Note: This is the 1997 edition of UNEP's Global Environment Outlook. If you are interested in more recent information, please see the 2000 and 2002 editions.

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.