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627774 
Journal Article 
Mapping ozone in the eastern United States 
Zurbenko, IG; Rao, ST; Henry, RF 
1995 
0 
EM: Environmental Manager
ISSN: 1088-9981
EISSN: 1875-4236 
1 
24-30 
It is well-known that meteorological conditions play a dominant role in the production and accumulation of ground-level ozone, and that the meteorological signal must be separated from the chemical signal in order to relate changes in ozone to changes in the emissions of ozone precursors. Policymakers need geographical maps of changes in ozone that are not attributable to meteorological fluctuations in order to assess the impact of their regulatory programs on ambient ozone air quality. This paper presents geographical maps of ozone trends from 1980-1992 for the eastern United States obtained through space-time analyses of both temperature and ozone data. The results indicate that there has been an improvement in ambient ozone air quality in the northeastern United States in the post-1988 period; it is plausible that controls on fuel volatility implemented in the Northeast in 1989 and vehicle turnover are responsible for this improvement.