- Industry: Weather
- Number of terms: 60695
- Number of blossaries: 0
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The American Meteorological Society promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences and the advancement of their professional applications. Founded in 1919, AMS has a membership of more than 14,000 professionals, ...
Usually defined as the ratio of wave height to wavelength, but occasionally defined as the amplitude multiplied by the wavenumber of the wave. See wave steepness.
Industry:Weather
Usually same as autocorrelation, but occasionally used to designate lagged correlations between two separate series of observations, for example, the correlation between ''x<sub>i</sub>'', and ''y<sub>i''+1</sub> in the series ''x''<sub>1</sub>, ''x''<sub>2</sub>,. . . And ''y''<sub>1</sub>, ''y''<sub>2</sub>,. . . . The serial correlation coefficient is the product- moment correlation coefficient for the lagged correlations or for the correlations between series.
Industry:Weather
Usually, the time required for a pulse to increase from 10% of its final value to 90% of its final value. Rise time is less frequently measured between the 5% and 95% points or the 1% and 99% points. Rise time is used to specify the transient response of an instrument, and is similar to its time constant, relaxation time, or response time, although these latter terms use (1 − ''e''<sup>−1</sup>), or about 63%, as the fractional change in state over which time is measured, beginning at an initial value. For example, if a step increase of 10° is applied to a thermometer registering 0° with a rise time of 50 s, the thermometer would increase from 1° to 9° in 50 s. Note that nothing is specified concerning the time required for the instrument to respond to the first or last 10%. See'' also'' time lag.
Industry:Weather
Vectors that maximize the ratio between the initial norm of a perturbation and the final norm of the perturbation after integration with the tangent linear model. See singular value decomposition.
Industry:Weather
Vertical or inclined trails or wisps of water or ice particles falling out of a cloud but evaporating before reaching the earth's surface in the dry layer beneath the cloud. See virga.
Industry:Weather
Vertical projection of the actual flight path of an aerial or space vehicle onto the surface of the earth or other body. See ground track.
Industry:Weather
Very old sea ice trapped in fjords. It resembles glacier ice because snowfall and snowdrifts contribute to its formation.
Industry:Weather
Violent northeast winds along the western shore of the Black Sea near the Bosporus in Russia.
Industry:Weather
