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troposphere

noun

tro·​po·​sphere ˈtrō-pə-ˌsfir How to pronounce troposphere (audio)
ˈträ-
: the lowest densest part of the earth's atmosphere in which most weather changes occur and temperature generally decreases rapidly with altitude and which extends from the earth's surface to the bottom of the stratosphere at about 7 miles (11 kilometers) high
tropospheric
ˌtrō-pə-ˈsfir-ik How to pronounce troposphere (audio)
ˌträ-
-ˈsfer-
adjective

Example Sentences

Recent Examples on the Web The troposphere is where weather happens, and where eye-searing clouds of smoke and soot circulate even from moderately sized fires. Tribune News Service, oregonlive, 6 Aug. 2022 The troposphere is where weather happens, and where eye-searing clouds of smoke and soot circulate even from moderately sized fires. Tribune News Service, oregonlive, 6 Aug. 2022 Monsoon flows pull moisture up into Arizona, California and Nevada after a shift in the pattern near the upper troposphere and can sometimes last a few days or stretch over longer periods, according to meteorologists. Nathan Solis, Los Angeles Times, 2 Aug. 2022 Burning jet fuel at 35,000 feet sparks a molecular cascade in the troposphere. Wired, 28 July 2022 The troposphere is where weather happens, and where eye-searing clouds of smoke and soot circulate even from moderately sized fires. Tribune News Service, oregonlive, 6 Aug. 2022 The troposphere is where weather happens, and where eye-searing clouds of smoke and soot circulate even from moderately sized fires. Corinne Purtill, Anchorage Daily News, 3 Aug. 2022 The troposphere is where weather happens, and where eye-searing clouds of smoke and soot circulate even from moderately sized fires. Corinne Purtill, Los Angeles Times, 3 Aug. 2022 Solar winds do not heat the troposphere – the lower section of Earth's atmosphere where humans reside, according to researchers. Kate S. Petersen, USA TODAY, 6 Aug. 2022 See More

Word History

Etymology

borrowed from French troposphère, from tropo- tropo- (in sense "change," as the troposphere is where weather changes take place) + -sphère -sphere

Note: The term was introduced, along with stratosphère stratosphere, by the French meteorologist Léon Tesserenc de Bort (1855-1913). Tesserenc de Bort apparently first used them in a paper read to a German meteorological society in Hamburg on September 30, 1908 ("La division de l'atmosphère en troposphère et stratosphère d'après les résultats de l'exploration de la haute atmosphère"). The paper was not subsequently published but is briefly summarized by C. Kassner in "Bericht über die elfte allgemeine Versammlung und Feier des 25-jährigen Bestehens der Deutschen Meteorologischen Gesellschaft zu Hamburg am 28. bis 30. September 1908," Meteorologische Zeitschrift, Band 26, Heft 1 (Januar, 1909), p. 6.

First Known Use

1908, in the meaning defined above

Time Traveler
The first known use of troposphere was in 1908

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