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wind shear
- Sinônimos
- shear of the wind
- shear vector
- Definição1
- A change in wind speed and/or wind direction in a short distance resulting in a tearing or shearing effect. It can exist in a horizontal or vertical direction and occasionally in both.
- Fonte1
- JEPPESEN chart training. Englewood: Jeppesen Sanderson, Inc., c2002. 1 DVD
- Definição2
- A strong horizontal or vertical wind shift that acts at right angles to the direction the wind is blowing. Wind shear, normally associated with the passage of a front, can be dangerous if an aircraft flies through one when slowed for landing or immediately after takeoff.
- Fonte2
- CRANE, Dale (ed.). Dictionary of aeronautical terms. 4th ed. Newcastle: ASA, 2006.
- Definição3
- The rate of change in the wind velocity in space, considered as a vector. A vertical shear is a change in the wind velocity with height, whereas a horizontal shear is the change in the wind with the horizontal distance perpendicular to the flow.
- Fonte3
- KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
- Definição4
- The local variation of the wind vector or any of its components in a specific direction.
- Fonte4
- WORLD METEOROLOGICAL ORGANIZATION. International Meteorological vocabulary. 2nd ed. Geneva, 1992. (WMO, n.182). Disponível em: < https://library.wmo.int/index.php?lvl=notice_display&id=220#.XeauGOhKiUk >. Acesso em: 08 jun. 2021.
- Nota adicional1
- Acronym in English: WS
- Contexto
- The forecast and local weather conditions may have significant importance on both the flight conditions and the aircraft performance. This will include the atmospheric conditions, sun or moon locations, wind and any unusual considerations such as volcanic ash, smoke, windshear, visual illusions or icing, along with take-off or destination considerations that may have impacted the take-off or landing profile, such as rushed departure or additional fuel reserve due to expected delays or diversions.
- Wind shear alerts shall give concise, up-to-date information related to the observed existence of wind shear involving a headwind/tailwind change of 7.5 m/s (15 kt) or more which could adversely affect aircraft on the final approach path or initial take-off path and aircraft on the runway during the landing roll or take-off run.
- Subárea1
- Aeronautical Meteorology
- Variante
- windshear
- Português
- tesoura de vento
- Imagem
Strong wind shear in the high troposphere forms the anvil-shaped top of this mature cumulonimbus cloud, or thunderstorm.
Fonte: http://en.wikipedia.org/wiki/File:Thunderhead.anvil.jpg
