- 行业: Weather
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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, ...
In its most general use, any flow possessing vorticity. More often the term refers to a flow with closed streamlines or to the idealized case in which all vorticity is concentrated in a vortex filament.
Industry:Weather
In oceanography, a three-dimensional, tonguelike intrusion of finite extent in the along- front direction. See interleaving.
Industry:Weather
In mythology, a lightning flash accompanied by a material “bolt” or dart; this is the legendary cause of the damage done by lightning. It is still used as a popular term for a lightning discharge accompanied by thunder.
Industry:Weather
In Mexico and Central America, the main dry season, generally occurring from November through April. See veranillo.
Industry:Weather
In meteorology, the component of the velocity vector along the local vertical.
Industry:Weather
In meteorology, latitudinal, that is, easterly or westerly; opposed to meridional.
Industry:Weather
In meteorology, an elongated area of relatively low atmospheric pressure; the opposite of a ridge. The axis of a trough is the trough line. This term is commonly used to distinguish the previous condition from the closed circulation of a low (or cyclone), but a large-scale trough may include one or more lows, an upper-air trough may be associated with a lower-level low, and a low may have one or more distinct troughs radiating from it. See front, dynamic trough, easterly wave, equatorial wave.
Industry:Weather
In general, an evaluation of one or more meteorological elements that describe the state of the atmosphere either at the earth's surface or aloft. Surface weather observations and upper-air observations are the major categories, with a number of subtypes, but separate from these are such categories as radar meteorological observations, sferics, and solar-radiation observations.
Industry:Weather
In general, the type of climate that produces the vegetation of the tropical and subtropical savanna; thus, a climate with a winter dry season, a relatively short but heavy summer rainy season, and high year-round temperatures.
Industry:Weather
In general, any graph of the vertical distribution of a quantity with respect to either time or space. See cross section, time section, time–height section, profile.
Industry:Weather
