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[C-4.1 Studies to Estimate the Projection of Emission and its Distribution of Acid Rain Precursors in East Asia]

[Contact Person]

Tsuguo Mizoguchi
Director, Department of Community Environmental Sciences
The Inst. of Public Health, Ministry of Welfare
4-6-1 Shirokanedai, Minato-ku, Tokyo 108 Japan
Tel +81-3-3446-7165, Fax +81-3-3446-7165

[Total Budget for FY1991-1993]

27,077,000 Yen

[Abstract]

　In order to prevent the damage with acid precipitation in Asia, the evaluation of status and future emission amount of SO₂, NOx and CO which diminish the oxidation of SO₂ and NOx, and also neutralizing chemicals such as NH₃ are necessary. The anthropogenic emissions of SO₂ and NOx with 1 x 1 longitude latitude resolution for Asian countries have been calculated for 1975, 1980, 1985, 1986 and 1987 based on fuel consumption, sulfur content in fuels and emission factors for used fuels in each emission category. Locations of major power plants, iron and steal industry, chemical and petrochemical industry, oil refineries and others have been identified for improving accuracy of the allocation of emissions to each grid. Emission from transport, residential and commercial sectors were allocated according to population. Grided NH₃ emission flux of cattle, pig and fertilizer is obtained as 10.6, 4.4, 4.9ton/year, respectively. Taking the consumption amount of coal at each sector in the literature, total CO emissions in China due to fuel combustion were estimated. The results showed that most CO emission(89%) due to coal combustion came from commercial and domestic uses which occupied ca.22% of total consumption of coal in 1988.

[Key Words]

East Asia, Emission Inventory, SO₂, NOx, Ammonia