Effort sharing in ambitious,global climate change mitigation scenarios |
| |
Authors: | Tommi Ekholm,Sampo Soimakallio,Sara Moltmann,Niklas Hö hne,Sanna Syri,Ilkka Savolainen |
| |
Affiliation: | 1. VTT Technical Research Centre of Finland, P.O. Box 1000, FIN-02044 VTT, Finland;2. Ecofys Germany GmbH, Cologne, Germany;3. TKK Helsinki University of Technology, Espoo, Finland |
| |
Abstract: | The post-2012 climate policy framework needs a global commitment to deep greenhouse gas emission cuts. This paper analyzes reaching ambitious emission targets up to 2050, either ‐10% or ‐50% from 1990 levels, and how the economic burden from mitigation efforts could be equitably shared between countries. The scenarios indicate a large low-cost mitigation potential in electricity and industry, while reaching low emission levels in international transportation and agricultural emissions might prove difficult. The two effort sharing approaches, Triptych and Multistage, were compared in terms of equitability and coherence. Both approaches produced an equitable cost distribution between countries, with least developed countries having negative or low costs and more developed countries having higher costs. There is, however, no definitive solution on how the costs should be balanced equitably between countries. Triptych seems to be yet more coherent than other approaches, as it can better accommodate national circumstances. Last, challenges and possible hindrances to effective mitigation and equitable effort sharing are presented. The findings underline the significance of assumptions behind effort sharing on mitigation potentials and current emissions, the challenge of sharing the effort with uncertain future allowance prices and how inefficient markets might undermine the efficiency of a cap-and-trade system. |
| |
Keywords: | Climate change mitigation Effort sharing Scenario |
本文献已被 ScienceDirect 等数据库收录! |
|