Meteorology

Meteorology

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

Industry: Weather

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Meteorology

Zero-order closure

Weather; Meteorology

An approximation to turbulent flow that utilises empirical diagnostic relationships for the mean variables such as wind speed and temperature. Because these are diagnostic equations rather than ...

Zenithal rains

Weather; Meteorology

In the Tropics or subtropics, rainy seasons that recur annually or semiannually at about the time that the sun is most nearly overhead (at zenith). Within a few degrees of the equator, two such ...

Zenith distance

Weather; Meteorology

The angular distance of any celestial object from a given observer's zenith, measured along the great circle of the celestial sphere from the zenith to the object; the complement of the elevation ...

Zero curtain

Weather; Meteorology

The layer of ground, between the active layer and permafrost, where the temperature remains nearly constant at 0°C.

Zigzag lightning

Weather; Meteorology

Ordinary lightning of a cloud-to-ground discharge that appears to have a single, but very irregular, lightning channel.

Nonharmonic tidal analysis

Weather; Meteorology

Analysis and prediction using traditional methods such as the local establishment. See lunitidal interval.

Nondispersive infrared spectrometry

Any form of analysis by infrared absorption that does not rely on a monochromator to separate the wavelengths of the radiation. If the target molecule is the only one known to absorb strongly in the ...