troposphere


troposphere
tropospheric /trop'euh sfer"ik, -sfear"-, troh'peuh-/, adj.
/trop"euh sfear', troh"peuh-/, n. Meteorol.
the lowest layer of the atmosphere, 6 mi. (10 km) high in some areas and as much as 12 mi. (20 km) high in others, within which there is a steady drop in temperature with increasing altitude and within which nearly all cloud formations occur and weather conditions manifest themselves.
[1905-10; TROPO- + SPHERE]

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Lowest region of the atmosphere, bounded by the Earth below and the stratosphere above, with the upper boundary being about 6–8 mi (10–13 km) above the Earth's surface.

The troposphere is marked by decreasing temperature with height, which distinguishes it from the stratosphere. Most clouds and weather systems occur in the troposphere.

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▪ atmospheric region
      lowest region of the atmosphere, bounded by the Earth beneath and the stratosphere above, with its upper boundary being the tropopause, about 10–18 km (6–11 miles) above the Earth's surface. The troposphere is characterized by decreasing temperature with height and is distinguished from the overlying stratosphere by a region of nearly constant temperature in the lower stratosphere. Most of the clouds and weather systems are contained within the troposphere.

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Universalium. 2010.

Look at other dictionaries:

  • troposphère — [ trɔpɔsfɛr ] n. f. • av. 1913; de tropo et (atmo)sphère ♦ Sc. Partie de l atmosphère comprise entre le sol et la stratosphère. Adj. TROPOSPHÉRIQUE . ● troposphère nom féminin Zone la plus basse de l atmosphère des planètes telluriques, qui s… …   Encyclopédie Universelle

  • Troposphere — Troposphère  Ne doit pas être confondu avec Troposphère (fusées). Schéma des couches de l atmosphère (à l echelle). La stratosphère ( 50 km) ne compte que pour environ …   Wikipédia en Français

  • troposphere — 1914, from Fr. troposphère, lit. sphere of change, coined by French meteorologist Philippe Teisserenc de Bort (1855 1913) from Gk. tropos a turn, change (see TROPE (Cf. trope)) + sphaira sphere (see SPHERE (Cf. sphere)) …   Etymology dictionary

  • troposphere — [trō′pə sfir΄, träp′əsfir΄] n. [Fr troposphère < Gr tropos, a turning (see TROPE) + Fr sphère (see SPHERE)] the atmospheric zone or shell below the tropopause, characterized by water vapor, vertical winds, weather, and decreasing temperatures… …   English World dictionary

  • troposphere — ► NOUN ▪ the lowest region of the atmosphere, extending from the earth s surface to a height of about 6 10 km (the lower boundary of the stratosphere). DERIVATIVES tropospheric adjective. ORIGIN from Greek tropos turning …   English terms dictionary

  • Troposphere — The troposphere is the lowest portion of Earth s atmosphere. It contains approximately 75% of the atmosphere s mass and almost all of its water vapor and aerosols. The average depth of the troposphere is about 11 km (7 miles) in the middle… …   Wikipedia

  • Troposphère —  Ne doit pas être confondu avec Troposphère (fusées). Schéma des couches de l atmosphère (à l echelle). La stratosphère ( 50 km) ne compte que pour environ 1% de l atmosphère. On considère que l exosphère (observabl …   Wikipédia en Français

  • troposphere — troposfera statusas T sritis radioelektronika atitikmenys: angl. troposphere vok. Troposphäre, f rus. тропосфера, f pranc. troposphère, f …   Radioelektronikos terminų žodynas

  • troposphère — troposfera statusas T sritis radioelektronika atitikmenys: angl. troposphere vok. Troposphäre, f rus. тропосфера, f pranc. troposphère, f …   Radioelektronikos terminų žodynas

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