Meteorology

Meteorology

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

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Meteorology

subtropical easterlies index

Weather; Meteorology

A measure of the strength of the easterly surface wind between the latitudes of 20° and 35°N. The index is computed from the average sea level pressure difference between these latitudes and is ...

A measure of the extinction due to scattering of monochromatic radiation as it traverses a medium containing scattering particles. Usually expressed as a volume scattering coefficient with units of ...

rainfall rate

Weather; Meteorology

A measure of the intensity of rainfall by calculating the amount of rain that would fall over a given interval of time if the rainfall intensity were constant over that time period. The rate is ...

Southern Oscillation index

Weather; Meteorology

A measure of the state of the Southern Oscillation. A common index used for this purpose is the sea level pressure at Tahiti minus the sea level pressure at Darwin, Australia, divided by the standard ...

phase spectrum

Weather; Meteorology

A measure of the relative phase between two meteorological variables, segregated by wavelength. It is the phase difference for any frequency between two time series that yields the greatest ...

receiver (noise) temperature

Weather; Meteorology

A measure of the noise power density at the output of a radio or radar receiver due to internally generated noise and passive losses in the receiver. In particular, the receiver temperature ''T r '' ...

residence time

Weather; Meteorology

A measure of the length of time that molecules will stay in a chamber or region. It can be estimated by dividing the volume of a chamber or region by the volumetric flow rate through it. For example, ...