe de front occlus froid.

Spanish

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