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EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE

Definition:
Ozone (O3) is a molecule that consists of three oxygen atoms bonded
together. The ozone layer in the stratosphere absorbs UV radiation and
creates a warm layer of air high in the stratosphere. Ozone that is
present in the troposphere is mostly a result of anthropogenic pollution
and therefore higher concentrations are found in urban areas. Ozone is
involved with NOx in the photochemical production of many of the
constituents of pollution environments (see nitrogen oxides and hydroxyl
definitions) [Chemical and Engineering News; v72; 6-7; 1994.] [Aviation
Week and Space Technology; v140; 20-21; 1994.]


Reference:
Atmospheric and Air Chemistry Glossary from the Sam Houston State University.
http://www.shsu.edu/~chemistry/Glossary/glos.html