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GROUND-LEVEL OZONE

Statistics Directorate    
French Equivalent: Ozone troposphérique

Definition:
Ground—level ozone is ozone present as a secondary pollutant in the lower atmosphere, where its formation can be enhanced by other pollutants. It is highly toxic at levels above 0.1 parts per million (p.p.m.).

Source Publication:
Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997.

Cross References:
Ozone

Statistical Theme: Environmental statistics

Created on Tuesday, September 25, 2001

Last updated on Monday, November 12, 2001