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TROWAL [1 record]

Record 1 2007-10-31

English

Subject field(s)
  • Atmospheric Physics
DEF

A transition zone in the atmosphere where an advancing cold air mass sandwiches a warm air mass between another cold air mass pushing the warm air into the upper atmosphere.

CONT

The cold front of an intensifying weather system picks up speed and catches up with the warm front. When the cold front reaches the warm front, the warm air is caught and squeezed more and more between the two fronts. It will be lifted and the system becomes occluded, producing what is known as a trowal ("TRough Of Warm Air aLoft").

CONT

The weather associated with a TROWAL varies considerably from dry to showery to heavy precipitation.

CONT

An occluded front is moving across the province today. [Example approved by the Avalanche Bulletin Terminology Standardization Committee.]

OBS

occluded front; trough of warm air aloft; TROWAL: terms officially approved by the Avalanche Bulletin Terminology Standardization Committee.

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Front séparant deux masses d'air froid qui sont entrées en contact par suite du processus d'occlusion.

CONT

On verra le passage d'un front occlus sur la province aujourd'hui. [Exemple entériné par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.]

OBS

talweg : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2004).

OBS

front occlus : terme uniformisé par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.

Key term(s)
  • thalweg d'air chaud en altitude

Spanish

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

Proyección sobre la superficie de la Tierra de una lengua de aire caliente en altura, como sucede en el proceso de oclusión de una depresión.

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