. Annual program report, 1990. Acidic Precipitation in Ontario Study; Acid precipitation (Meteorology); Acid pollution of rivers, lakes, etc; Acid rain. S02 (1,000 metric tons). 71 72 73 74 76 76 77 78 79 80 81 82 83 84 85 86 87 88 89 Year Major Sectors Others \^'--y^^ Utilities HI Non-Fe Smelters Figure 2 1971-89 Ontario Total SOj Emissions provincial total. With the introduction of more stringent emission standards for light duty vehicles, NO, emissions are expected to decline in the period to 2000 in spite of the expected increase in vehicle population. Emission trends of SOj and NO, in Nor
. Annual program report, 1990. Acidic Precipitation in Ontario Study; Acid precipitation (Meteorology); Acid pollution of rivers, lakes, etc; Acid rain. S02 (1,000 metric tons). 71 72 73 74 76 76 77 78 79 80 81 82 83 84 85 86 87 88 89 Year Major Sectors Others \^'--y^^ Utilities HI Non-Fe Smelters Figure 2 1971-89 Ontario Total SOj Emissions provincial total. With the introduction of more stringent emission standards for light duty vehicles, NO, emissions are expected to decline in the period to 2000 in spite of the expected increase in vehicle population. Emission trends of SOj and NO, in North America for the period 1980-1985 were also prepared for the Federal-Provincial Research Monitoring Coordination Committee (RMCC) 1990 Assessment Report during FY 1989/90. With reference to the global warming issue, a preliminary COj emissions by sectors inventory for Ontario was derived for 1987 (see Figure 3). B. MODELLING Numerical models have been used to quantify the source-receptor relationships that exist between acidic precursors emissions and final acid loadings. Linear and comprehensive models have been developed with different applications in mind. Linear models have undergone extensive evaluations (, the Memorandum of Intent between Canada and the in 1980 and the International Sulphur Deposition Model Evaluation in 1986). Comprehensive models like ADOM (Acidic Deposition and Oxidant Model) have also been evaluated for periods representing. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Acidic Precipitation in Ontario Study; Ontario. Ministry of the Environment. [Toronto] : Ministry of the Environment, A. P. I. O. S. Coordination Office
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