Meteorology

Meteorology

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

Industry: Weather

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Meteorology

Nowcast

Weather; Meteorology

A short-term weather forecast, generally for the next few hours. The U. S. National Weather Service specifies zero to three hours, though up to six hours may be used by some. Compare short-range ...

Normal modes

Weather; Meteorology

A solution of the tangent linear model of a set of differential equations. Usually a wave type structure is assumed of the form ''e ik(x − t) '' and solutions with imaginary ''k'' are considered.

Normal population

Weather; Meteorology

In statistical terminology, a collection of quantities having a normal distribution.

A method that uses model normal modes to adjust the initial conditions of an NWP model so that high-frequency oscillations are removed from the subsequent forecast. The most successful procedure is ...

Noise factor

Weather; Meteorology

A number by which the performance of a radio receiver can be specified. Essentially, the noise figure is the ratio of the noise generated by the actual receiver to the noise output of an "ideal" ...

Normal barometer

Weather; Meteorology

A barometer of such accuracy that it can be used for the determination of pressure standards. An instrument such as a large-bore mercury barometer is usually used as a normal barometer.