TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
MOUVEMENT CYCLONIQUE [2 records]
Record 1 - internal organization data 1999-12-24
Record 1, English
Record 1, Subject field(s)
- Atmospheric Physics
Record 1, Main entry term, English
- vortex ring
1, record 1, English, vortex%20ring
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
All downbursts are characterized by a circulation termed a "vortex ring", a vertically rotating circle of air. 2, record 1, English, - vortex%20ring
Record number: 1, Textual support number: 2 CONT
Microbursts result as a strong downflow bursts from a parent cloud and strike the Earth's surface at an angle (usually) off-the-vertical. The air striking the Earth flows out from the centre (called an "outflow") at speeds which depend on the downflow speed and striking angle. As the outflowing air undercuts the surface air, a vertical roll begins to develop that eventually encircles the downflow centre as a horizontal vortex ring. 1, record 1, English, - vortex%20ring
Record 1, French
Record 1, Domaine(s)
- Physique de l'atmosphère
Record 1, Main entry term, French
- anneau tourbillonnaire
1, record 1, French, anneau%20tourbillonnaire
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
À mesure que le courant descendant s’intensifie, le flux d’air froid qui en est issu progresse dans l'air ambiant des basses couches, s’enroulant dans un mouvement cyclonique autour du centre de la circulation. À cet endroit, le flux d’air instable est concentré et rejeté en altitude par la convergence de l'air froid. [...] Le maximum de vorticité [...] est à ce moment situé près du sol à la pointe de cette méso-occlusion. J. B. Klemp et R. Rotunno ont montré [...] que ce maximum se produit en fait dans un anneau de 1 à 2 kilomètres de diamètre autour du centre de la circulation. 2, record 1, French, - anneau%20tourbillonnaire
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1995-02-21
Record 2, English
Record 2, Subject field(s)
- Atmospheric Physics
Record 2, Main entry term, English
- ring vortex 1, record 2, English, ring%20vortex
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Figure 7.5.10 illustrates the general circulation for the outflow microburst where the downflow is completely encircled by the horizontal vortex; and the rotor microburst which does not form a continuous circular horizontal vortex, or may be part of a macroburst or a break-away from a ring vortex. 1, record 2, English, - ring%20vortex
Record 2, French
Record 2, Domaine(s)
- Physique de l'atmosphère
Record 2, Main entry term, French
- tourbillon annulaire
1, record 2, French, tourbillon%20annulaire
proposal, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
À mesure que le courant descendant s’intensifie, le flux d’air froid qui en est issu progresse dans l'air ambiant des basses couches, s’enroulant dans un mouvement cyclonique autour du centre de la circulation. À cet endroit, le flux d’air instable est concentré et rejeté en altitude par la convergence de l'air froid. [...] Le maximum de vorticité [...] est à ce moment situé près du sol à la pointe de cette méso-occlusion. J. B. Klemp et R. Rotunno ont montré [...] que ce maximum se produit en fait dans un anneau de 1 à 2 kilomètres de diamètre autour du centre de la circulation. 2, record 2, French, - tourbillon%20annulaire
Record 2, Spanish
Record 2, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: