Meteorology

Meteorology

A database of terms pertaining to the scientific study of the atmosphere.

Industry: Weather

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Meteorology

Joran

Weather; Meteorology

A wind blowing from the Jura Mountains in Switzerland from the northwest toward Lake Geneva. It is cold and snowy and may be very turbulent, especially in spring.

Khamsin

Weather; Meteorology

A dry, dusty, and generally hot desert wind in Egypt and over the Red Sea. It is generally southerly or southeasterly, occurring in front of depressions moving eastward across North Africa or the ...

A first-order rate coefficient (in units of inverse time) for the occurrence of a photochemical reaction. The j-value is calculated from the product of the absorption cross section of the molecule ...

J-value

Weather; Meteorology

Longitudinal rolls

Weather; Meteorology

Atmospheric coherent structures in the form of persistent organised counterrotating roll vortices that are approximately aligned with the mean wind and span the depth of the planetary boundary layer. ...

Mixing-length theory

Weather; Meteorology

A method of describing the movement of trace species on the turbulent or subgrid scale. The theory relates the fluxes of the trace species to the gradient of the mean quantities via the eddy ...

K theory

Weather; Meteorology

A method of describing the movement of trace species on the turbulent or subgrid scale. The theory relates the fluxes of the trace species to the gradient of the mean quantities via the eddy ...