- 行业: Weather
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The American Meteorological Society promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences and the advancement of their professional applications. Founded in 1919, AMS has a membership of more than 14,000 professionals, ...
Gauging station at which two water level gauges are used to define the water surface slope for developing a stage–discharge relationship.
Industry:Weather
An old English term for “against the sun,” contra solem. Compare deasil.
Industry:Weather
An old English term for “against the sun,” contra solem. Compare deasil.
Industry:Weather
Ocean surface gravity waves that are still growing or being sustained by the wind. These waves propagate mainly in the direction of the wind, in contrast to swell.
Industry:Weather
In aviation terminology, route or terminal weather conditions that allow operation of aircraft under visual flight rules.
Industry:Weather
A theory of cyclone development based upon the principles of wave formation on an interface between two fluids. In the atmosphere, a front is taken as such an interface. See Helmholtz instability; Compare barrier theory, convection theory of cyclones.
Industry:Weather
The generally small, localized atmospheric circulations. They are represented by such phenomena as local winds, thunderstorms, and tornadoes. Compare primary circulation, secondary circulation; see mesometeorology.
Industry:Weather
In meteorology, a cloud column or inverted cloud cone, pendant from a cloud base. This supplementary feature occurs mostly with cumulus and cumulonimbus; when it reaches the earth's surface it constitutes the cloudy manifestation of an intense vortex, namely, a tornado or waterspout. See cloud classification.
Industry:Weather
A type of directional antenna comprising an elevated linear array of horizontal dipoles with different lengths and spacings, typically arranged as a driven element, reflector element, and several director elements. The dipoles are organized to maximize the radiation in the forward direction. Radar systems requiring large antennas often use arrays of Yagi-Uda antennas (e.g., some wind profiler radars).
Industry:Weather
