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

This executive summary evaluates over 40 studies on regional GHG reduction targets, highlighting how different effort-sharing approaches and equity principles lead to significantly different emissions allowances. It specifically examines targets for a 450 ppm CO2e stabilization level by 2030 and 2050 across various global regions and argues for more in-depth modelling to inform the 2015 international climate change agreement.

• Regional GHG reduction targets vary significantly depending on the effort-sharing approach used. In the OECD 1990 region, targets are most stringent when based on carbon budgets (equal cumulative per capita emissions) or equity principles of responsibility, capability, and need.
• To achieve a low concentration stabilization level of 450 ppm CO2e by 2030, emissions allowances relative to 2010 levels would be approximately half for OECD1990, roughly two-thirds for Economies in Transition (EIT), at or slightly below 2010 levels for Asia, slightly above 2010 levels for the Middle East and Africa, and well below 2010 levels for Latin America.
• By 2050, under a 450 ppm CO2e stabilization level, allowances for OECD1990 and EIT would be a fraction of 2010 emissions, while Asia would be at approximately half and Latin America possibly less than half of 2010 levels.
• The results of effort-sharing approaches are primarily driven by the implementation of equity principles, the chosen criteria, the stabilization level, and the global emissions pathway, though current literature only addresses a small fraction of possible allocation approaches.

APA

NewClimate Institute (2013). Regional GHG reduction targets based on effort sharing: a comparison of. http://www.newclimate.org/resources/publications/regional-ghg-reduction-targets-based-on-effort-sharing-a-comparison-of

Chicago

NewClimate Institute. Regional GHG reduction targets based on effort sharing: a comparison of. 2013. http://www.newclimate.org/resources/publications/regional-ghg-reduction-targets-based-on-effort-sharing-a-comparison-of.

Wikipedia

{{cite report |author=NewClimate Institute |title=Regional GHG reduction targets based on effort sharing: a comparison of |date=1 October 2013 |url=http://www.newclimate.org/resources/publications/regional-ghg-reduction-targets-based-on-effort-sharing-a-comparison-of |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{newclimateinstitute2013regional, author = {{NewClimate Institute}}, title = {{Regional GHG reduction targets based on effort sharing: a comparison of}}, institution = {NewClimate Institute}, year = {2013}, month = oct, url = {http://www.newclimate.org/resources/publications/regional-ghg-reduction-targets-based-on-effort-sharing-a-comparison-of}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }