- Industry: Weather
- Number of terms: 60695
- Number of blossaries: 0
- Company Profile:
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, ...
The increase in speed of air that accelerates over the tops of hills due to the Bernoulli effect divided by the ambient wind speed well upwind of the hill.
Industry:Weather
The imaginary surface that everywhere coincides with the piezometric head of the water in the aquifer. In areas of artesian ground water, it is above the land surface.
Industry:Weather
The horizontal discontinuity in temperature and humidity that marks the leading edge of the intrusion of cooler, more moist marine air associated with a sea breeze. It might also have a wind shift, pollution confluence, and enhanced cumulus clouds along its leading edge.
Industry:Weather
The hydrograph, for a given river basin, that would theoretically result from a continuous, constant excess rainfall rate per specified period ''T'' resulting in a runoff volume of 1. 00 unit depth (e.g., 1. 00 cm or 1. 00 in. ) over the basin for each period T. The curve has a characteristic S-shaped rising limb, reaching a constant final discharge rate equivalent to the constant excess rainfall rate multiplied by the area of the basin. An S-curve is constructed from a series of unit hydrographs of period ''T'' by the simple process of successive displacement by ''T'' and summing up the ordinates (discharge values). In theory, the unit hydrographs for storms of any duration may be derived from the resulting S-curve.
Industry:Weather
The holding pattern of aircraft awaiting their turn to approach and land at an airport. Stacking aircraft one above the other has to be employed when weather conditions interfere with normal VFR direct landing approach to the extent that aircraft arrive at a more rapid rate than they are able to approach and land. Stacked aircraft are usually separated by a fixed altitude, and when the bottom aircraft lands all those in the stack drop down one altitude separation. Newly arrived aircraft take a place at the top of the stack.
Industry:Weather
The frequency (period/wavelength) of waves represented by a peak (maximum energy) in the wave spectrum; sometimes known as the dominant frequency.
Industry:Weather
The height above hilltop experiencing the greatest increase in wind speed due to the Bernoulli effect, as compared to the upstream value of the wind speed at the same height.
Industry:Weather
