Ozonosphere: Difference between revisions
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{{Term | |||
|Display title=ozonosphere | |||
{{ | |Definitions={{Definition | ||
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|Meaning=(''Also called'' ozone layer.) A region of the [[atmosphere]] from about 15 to 60 km (roughly the extent of the [[stratosphere]]) that contains large concentrations of [[ozone]]. | |||
|Explanation=The ozone concentration peaks at about 10<sup>13</sup> molecules per cubic centimeter near 20 km, while the [[mixing ratio]] peaks at slightly higher [[altitude]] (about 9–10 ppm at 30 km). Ozone in this region is produced from [[photolysis]] of O<sub>2</sub> molecules and is destroyed by reactions involving the oxides of [[nitrogen]], chlorine, and [[hydrogen]]. Because of the strong [[UV]] absorption [[spectrum]] of ozone, the ozone layer effectively limits penetration of UV radiation to the earth's surface to wavelengths longer than 290 nm.<br/> Crutzen, P. J. 1971. The influence of nitrogen oxides on the atmospheric ozone content. Quart. J. Roy. Meteor. Society. 96 (408). 320–325. <br/> Crutzen, P. J. 1971. Ozone production rates in the oxygen–hydrogen–nitrogen atmosphere. J. Geophys. Res. 76. 7311–7327. <br/> Molina, M. J., and F. S. Rowland 1974. Stratospheric sink for chlorofluorocarbons: Chlorine atom catalyzed destruction of ozone. Nature. 249. p. 890. <br/> Stolarski, R. S., and R. J. Cicerone 1974. Stratospheric chlorine: A possible sink for ozone. Can. J. Chem.. 52. 1610–1615. <br/> Johnston, H. S. 1971. Reduction of stratospheric ozone by nitrogen oxide catalysts from supersonic transport exhaust. Science. 173. p. 517. | |||
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Latest revision as of 03:33, 27 March 2024
The ozone concentration peaks at about 1013 molecules per cubic centimeter near 20 km, while the mixing ratio peaks at slightly higher altitude (about 9–10 ppm at 30 km). Ozone in this region is produced from photolysis of O2 molecules and is destroyed by reactions involving the oxides of nitrogen, chlorine, and hydrogen. Because of the strong UV absorption spectrum of ozone, the ozone layer effectively limits penetration of UV radiation to the earth's surface to wavelengths longer than 290 nm.
Crutzen, P. J. 1971. The influence of nitrogen oxides on the atmospheric ozone content. Quart. J. Roy. Meteor. Society. 96 (408). 320–325.
Crutzen, P. J. 1971. Ozone production rates in the oxygen–hydrogen–nitrogen atmosphere. J. Geophys. Res. 76. 7311–7327.
Molina, M. J., and F. S. Rowland 1974. Stratospheric sink for chlorofluorocarbons: Chlorine atom catalyzed destruction of ozone. Nature. 249. p. 890.
Stolarski, R. S., and R. J. Cicerone 1974. Stratospheric chlorine: A possible sink for ozone. Can. J. Chem.. 52. 1610–1615.
Johnston, H. S. 1971. Reduction of stratospheric ozone by nitrogen oxide catalysts from supersonic transport exhaust. Science. 173. p. 517.
