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TS (2)
- Usado para
- thunderstorm
- Definição1
- Sudden electrical discharges manifested by a flash of light (lightning) and a sharp or rumbling sound (thunder). Thunderstorms are associated with convective clouds (Cumulonimbus) and are, more often, accompanied by precipitation in the form of rainshowers or hail, or occasionally snow, snow pellets, or ice pellets.
- Fonte1
- WORLD METEOROLOGICAL ORGANIZATION. International meteorological vocabulary. 2nd ed. Geneva, 1992. (WMO, n.182). Disponível em: < https://library.wmo.int/index.php?lvl=notice_display&id=220#.XeauGOhKiUk >. Acesso em: 11 dez. 2019.
- Definição2
- In general, a local storm, invariably produced by a cumulonimbus cloud and always accompanied by lightning and thunder, usually with strong gusts of wind, heavy rain, and sometimes with hail. It is usually of short duration, seldom over two hours for any one storm. A thunderstorm is a consequence of atmospheric instability and constitutes, loosely, an overturning of air layers in order to achieve a more stable density stratification. A strong convective updraft is a distinguishing feature of this storm in its early phases. A strong downdraft in a column of precipitation marks its dissipating stages. Thunderstorms often build to altitudes of 40 000–50 000 ft in midlatitudes and to even greater heights in the Tropics; only the great stability of the lower stratosphere limits their upward growth. A unique quality of thunderstorms is their striking electrical activity. The study of thunderstorm electricity includes not only lightning phenomena per se but all of the complexities of thunderstorm charge separation and all charge distribution within the realm of thunderstorm influence.
- Fonte2
- AMERICAN METEOROLOGICAL SOCIETY. Glossary of meteorology. [S.l., última modificação 05 oct. 2015]. Disponível em: < http://glossary.ametsoc.org/wiki/Main_Page >. Acesso em: 11 dez. 2019.
- Definição3
- A local storm produced by a cumulonimbus cloud and accompanied by lightning and thunder.
- Fonte3
- UNITED STATES. National Weather Service. National weather service glossary. [20-?]. In: ______. [Homepage]. [Silver Spring, MD, 20-?]. Disponível em: < https://forecast.weather.gov/glossary.php >. Acesso em: 11 dez. 2019.
- Fonte4
- WORLD METEOROLOGICAL ORGANIZATION. Guide to meteorological instruments and methods of observation. Geneva, 2012. (WMO, n.8).
- Contexto
- Current techniques for determining the various characteristics of thunderstorms would make it possible to define a useful descriptive and concise measure (“index”) of thunderstorm activity, but no such general index exists yet.
- Subárea1
- Aeronautical Meteorology