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1 inversion thermique
атмосферная инверсия
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
atmospheric inversion
A temperature inversion in the atmosphere in which the temperature, instead of falling, increases with height above the ground. With the colder and heavier air below, there is no tendency to form upward currents and turbulence is suppressed. Inversions are often formed in the late afternoon when the radiation emitted from the ground exceeds that received from the sinking sun. Inversions are also caused by katabatic winds, that is cold winds flowing down the hillside into a valley, and by anticyclones. In inversion layers, both vertical and horizontal diffusion is inhibited and pollutants become trapped, sometimes for long periods. Low-level discharges of pollutants are more readily trapped by inversions than high level dischargers, hence the case for high stacks. Furthermore, high level discharges into an inversion tend to remain at a high level because of the absence of vertical mixing. (Source: GILP96)
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Франко-русский словарь нормативно-технической терминологии > inversion thermique
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2 tornade
торнадо
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
tornado
A rapidly rotating column of air developed around a very intense low-pressure centre. It is associated with a dark funnel-shaped cloud and with extremely violent winds (>300km/h) blowing in a counterclockwise spiral, but accompanied by violent downdraughts. The precise mechanisms are not fully understood but the following atmospheric conditions appear to be necessary for tornado development: a layer of warm moist air at low altitude; a layer of dry air at higher altitude with an inversion of temperature at about 1.000 m; a triggering mechanism, usually in the form of an active, intense cold front or solar heating of the ground which will create a vortex. (Source: WHIT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Франко-русский словарь нормативно-технической терминологии > tornade
См. также в других словарях:
atmospheric inversion — Meteorol. inversion (def. 12). * * * … Universalium
atmospheric inversion — Meteorol. inversion (def. 12) … Useful english dictionary
inversion — /in verr zheuhn, sheuhn/, n. 1. an act or instance of inverting. 2. the state of being inverted. 3. anything that is inverted. 4. Rhet. reversal of the usual or natural order of words; anastrophe. 5. Gram. any change from a basic word order or… … Universalium
Inversion — In*ver sion, n. [L. inversio: cf. F. inversion. See {Invert}.] [1913 Webster] 1. The act of inverting, or turning over or backward, or the state of being inverted. [1913 Webster] 2. A change by inverted order; a reversed position or arrangement… … The Collaborative International Dictionary of English
inversion — [in vʉr′zhən, in vʉr′shən] n. [L inversio < inversus, pp. of invertere] 1. an inverting or being inverted 2. something inverted; reversal 3. Chem. a) a chemical change in which an optically active substance is converted into another substance… … English World dictionary
Atmospheric dispersion modeling — Industrial air pollution source Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere. It is performed with computer programs that solve the mathematical equations and algorithms… … Wikipedia
Inversion (meteorology) — In meteorology, an inversion is a deviation from the normal change of an atmospheric property with altitude. It almost always refers to a temperature inversion, i.e., an increase in temperature with height, or to the layer within which such an… … Wikipedia
Atmospheric duct — Fata Morgana of Farallon Islands with clearly seen duct In telecommunication, an atmospheric duct is a horizontal layer in the lower atmosphere in which the vertical refractive index gradients are such that radio signals (and light rays) (a) are… … Wikipedia
Atmospheric convection — Conditions favorable for thunderstorm types and complexes Atmospheric convection is the result of a parcel environment instability, or temperature difference, layer in the atmosphere. Different lapse rates within dry and moist air lead to… … Wikipedia
inversion — In meteorology, a departure from the usual decrease or increase with altitude of the value of an atmospheric property. Also, the layer through which this departure occurs, called the inversion layer, or the lowest altitude at which the departure… … Aviation dictionary
atmospheric phenomenon — noun a physical phenomenon associated with the atmosphere • Hypernyms: ↑physical phenomenon • Hyponyms: ↑cloud, ↑air pocket, ↑pocket, ↑air hole, ↑aurora, ↑condensation, ↑ … Useful english dictionary