- 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, ...
A wind that ascends a mountain valley (upvalley wind) during the day; the daytime component of a mountain–valley wind system.
Industry:Weather
A disturbance of the flow pattern in the upper air, particularly one that is more strongly developed aloft than near the ground.
Industry:Weather
A disturbance of the flow pattern in the upper air, particularly one that is more strongly developed aloft than near the ground.
Industry:Weather
The characteristic cumulus cloud of the trade winds over the oceans in average, undisturbed weather conditions. These clouds are generally 5000–7000 ft thick at peak development and are based at about 2000–2500 ft altitude. The individual cloud usually exhibits a blocklike appearance since its vertical growth ends abruptly in the lower stratum of the trade-wind inversion. A group of fully grown clouds show considerable uniformity in size and shape.
Industry:Weather
The particular falling speed, for any given object moving through a fluid medium of specified physical properties, at which the drag forces and buoyant forces exerted by the fluid on the object just equal the gravitational force acting on the object. It falls at constant speed, unless it moves into air layers of different physical properties. In the atmosphere, the latter effect is so gradual that objects such as raindrops, which attain terminal velocity at great heights above the surface, may be regarded as continuously adjusting their speeds to remain at all times essentially in the terminal fall condition. The terminal fall velocity of water droplets in still air can be computed from Stokes's law for drops smaller than 80 μm in diameter. Above that size, empirical values must be used.
Industry:Weather
A wave that is accompanied by substantial net movement of the fluid in the direction of wave motion, although the wave propagates more rapidly than the fluid. Flood waves in rivers are translatory waves. Compare longitudinal wave.
Industry:Weather
A wave that is accompanied by substantial net movement of the fluid in the direction of wave motion, although the wave propagates more rapidly than the fluid. Flood waves in rivers are translatory waves. Compare longitudinal wave.
Industry:Weather
The characteristic cumulus cloud of the trade winds over the oceans in average, undisturbed weather conditions. These clouds are generally 5000–7000 ft thick at peak development and are based at about 2000–2500 ft altitude. The individual cloud usually exhibits a blocklike appearance since its vertical growth ends abruptly in the lower stratum of the trade-wind inversion. A group of fully grown clouds show considerable uniformity in size and shape.
Industry:Weather
The difference in height between low and high water tidal levels, equal to twice the tidal amplitude.
Industry:Weather
The difference in height between low and high water tidal levels, equal to twice the tidal amplitude.
Industry:Weather
