Mapping the potential acidic deposition in southwestern California using ambient air concentrations of acid precursors Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_projects/9593tv84b

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  • Attempts to map the distribution of acidic deposition have been inadequate, particularly in areas of seasonal or limited rainfall. Ambient air concentrations of acid precursors may be used to monitor and map the distribution of potential acidic deposition. A network of stations in California currently monitor these ambient air concentrations. Maps were produced from these data showing the distribution of acid precursors in southwestern California in 1979. Graphs were prepared which describe the monthly and annual variations in the ambient air concentrations of acid precursors. The greatest potential for acidic deposition is in the Los Angeles and Bakersfield areas. Oxides of nitrogen dominate the ambient air concentrations of acid precursors with nitric oxide having the most influence on trends. The heaviest potential fallout of acid precursors occurs during the winter months. No increase in the presence of acid precursors in the ambient air was noticeable in the 1970s. Provisions should be made to increase the number of .locations of monitoring stations, so that accurate maps may be created and more efficient monitoring may take place.
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