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WIND GUST [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2002-12-11

English

Subject field(s)
  • Atmospheric Physics
  • Pleasure Boating and Yachting
  • Aircraft Piloting and Navigation
DEF

Sudden, brief increase of the wind speed over its mean value.

CONT

It is a much shorter-lived feature than a "squall" and is also different in nature, being due mainly to mechanical interference with the steady flow of air; it is, therefore, a pronounced feature of airflow near the ground, especially where there are large obstructions. Other factors, notably temperature lapse rate and vertical wind shear, are important, however, in determining the existence and magnitude of gusts. Such factors may produce gusts in circumstances where mechanical interference with the flow appears to be insignificant, as in "clear-air turbulence".

CONT

With gusts to 25.

OBS

gust of wind: term also used in sailing.

OBS

gust: term officially approved by the International Civil Aviation Organization (ICAO).

Key term(s)
  • gust of air

French

Domaine(s)
  • Physique de l'atmosphère
  • Yachting et navigation de plaisance
  • Pilotage et navigation aérienne
DEF

Hausse brève et soudaine de la vitesse du vent par rapport à sa valeur moyenne.

CONT

Les rafales s'expliquent par l'instabilité verticale de la masse d'air. Elles résultent de l'irruption, au niveau du sol, de particules originaires des couches élevées, où la vitesse est très grande en raison de l'absence de frottement.

CONT

Les rafales [sont] matérialisées sur les anémogrammes par des pics filiformes [...]

OBS

Pléonasme : rafale : une rafale de vent.

OBS

rafale : terme aussi employé [dans le domaine de] la voile.

OBS

rafale : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes et par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Vela y navegación de placer
  • Pilotaje y navegación aérea
DEF

Aumento breve y repentino de la velocidad del viento respecto a su valor medio.

OBS

ráfaga : término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).

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