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 utilizes 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 ...

A liquid-in-metal thermometer in which mercury is enclosed in a steel envelope. The change in internal pressure caused by the temperature variation is measured by a Bourdon tube that is connected to ...

mercury-in-glass thermometer

Weather; Meteorology

A common type of liquid-in-glass thermometer used, in meteorology, in psychrometers and as a maximum thermometer.

mercury thermometer

Weather; Meteorology

A liquid-in-glass thermometer or liquid-in-metal thermometer using mercury as the liquid.

mercury column

Weather; Meteorology

The column of mercury employed in a mercury barometer, the height of which (inches of mercury) is used as a measure of atmospheric pressure.

mercury barometer

Weather; Meteorology

A glass manometer, employing mercury in its vertical column, that is used to measure atmospheric pressure. The basic construction, unchanged since Torricelli's experiment in 1643, is a glass tube ...