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gradient wind
Definição1
A long isobars with velocity exactly balancing pressure gradient; equilibrium between force directed towards region of low pressure and centrifugal forces.
Fonte1
GUNSTON, Bill. The Cambridge aerospace dictionary. Cambridge: Cambridge University, 2004. vii, 740 p. (Cambridge aerospace series.)
Definição2
Horizontal wind having the same direction as the geostrophic wind but with a magnitude consistent with a balance of three forces: the pressure gradient force, the Coriolis force, and the centrifugal force arising from the curvature of a parcel trajectory.
Fonte2
Brill, Keith F. Revisiting an old concept: the gradient wind. In: AMERICAN METEOROLOGICAL SOCIETY. Journals. Disponível em: < https://journals.ametsoc.org/configurable/content/journals$002fmwre$002f142$002f4$002fmwr-d-13-00088.1.xml?t:ac=journals%24002fmwre%24002f142%24002f4%24002fmwr-d-13-00088.1.xml>. Acesso em: 08 nov. 2022.
Fonte3
WORLD METEOROLOGICAL ORGANIZATION. Weather climate water: AeM SERIES No. 3: aviation hazards. 2018 ed. Geneva, Switzerland, 2018.
Contexto
In very unstable situations with heavy showers and thunderstorms, gusts may be in excess of the gradient wind and may reach that of the 5 000 ft wind.
While the gradient wind is precisely defined with respect to its direction, the magnitude of the gradient wind is not so precisely defined owing to its dependence on the curvature of a parcel trajectory, which may follow the geostrophic wind or the actual wind.
Subárea1
Aeronautical Meteorology
Related Term
gradient wind speed
Português
vento gradiente