- 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 variation in atmospheric pressure due to the diurnal differential heating of the atmosphere by the sun; so called in analogy to the conventional gravitational tide. See solar atmospheric tide.
Industry:Weather
A very rapidly moving pressure wave in a closed conduit, usually resulting from a sudden stoppage or change in the flow.
Industry:Weather
A very light breeze that occurs in calm weather in inlets where the tide sets strongly; it blows onshore with rising tide and offshore with ebbing tide.
Industry:Weather
A vertical temperature gradient, in some layer of a body of water, that is appreciably greater than the gradients above and below it; also a layer in which such a gradient occurs. The permanent thermocline refers to the thermocline not affected by the seasonal and diurnal changes in the surface forcing; it is therefore located below the yearly maximum depth of the mixed layer and the influence of the atmosphere. The seasonal thermocline refers to the thermocline not affected by the diurnal changes in the surface forcing. In general, it is established each year by heating of the surface water in the summer, and is destroyed the following winter by cooling at the surface and wind-driven mixing. The diurnal thermocline refers to the thermocline that, in general, is established each day by heating of the surface water and is destroyed the following night by cooling and/or mixing. See Also transition layer.
Industry:Weather
A unit of power equal to one joule per second or 10<sup>7</sup> ergs per second.
Industry:Weather
A verification system designed for the 30-hour sea level prognostic chart produced by the U. S. WBAN Analysis Center in the 1950s.
Industry:Weather
A variety of phenomena that result from the refraction of terrestrial light by the earth's atmosphere. It is distinguished from astronomical refraction, which is used when the source is outside our atmosphere.
Industry:Weather
A variational objective analysis performed at a single time in the three space dimensions to create an estimate of the atmospheric state.
Industry:Weather
A type of VLF electromagnetic signal generated by some lightning discharges. Whistlers propagate along geomagnetic field lines and can travel back and forth several times between the Northern and Southern Hemispheres. So named from the sound they produce in radio receivers.
Industry:Weather
