You are here:
CO-OCCURRENCE OF OZONE AND ACIDIC CLOUD WATER IN HIGH-ELEVATION FORESTS
Citation:
Vong, R. AND P. Guttorp. CO-OCCURRENCE OF OZONE AND ACIDIC CLOUD WATER IN HIGH-ELEVATION FORESTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-91/168.
Description:
A chemical climatology for high-elevation forests was estimated from ozone and cloudwater acidity data collected in the eastern United States. esides frequent ozone-only and pH-only single-pollutant episodes, both simultaneous and sequential co-occurrence of ozone and acidic cloudwater were observed a few times each month above cloud base. o-occurrence was observed more frequently at two southern sites than at two northern sites. his co-occurrence represents a multiple chemical stress whose biological implications can now for the first time be studies in controlled exposures of trees.