- 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, ...
1. A mass of snow (perhaps containing ice and rocks) moving rapidly down a steep mountain slope. Avalanches may be characterized as loose and turbulent, or slab; either type may be dry or wet according to the nature of the snow forming it, although dry snow usually forms loose avalanches and wet snow forms slabs. A large avalanche sweeps a current of air along with and in front of it as an avalanche wind, which supplements its already tremendous destructive force. See wind slab; compare sluff. 2. A mass of earth material (soil, rock, etc. ) moving rapidly down a steep slope.
Industry:Weather
During operating conditions, the volume of water in a reservoir between the minimum and maximum water levels.
Industry:Weather
The difference between the current soil moisture and the wilting point. Maximum available water is the field capacity minus the wilting point.
Industry:Weather
The portion of water in a soil that can be readily absorbed by plant roots; generally considered to be that water held in the soil against a soil water pressure of up to approximately 1500 kPa.
Industry:Weather
Total solar radiation intercepted by the earth, given by 2πrS, where r is the earth's radius and S the solar constant.
Industry:Weather
That portion of the total potential energy that may be converted to kinetic energy in an adiabatically enclosed system. If the atmosphere were horizontally stratified, none of its potential energy would be so convertible. Thus, the available potential energy for the atmosphere in a given state is the difference between the value of the total potential energy in the given state and the value it would have after an adiabatic redistribution of mass had produced a horizontal stratification.
Industry:Weather
A mercury-in-glass thermometer attached to the stem of a reversing thermometer. It is read at the same time as the reversing thermometer so that the correction to the reading of the latter, resulting from change in temperature since reversal, can be computed.
Industry:Weather
Amount of fall in a stream that is available for generation of hydroelectric power.
Industry:Weather
A northwest wind in the center of the Massif Central of France (i.e., coming from Auvergne). It is cold and generally brings rain or snow.
Industry:Weather
