Table 4.3a. Sulphur dioxide emission estimates from different sources.

. Emissions (megatonnes) .
Region 1990 2000 2010 2050 Data Source
Europe 38 22 14 n.a. -1.2
44 30 27 22 -3
44 46 63 71 -4
46 39 38 48 -6
Asia 34 53 78 n.a. -1
35 n.a. n.a. n.a. -5
35 53 77 84 -3
35 53 77 162 -4
31 36 42 75 -6
USA 21 15 14 n.a. -1
22 17 15 13 -3
22 30 37 32 -4
21 21 20 18 -6
China 22 34 48 n.a. -1
19.5 n.a. n.a. n.a. -5
23 34 49 46 -3
23 34 49 92 -4
21 23 26 41 -6
India 4.5 6.6 10.9 n.a. -1
3.8 n.a. n.a. n.a. -5
3.9 6.4 11.3 21.7 -3
3.9 6.4 11.3 43.5 -4
3.2 3.9 5.1 13.4 -6
Other 7.5 12.4 19.1 n.a. -1

Sources:
1. Foell, W., M. Amann, G. Carmichael, M. Chadwick, J.-P. Hettelingh, L. Hordijk, and D. Zhao. 1995a. RAINS-Asia: An Assessment Model for Air Pollution in Asia. World Bank. Washington.
2. ECE/EB.AIR/40.1994. Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution on Further Reduction of Sulphur Emissions. United Nations Economic Commission for Europe. Geneva.
3. IMAGE 2.1 Baseline-A, with sulphur dioxide protocol.
4. IMAGE 2.1 Baseline-A without sulphur dioxide protocol.
5. Barrett, M. 1992. Environmental impacts of fossil fuels. In: Ramani, K.V., P. Hills, G. George (eds.). Burning Questions: Environmental Limits to Energy Growth in Asian-Pacific Countries During the 1990s, APDC/WWF, Asian and Pacific Development Centre. Kuala Lumpur, Malaysia.
6. Matsuoka, Y. 1992. Future projections of global anthropogenic sulfur emissions and their environmental effects. Environmental Systems Research, 22:359-368. (The Asian Pacific Integrated Model - AIM.)
Note:
n.a. = not available.