Regional GHG reduction targets based on effort sharing: a comparison of studies

摘要: Over 40 studies that analyse future GHG emissions allowances or reduction targets for different regions based on a wide range of effort-sharing approaches and long-term concentration stabilization levels are compared. This updates previous work undertaken the Fourth Assessment Report Intergovernmental Panel Climate Change. Regional differ significantly each approach. For example, in Organisation Economic Co-operation Development (OECD) 1990 region, new proposals emphasize equity principles responsibility, capability, need, those equal cumulative per capita (carbon budgets), lead to relatively stringent targets. In order reach low level 450 ppm CO2e, under all effort sharing OECD1990 2030 would be approximately half 2010 with large range, roughly two-thirds Economies Transition (EIT), ro...