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・ Trotskyist Fraction – Fourth International
・ Trotskyist International Liaison Committee
・ Trotskyist League
・ Trotskyist League (US)
・ Trotskyist Organization of the United States
・ Trott
・ Troponje
・ Troponymy
・ Tropopause
・ Tropopterus
・ Tropos Networks
・ Troposkein
・ Troposphere
・ Troposphere (rocket family)
・ Tropospheric Emission Spectrometer
Tropospheric ozone
・ Tropospheric ozone depletion events
・ Tropospheric propagation
・ Tropospheric scatter
・ Tropospheric wave
・ Tropotianka
・ Tropovci
・ Tropoxane
・ Troppo Architects
・ Troppo forte
・ Troppo tempo
・ Tropy Elbląskie
・ Tropy Sztumskie
・ Tropylium cation
・ Tropylium tetrafluoroborate


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Tropospheric ozone : ウィキペディア英語版
Tropospheric ozone

Ozone (O3) is a constituent of the troposphere (it is also an important constituent of some regions of the stratosphere commonly known as the ozone layer). The troposphere extends from the Earth's surface to between 12 and 20 kilometers above sea level and consists of many layers. Ozone is more concentrated above the mixing layer, or ground layer. Ground-level ozone, though less concentrated than ozone aloft, is more of a problem because of its health effects.
Photochemical and chemical reactions involving it drive many of the chemical processes that occur in the atmosphere by day and by night. At abnormally high concentrations brought about by human activities (largely incomplete combustion of fossil fuels, such as gasoline, diesel, etc.), it is a pollutant, and a constituent of smog. Many highly energetic reactions produce it, ranging from combustion to photocopying. Often laser printers will have a smell of ozone , which in high concentrations is toxic. Ozone is a powerful oxidizing agent readily reacting with other chemical compounds to make many possibly toxic oxides.
Tropospheric ozone is a greenhouse gas and initiates the chemical removal of methane and other hydrocarbons from the atmosphere. Thus, its concentration affects how long these compounds remain in the air.
== Measurement ==
Satellites are able to measure tropospheric ozone.()() Measurements specifically of ground-level ozone require ''in situ'' monitoring technology.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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