Climate risks and carbon prices: Revising the social cost of carbon
The social cost of carbon - or marginal damage caused by an additional ton of carbon dioxide emissions - has been estimated by a U.S. government working group at $21/tCO2 in 2010. That calculation, however, omits many of the biggest risks associated with climate change, and downplays the impact of current emissions on future generations. Our reanalysis explores the effects of uncertainty about climate sensitivity, the shape of the damage function, and the discount rate. We show that the social cost of carbon is uncertain across a broad range, and could be much higher than $21/tCO2. In our case combining high climate sensitivity, high damages, and a low discount rate, the social cost of carbon could be almost $900/tCO2 in 2010, rising to $1,500/tCO2 in 2050. The most ambitious scenarios for eliminating carbon dioxide emissions as rapidly as technologically feasible (reaching zero or negative net global emissions by the end of this century) require spending up to $150 to $500 per ton of reductions of carbon dioxide emissions by 2050. Using a reasonable set of alternative assumptions, therefore, the damages from a ton of carbon dioxide emissions in 2050 could exceed the cost of reducing emissions at the maximum technically feasible rate. Once this is the case, the exact value of the social cost of carbon loses importance: the clear policy prescription is to reduce emissions as rapidly as possible, and cost-effectiveness analysis offers better insights for climate policy than cost-benefit analysis.
Volume (Year): 6 (2012)
Issue (Month): ()
|Contact details of provider:|| Postal: Kiellinie 66, D-24105 Kiel|
Phone: +49 431 8814-1
Fax: +49 431 8814528
Web page: http://www.economics-ejournal.org/
More information through EDIRC
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Martin L. Weitzman, 2012.
"GHG Targets as Insurance Against Catastrophic Climate Damages,"
Journal of Public Economic Theory,
Association for Public Economic Theory, vol. 14(2), pages 221-244, 03.
- Martin L. Weitzman, 2010. "GHG Targets as Insurance Against Catastrophic Climate Damages," NBER Working Papers 16136, National Bureau of Economic Research, Inc.
- Weitzman, Martin L., 2012. "GHG Targets as Insurance Against Catastrophic Climate Damages," Scholarly Articles 11315435, Harvard University Department of Economics.
- Detlef Vuuren & Jason Lowe & Elke Stehfest & Laila Gohar & Andries Hof & Chris Hope & Rachel Warren & Malte Meinshausen & Gian-Kasper Plattner, 2011. "How well do integrated assessment models simulate climate change?," Climatic Change, Springer, vol. 104(2), pages 255-285, January.
- Kopp, Robert E. & Golub, Alexander & Keohane, Nathaniel O. & Onda, Chikara, 2011. "The influence of the specification of climate change damages on the social cost of carbon," Economics Discussion Papers 2011-22, Kiel Institute for the World Economy (IfW).
- repec:aen:journl:2010se1_low_stabilization-a06 is not listed on IDEAS
- Terry Barker and S. Serban Scrieciu, 2010. "Modeling Low Climate Stabilization with E3MG: Towards a 'New Economics' Approach to Simulating Energy-Environment-Economy System Dynamics," The Energy Journal, International Association for Energy Economics, vol. 0(Special I).
- Ottmar Edenhofer , Brigitte Knopf, Terry Barker, Lavinia Baumstark, Elie Bellevrat, Bertrand Chateau, Patrick Criqui, Morna Isaac, Alban Kitous, Socrates Kypreos, Marian Leimbach, Kai Lessmann, Bertra, 2010. "The Economics of Low Stabilization: Model Comparison of Mitigation Strategies and Costs," The Energy Journal, International Association for Energy Economics, vol. 0(Special I).
- Ottmar Edenhofer & Brigitte Knopf & Terry Barker & Lavinia Baumstark & Elie Bellevrat & Bertrand Chateau & Patrick Criqui & Morna Isaac & Alban Kitous & Socrates Kypreos & Marian Leimbach & Kai Lessma, 2010. "The economics of low stabilization: Model comparison of mitigation strategies and costs," Post-Print halshs-00450290, HAL.
- Alban Kitous, Patrick Criqui, Elie Bellevrat and Bertrand Chateau, 2010. "Transformation Patterns of the Worldwide Energy System - Scenarios for the Century with the POLES Model," The Energy Journal, International Association for Energy Economics, vol. 0(Special I).
- Alban Kitous & Patrick Criqui & Elie Bellevrat & Bertrand Chateau, 2010. "Transformation Patterns of the Worldwide Energy System – Scenarios for the Century with the POLES Model," Post-Print halshs-00450304, HAL.
When requesting a correction, please mention this item's handle: RePEc:zbw:ifweej:201210. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (ZBW - German National Library of Economics)
If references are entirely missing, you can add them using this form.