- Industri: 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, ...
The rate of transfer of a conservative fluid property through a surface by turbulent eddies.
In the case of an unchanging mean state, the eddy flux of a property ''S'' in the ''z'' direction is expressed by
<center>[[File:ams2001glos-Ee2.gif
Industry:Weather
1. The covariance between two variables, associated with turbulent motions.
For example, if the overbar represents a mean value, and the prime denotes a deviation from the mean, then
<center>[[File:ams2001glos-Ee1.gif
Industry:Weather
The square of the amplitude of the (complex) Fourier transform of an aperiodic function.
Thus, if f(t) is the given function, its Fourier transform is
<center>[[File:ams2001glos-Ee21.gif
Industry:Weather
That function of position Φ the negative gradient of which is the (static) electric field:
<center>[[File:ams2001glos-Ee19.gif
Industry:Weather
A dimensionless number relating the ratio of eddy viscous forces to Coriolis forces.
Explicitly, the vertical Ekman number is
<center>[[File:ams2001glos-Ee14.gif
Industry:Weather
These are the four mathematical/physical conditions used when integrating the fourth-order differential equations governing the Ekman layer.
These conditions are
<center>[[File:ams2001glos-Ee12.gif
Industry:Weather
In radar and radio propagation studies, a value for the radius of the earth that may be used in place of the actual radius to correct for refraction by the atmosphere.
The effective earth radius is a convenient fiction that makes straight the actual curved path of a radio ray in the atmosphere by presenting it relative to an imaginary earth with a radius larger than the radius of the real earth, thus maintaining the relative curvature between earth and radio ray. The effective earth radius ''R''<sub>e</sub> is approximately
<center>[[File:ams2001glos-Ee10.gif
Industry:Weather
