Meteorology

Meteorology

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

Industry: Weather

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Meteorology

lag

Weather; Meteorology

1. That part of the difference between the output of an instrument and its input that is due to the failure of the instrument to respond instantaneously to variations of the input signal. It is a ...

1. Most widely used in mountain meteorology to denote a downslope flow driven by cooling at the slope surface during periods of light larger-scale winds; the nocturnal component of the along-slope ...

luminous

Weather; Meteorology

1. In general, pertaining to the emission of visible radiation. 2. In photometry, a modifier used to denote that a given physical quantity, such as luminous emittance, is weighted according to the ...

Kelvin–Helmholtz billows

Weather; Meteorology

1. Cloud forms that arise from Kelvin–Helmholtz waves. 2. Vortical structures that result from the growth and nonlinear development of unstable waves in a shear flow. The billows get their name from ...

jump

Weather; Meteorology

1. A discontinuity in a function or a derivative of a function such that it assumes different values at a point when the point is approached from different directions. 2. See pressure jump.

long shore wind

Weather; Meteorology

1. A damp unpleasant wind that blows from the south in Madras (India). 2. A wind from the northeast at night in Sri Lanka.

landspout

Weather; Meteorology

1. A tornado. 2. Colloquial expression describing tornadoes occurring with a parent cloud in its growth stage and with its vorticity originating in the boundary layer. The parent cloud does not ...