- 行业: Weather
- Number of terms: 60695
- Number of blossaries: 0
- Company Profile:
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, ...
The simplest representation of the electrostatic structure of an electrified cloud with overall charge neutrality. Ordinary thunderstorms are characterized by upper positive charge and lower negative charge.
Industry:Weather
The standard deviation of a sufficiently large number of measurements of the same quantity by the same instrument or method. Hence, the noncorrectable part of the inaccuracy of an instrument; it represents the limit of measurement precision. The uncertainty of an instrument is caused by the unpredictable effects upon its performance of such factors as friction, backlash, and electronic noise.
Industry:Weather
The study of the evolution of a time-dependent dynamic system from an equilibrium state A to another equilibrium state B. The different equilibrium states may be two different equilibrium states of a dynamical system having multiequilibrium states, or different equilibrium states that are due to change(s) in either the internal or the external characteristics of the dynamical system.
Industry:Weather
The statement that every substance has a finite positive entropy, and the entropy of a crystalline substance is zero at the temperature of absolute zero. Modern quantum theory has shown that the entropy of crystals at 0 K is not necessarily zero. If the crystal has any asymmetry, it may exist in more than one state; and there is, in addition, an entropy residue deriving from nuclear spin. See thermodynamic probability.
Industry:Weather
Water in all states (solid, liquid, or vapor), in storage or in flux within the hydrologic cycle, that is necessary for a sustainable quality of life, as well as for sustaining the natural environment.
Industry:Weather
The stress placed upon a surface by the wind. See pressure, wind pressure.
Industry:Weather
The proportionality factor between energy flux and temperature gradient (see conduction). Thermal conductivity is to an extent an intrinsic property of a medium but may depend on temperature. The thermal conductivity of air is about 50% greater than that of water vapor and that of both increases (approximately) as the square root of absolute temperature. The thermal conductivity of liquid water is about 25 times that of air. Thermal conductivities of solids, especially metals, are thousands of times greater than that of air.
Industry:Weather
Water containing the waste matter (liquid or solid) of a community, manufacturing process, or industrial plant.
Industry:Weather
Year in which streamflow records show runoff significantly greater than the mean annual runoff.
Industry:Weather
