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tropopause
tropopause The boundary separating a lower layer of the atmosphere (troposphere), in which air temperature generally decreases with height, from the layer above (stratosphere), in which temperature remains constant or increases with height. The altitude of the tropopause varies according to sea-surface temperature and season, but also over shorter periods, from an average of 10–12 km over the poles (occasionally descending to 8 km or below) to 17 km over the equator. See also ATMOSPHERIC STRUCTURE.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "tropopause." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "tropopause." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O13-tropopause.html AILSA ALLABY and MICHAEL ALLABY. "tropopause." A Dictionary of Earth Sciences. 1999. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-tropopause.html |
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tropopause
tropopause The boundary separating a lower layer of the atmosphere (troposphere), in which air temperature generally decreases with height, from the layer above (stratosphere), in which temperature remains constant or increases with height. The altitude of the tropopause varies according to sea-surface temperature and season, but also over shorter periods, from an average of 10–12 km over the poles (occasionally descending to 8 km or below) to 17 km over the equator.
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Cite this article
MICHAEL ALLABY. "tropopause." A Dictionary of Ecology. 2004. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "tropopause." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O14-tropopause.html MICHAEL ALLABY. "tropopause." A Dictionary of Ecology. 2004. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-tropopause.html |
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tropopause
tropopause The uppermost limit of the troposphere, at its boundary with the stratosphere. The precise altitude of the tropopause depends on latitude, being around 10 km in temperate regions, but closer to 15 km at the equator. Seasonal variations also occur, the height of the tropopause being greater in summer. Temperatures in the troposphere reach their minimum at the tropopause, typically around −40 °C in the summer.
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Cite this article
"tropopause." A Dictionary of Astronomy. 1997. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "tropopause." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O80-tropopause.html "tropopause." A Dictionary of Astronomy. 1997. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-tropopause.html |
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tropopause
tropopause ˈträpəˌpôz; ˈtrō- the interface between the troposphere and the stratosphere. In polar and temperate regions the tropopause usually occurs at an altitude of about 25,000 to 45,000 feet (eight to fifteen kilometers), while in the tropics it occurs at 55,000 feet (twenty kilometers).
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Cite this article
"tropopause." The Oxford Essential Dictionary of the U.S. Military. 2001. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "tropopause." The Oxford Essential Dictionary of the U.S. Military. 2001. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O63-tropopause.html "tropopause." The Oxford Essential Dictionary of the U.S. Military. 2001. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O63-tropopause.html |
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tropopause
tropopause see atmosphere . |
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Cite this article
"tropopause." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "tropopause." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1E1-X-tropopau.html "tropopause." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-tropopau.html |
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