Temperature control, emission abatement and costs: key EMF 27 results from Environment Canada’s Integrated Assessment Model
This paper investigates the potential impacts of alternative international climate change scenarios based on different policies and technological circumstances on future emission pathways and abatement costs. It also examines if these hypothetical scenarios could result in significant emission reductions required to control the global temperature from rising to no more than 2.5 °C above preindustrial level. Using an integrated assessment model, this paper examines these issues under 12 scenarios derived from four policy perspectives and three technology dimensions. Results show that the no-policy-change baseline scenarios lead to high global average temperatures in the future. To control the temperature efficiently, every global region will be required to undertake considerable abatement efforts. Current country pledges alone, even if fully implemented, cannot control the global temperature in the future to within a comfortable zone. There will still be large gap between the reductions needed to meet the 2.5 degree objective, associated with 550 ppm and the reductions associated with existing abatement efforts. Further stringent policies together with favourable technological conditions may lead to the desired level of temperature control. Participation by only a subset of nations not only makes achieving the temperature goal difficult but also costly. To achieve temperature control efficiently, global coordination and full participation by all regions are necessary and global participation may reduce global abatement costs. It is worth noting that abatement costs vary widely across regions under different policy and technology scenarios.
KeywordsAbatement Cost Baseline Scenario Policy Scenario Emission Abatement Preindustrial Level
We are grateful to Christoph Böhringer and Thomas Rutherford for helping us with model development. We thank the three anonymous referees and Derek Hermanutz, Nick Macaluso, Jessica Norup, Julie Vanderschot, Katherine Monahan, Deming Luo, Muhammad Shahid Siddiqui and Cheng-Marshal Wang for insightful comments on an earlier version of the paper. Views expressed in this paper are those of the authors and do not necessarily reflect those of Environment Canada or the Government of Canada.
- Baer P, Athanasiou T, Kartha S (2009) A 350 ppm emergency pathway. Stockholm Environmental Institute, BostonGoogle Scholar
- Bosetti V, Carraro C, Tavoni M (2008) Delayed participation of developing countries to climate agreements: should action in the E.U. and U.S. be postponed? Fondazione Eni Enrico Mattei, Working Paper N.70-2008Google Scholar
- Clarke L, Edmonds J, Jacoby H, Pitcher H, Reilly J, Richels R (2007) Scenarios of greenhouse gas emissions and atmospheric concentrations. Sub-report 2.1A of Synthesis and Assessment Product 2.1 by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research. Department of Energy, Office of Biological & Environmental Research, Washington, DC, 154 ppGoogle Scholar
- Clarke L, Calvin K, Edmonds J, Kyle P, Wise M (2008) Technology and international climate policy. Prepared for the Harvard Project on International Climate AgreementsGoogle Scholar
- Fisher BS, Nakicenovic N, Alfsen K, CorfeeMorlot J, de la Chesnaye F, Hourcade J-C, Jiang K, Kainuma M, La Rovere E, Matysek A, Rana A, Riahi K, Richels R, Rose S, van Vuuren D, Warren R (2007) Issues related to mitigation in the long term context. In: Metz B, Davidson OR, Bosch PR, Dave R, Meyer LA (eds) Climate Change 2007:Mitigation. Contribution of Working Group III to the Fourth Assessment Report of the Inter-governmental Panel on Climate Change. Cambridge University Press, CambridgeGoogle Scholar
- Government of Canada (2012) Reduction of carbon dioxide emissions from coal-fired generation of electricity regulations. Can Gaz 146(19)Google Scholar
- Hoffert MI, Caldeira K, Benford G, Criswell DR, Green C, Herzog H, Jain AK, Kheshgi HS, Lackner KS, Lewis JS, Lightfoot HD, Manheimer W, Mankins JC, Mauel ME, Perkins LJ, Schlesinger ME, Volk T, Wigley TML (2002) Advanced technology paths to global climate stability: energy for a greenhouse planet. Science 298(1):981–987CrossRefGoogle Scholar
- Jaeger C, Oppenheimer M (2005) Emissions pathways to avoid dangerous climate change—a trans-atlantic view. SWP Berlin NTACTGoogle Scholar
- National Energy Board (2011) Canada’s energy future: energy supply and demand projections to 2035. NEBGoogle Scholar
- Richels R, Rutherford T, Blanford G, Clarke L (2008) Managing the transition to climate stabilization. Clim Pol 7(5):409–428Google Scholar
- UNEP (2010) The emission gap report, are the copenhagen accord pledges sufficient to limit global warming to 2°C or 1.5°C? A preliminary report, November 2010Google Scholar
- Weyant J et al (1996) Integrated assessment of climate change: an overview and comparison of approaches and results. In: Bruce JP et al (eds) Climate change 1995: economic and social dimensions of climate change. Cambridge University Press, Cambridge, pp 367–439Google Scholar