stratosphere

stratosphere
—stratospheric /strat'euh sfer"ik, -sfear"-/, stratospherical, adj.
/strat"euh sfear'/, n.
1. the region of the upper atmosphere extending upward from the tropopause to about 30 miles (50 km) above the earth, characterized by little vertical change in temperature.
2. (formerly) all of the earth's atmosphere lying outside the troposphere.
3. any great height or degree, as the highest point of a graded scale.
[1905-10; STRAT(UM) + -O- + SPHERE]

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Layer of the atmosphere that is located above the troposphere.

The stratosphere extends from a lower boundary of about 11 mi (17 km) altitude to an upper boundary (the stratopause) at about 30 mi (50 km). The ozone layer is a part of the stratosphere.

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      layer of the Earth's atmosphere lying between the troposphere and the mesosphere. The lower portion of the stratosphere is nearly isothermal (a layer of constant temperature), whereas temperatures in its upper levels increase with altitude. The stratosphere extends from the tropopause at about 6 to 17 km (4 to 11 miles) altitude to its upper boundary (the stratopause) at about 50 km (30 miles), and it also contains the ozone layer. See atmosphere.

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Universalium. 2010.

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