What is ozone?
Ozone is a gas that forms in
the atmosphere when three atoms of oxygen are combined. The chemical symbol for
ozone is (O3). Tropospheric ozone (ozone near the earth’s surface)
is formed by a chemical reaction between oxides of nitrogen (NOx),
and volatile organic compounds (VOC) in the presence of sunlight. As part of
the air we breathe, ozone is odorless and colorless.
Learn
More:
Background
Information on Ozone
Rethinking the Ozone
Problem in Urban and Regional Air Pollution (Chapters 5 &6)