- 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, ...
Occurs when strong synoptic-scale winds blow over a mountain ridge top, where the winds are trapped below a strong temperature inversion located at an altitude just above the ridge top. The resulting fall winds on the lee side of the ridge are trapped close to the surface and can destroy buildings and blow down trees. See'' also'' chinook, foehn.
Industry:Weather
A layer of air of order tens of meters thick adjacent to the ground where mechanical (shear) generation of turbulence exceeds buoyant generation or consumption. In this layer Monin–Obukhov similarity theory can be used to describe the logarithmic wind profile. The friction velocity ''u''<sub>*</sub> is nearly constant with height in the surface layer. Compare atmospheric boundary layer, radix layer, Obukhov length, aerodynamic roughness length.
Industry:Weather
In British climatology, a period of 24 hours, normally commencing at 0900 UTC, in which at least 0. 01 in. Or 0. 2 mm of precipitation is recorded. It is the practice of the U. S. National Weather Service to use phrases that are more self-defining, such as “day with measurable precipitation” or “day with 0. 01 inch or more” (of precipitation).
Industry:Weather
In British climatology, a period of 24 hours, normally commencing at 0900 UTC, in which at least 0. 01 in. Or 0. 2 mm of precipitation is recorded. It is the practice of the U. S. National Weather Service to use phrases that are more self-defining, such as “day with measurable precipitation” or “day with 0. 01 inch or more” (of precipitation).
Industry:Weather
A coarse, granular, wet snow, resembling finely chopped melted ice, generally found in the spring.
Industry:Weather
The state of an unsaturated layer or column of air in the atmosphere with a wet-bulb potential temperature (or equivalent potential temperature) that decreases with elevation. If such a column is lifted bodily until completely saturated, it will become unstable (i.e., its temperature lapse rate will exceed the saturation-adiabatic lapse rate) regardless of its initial stratification.
Industry:Weather
Radiation scattered out of the direct solar beam is often forward peaked, especially when the scattering is caused by dust. Therefore, the scattered radiation is concentrated at small angles close to the sun. This aureole phenomenon provides a sensitive measure of dust loading in the atmosphere.
Industry:Weather
The designation by a dimensionless integer series (1, 2, 3,. . . ) of the relative position of stream segments in the network of a drainage basin, with 1 designating a stream with no tributaries.
Industry:Weather
The designation by a dimensionless integer series (1, 2, 3,. . . ) of the relative position of stream segments in the network of a drainage basin, with 1 designating a stream with no tributaries.
Industry:Weather
Ice, on a body of water, that remains as an unbroken surface when the water level drops so that a cavity is formed between the water surface and the ice.
Industry:Weather
