5 Terms
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Meteorology
A database of terms pertaining to the scientific study of the atmosphere.
Industry: Weather
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Meteorology
Nocturnal boundary layer
Weather; Meteorology
The cool layer of air adjacent to the ground that forms at night. At night under clear skies, radiation to space cools the land surface, which in turn cools the adjacent air through processes of ...
Noise threshold
Weather; Meteorology
The power level of a signal below which noise is likely to obscure the signal and above which the signal is discernible.
Nomogram
Weather; Meteorology
The graphical representation of an equation of three variables ''f''(''u, v, w'') = 0, by means of three graphical scales (not necessarily straight), arranged in such a manner that any straight ...
Noise temperature
Weather; Meteorology
A measure of the noise power of a device or circuit. The noise temperature is the temperature of a resistor that has noise power equal to that of the device or circuit. Specifically, the noise ...
Nondimensional equation
Weather; Meteorology
An equation that is independent of the units of measurement as it only involves nondimensional numbers, parameters, and variables. This is usually the result of dimensional analysis.
Nondimensional number
Weather; Meteorology
A number with a value that is independent of the units of measurement. Dimensionless numbers often arise from dimensional analysis and include common quantities such as the Reynolds number, Rossby ...
