- 行业: 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, ...
A branch of meteorology that deals with the description of the atmosphere as a whole and its various phenomena, without going into theory.
Industry:Weather
1. In general, a point or limited area of locally lower elevation in a particular surface. 2. In meteorology, an area of low pressure; a low or trough. This is usually applied to a certain stage in the development of a tropical cyclone, to migratory lows and troughs, and to upper-level lows and troughs that are only weakly developed. This use of the term is most common in the European literature. See V-shaped depression. 3. Same as depression angle. 4. See wet-bulb depression, dewpoint spread.
Industry:Weather
The southbound equatorial crossing of a polar-orbiting satellite, given in degrees longitude, date, and universal time (UTC) for any given orbit or pass; the point at which a satellite crosses the equatorial plane heading south.
Industry:Weather
In a theory of the rainbow that approximates the behavior of light as a series of rays, the Descartes ray is the one that undergoes a minimum angle of deviation as a result of being refracted as it enters the drop, reflected one or more times within the drop, and then refracted again as it leaves. The significance of the Descartes ray (in this model) is that the radiance is markedly greater than that of neighboring rays. The Descartes ray is thus useful for providing an approximate rainbow position and color order.
Industry:Weather
The maximum velocity of a sharp-edged gust that would produce a given acceleration on a particular airplane flown in level flight at the design cruising speed of the aircraft and at a given air density. The ratio of derived gust velocity to effective gust velocity is not constant but is of the order of 2:1.
Industry:Weather
A widespread convectively induced straight-line windstorm. Specifically, the term is defined as any family of downburst clusters produced by an extratropical mesoscale convective system. Derechos may or may not be accompanied by tornadoes. Such events were first recognized in the Corn Belt region of the United States, but have since been observed in many other areas of the midlatitudes.
Industry:Weather
A method for computing the discharge in a channel by first determining the areas of the depth–velocity curves in each vertical cross section, then plotting the area of the curve of those areas over the verticals along the water surface line.
Industry:Weather
A methodology that obtains a representative discharge- weighted water–sediment sample over stream verticals, except in an unmeasured zone near the streambed, by continuously cumulatively collecting a portion of the water–sediment mixture as the sampler traverses the vertical at an approximately constant transit rate.
Industry:Weather
A search algorithm that extends the current path as far as possible before backtracking to the last choice point and trying the next alternative path. Depth-first search generally reaches a satisfactory solution more rapidly than breadth first, an advantage when the search space is large. However, unlike breadth first, it does not guarantee that the optimal solution has been found. Compare breadth-first search.
Industry:Weather
