TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A shower that is produced by local convection within an unstable air mass...  3, record 1, English, - airmass%20shower

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

Classification of air masses in terms of :. latitude of origin(tropical, polar, arctic or antarctic) ;. the nature of the underlying surface(continental or maritime) ;. hydrostatic stability(stable or unstable) ;. the difference between the temperature of an air mass and that of the underlying surface or of a neighbouring air mass(warmer or colder).  1, record 2, English, - air%2Dmass%20classification

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Classification des masses d'air d'après : .l'origine (tropicale, polaire, arctique ou antarctique); .la nature de la surface sous-jacente (continentale ou maritime); .la stabilité hydrostatique (air stable ou instable); .la différence entre la température d'une masse d'air et celle de la surface sous-jacente ou de la masse d'air voisine (plus chaude ou plus froide).  2, record 2, French, - classification%20des%20masses%20d%27air

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

División de las masas de aire en clases según: .la latitud de su origen (aire tropical, polar, ártico o antártico); .la naturaleza de la superficie sobre la que se encuentra (aire continental o marítimo); .el grado de estabilidad hidrostática (aire estable o inestable); .la diferencia en temperatura con respecto a la de la superficie subyacente o a la de una masa vecina (aire más frío o más caliente).  1, record 2, Spanish, - clasificaci%C3%B3n%20de%20las%20masas%20de%20aire

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A thunderstorm which occurs within an unstable air mass and which is not triggered by the passage of a front.  1, record 3, English, - air%2Dmass%20thunderstorm

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Orage se produisant au sein d'une masse d'air instable et qui n'est pas déclenché par le passage d'un front.  2, record 3, French, - orage%20de%20masse%20d%27air

Record number: 3, Textual support number: 1 CONT

Les orages se développent, soit au sein de masses d'air riches en vapeur d'eau et fortement réchauffées à la base (orages dits de masse d'air), que l'on observe plus fréquemment pendant le semestre estival, soit dans l'air chaud, le long d'une surface frontale (orages frontaux).  3, record 3, French, - orage%20de%20masse%20d%27air

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Tormenta que se produce dentro de una masa de aire inestable y no es causada por el paso de un frente.  1, record 3, Spanish, - tormenta%20de%20masa%20de%20aire

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

Air mass having static instability in its lower layers ...  3, record 4, English, - unstable%20air%20mass

Record number: 4, Textual support number: 1 CONT

If the airmass is unstable, air which is pushed upward by some force will continue upward. An unstable airmass usually contains relatively warm (usually moist) air near the earth’s surface and relatively cold (usually dry) air in the mid and upper levels of the atmosphere.  4, record 4, English, - unstable%20air%20mass

Record number: 4, Textual support number: 1 OBS

unstable air mass :... convective clouds and precipitation occur if its moisture content is sufficiently high.  3, record 4, English, - unstable%20air%20mass

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Masse d'air présentant de l'instabilité hydrostatique dans ses couches inférieures [...]  2, record 4, French, - masse%20d%27air%20instable

Record number: 4, Textual support number: 1 OBS

masse d'air instable : [...] des nuages convectifs et des précipitations se produisent si sa teneur en humidité est suffisamment élevée  2, record 4, French, - masse%20d%27air%20instable

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

Masa de aire que presenta inestabilidad hidrostática en las capas inferiores [...]  1, record 4, Spanish, - masa%20de%20aire%20inestable

Record number: 4, Textual support number: 1 OBS

masa de aire inestable: [...] se producen nubes convectivas y precipitaciones si el contenido de humedad es suficientemente alto.  1, record 4, Spanish, - masa%20de%20aire%20inestable