- Industry: Weather
- Number of terms: 60695
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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, ...
One of several accepted measures of central tendency. It is the most probable value of a discrete variate, or the point of maximum probability density in the case of a continuous variate.
Industry:Weather
A term for water of exceptionally uniform properties over an extensive depth range, caused in most instances by convection. Mode waters represent regions of water mass formation; they are not necessarily water masses in their own right but contribute significant volumes of water to other water masses. Because they represent regions of deep sinking of surface water, mode water formation regions are atmospheric heat sources. Subantarctic Mode Water is formed during winter in the subantarctic zone just north of the subantarctic front and contributes to the lower temperature range of central water; only in the extreme eastern Pacific Ocean does it obtain a temperature low enough to contribute to Antarctic Intermediate Water. Subtropical Mode Water is mostly formed through enhanced subduction at selected locations of the subtropics and contributes to the upper temperature range of central water. Examples of Subtropical Mode Water are the 18°C water formed in the Sargasso Sea, Madeira Mode Water formed at the same temperature but in the vicinity of Madeira, and 13°C water formed not by surface processes but through mixing in Agulhas Current eddies as they enter the Benguela Current.
Industry:Weather
A vehicle used to provide meteorological observations at a place where no fixed station exists, or to study the mesoscale processes or the microclimate of a region.
Industry:Weather
A category of pollution sources that release emissions as they travel, for example, automobiles, ships, etc. Compare stationary source.
Industry:Weather
A system of units consisting of meters, kilograms, and seconds. This natural, easily understood system is used around the world in commerce and by the public, but is not yet used extensively in the United States except in science and in some engineering disciplines. Compare meter–tonne–second system.
Industry:Weather
A ring of reduced precipitation and radar reflectivity just outside the eyewall of a tropical cyclone or between inner and outer concentric eyewalls. In many tropical cyclones, this is a distinct minimum of precipitation, with higher precipitation rates occurring farther from the center.
Industry:Weather
A method of thermodynamic analysis where the conserved variables for two different states of air (i.e., air parcels) are plotted on a thermodynamic diagram, and the ending state of a mixture of the two parcels is found on the straight line connecting the two initial states, with relative distance along the line proportional to the relative amounts of each parcel in the mixture. Mixing line analysis can help determine the origin of air within clouds. See conserved variable diagram.
Industry:Weather
The amount of turbulent mixing necessary to eliminate any static and dynamic instabilities in the atmosphere. Because atmospheric circulations that include turbulent eddies have finite velocities, the actual amount of mixing that can occur during a finite time interval might be less than the mixing potential. Some nonlocal turbulence models parameterize the amount of turbulence as proportional to the mixing potential, where local as well as nonlocal instabilities are considered. See responsive parameterization.
Industry:Weather
Zone separating regions of two different fluids through which a gradient exists to mix the fluid properties.
Industry:Weather
