Abstract |
The status of knowledge on photochemical ozone formation and the effects of nitrogen oxides and peroxyacyl nitrates on such formation has been evaluated. The literature is reviewed on nonurban ozone and nitrogen oxide concentration distributions, ozone lifetimes, nitrogen oxide lifetimes, and ozone formation in plumes as related to nitrogen oxide. The modeling approaches applied to ozone formation with urban plumes, power plant plumes, high pressure systems, and during longer-range transport of ozone formation associated with reactions of natural hydrocarbons and nitrogen oxide near ground level as well as photochemical ozone formation associated with reactions of carbon monoxide and more persistent organic species with nitrogen oxides in the free troposphere are considered. Correlation studies and laboratory measurements relating ozone in nonurban locations to precursors also are evaluated. |