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downdraft
- Sinônimos - Inglês
- downdraught
- Definição1
- A relatively small-scale downward current of air. These are common near cumuliform clouds, in precipitation areas, and on leeward side of large features. They pose risks to light aircraft and helicopters, especially those flying near the ground.
- Fonte1
- KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
- Definição2
- Small-scale downward moving air current in a cumulonimbus cloud.
- Fonte2
- AMERICAN METEOROLOGICAL SOCIETY. Glossary of meteorology. [S.l., última modificação 05 oct. 2015]. Disponível em: < http://glossary.ametsoc.org/wiki/Main_Page >. Acesso em: 9 maio 2022.
- Fonte3
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Aircraft accident digest n.29. Montreal, 1985. (Cir. 191 AN/116).
- Nota Adicional1
- In aviation terminology (especially in connection with aircraft turbulence) a relatively small-scale current of air with marked vertical motion, that is, updraft or downdraft.
- Contexto
- A microburst contains both a downdraft and a decreasing headwind.
- Subárea
- Meteorology
- Related Term
- updraft
- Français
- courant descendant
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