Vol. 2, 2008-25 August 12, 2008 The Social Cost of Carbon: Trends, Outliers and Catastrophes Richard S.J. Tol Economic and Social Research Institute, Dublin, Ireland; Institute for Environmental Studies, Vrije Universiteit, Amsterdam, The Netherlands; Department of Spatial Economics, Vrije Universiteit, Amsterdam, The Netherlands; Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh, PA, USA Abstract: 211 estimates of the social cost of carbon are included in a meta-analysis. The results confirm that a lower discount rate implies a higher estimate; and that higher estimates are found in the gray literature. It is also found that there is a downward trend in the economic impact estimates of the climate; that the Stern Review’s estimates of the social cost of carbon is an outlier; and that the right tail of the distribution is fat. There is a fair chance that the annual climate liability exceeds the annual income of many people. JEL: Q54 Keywords: Climate change; social cost of carbon Correspondence: Richard S.J.Tol, ESRI, Whitaker Square, Sir John Rogerson’s Quay, Dublin 2, Ireland,
[email protected]. Comments by Cameron Hepburn, Steve Rose, Gary Yohe, and two anonymous referees helped to improve the paper. Funding by the ESRI’s Energy Policy Research Centre is gratefully acknowledged. www.economics-ejournal.org/economics/journalarticles © Author(s) 2008. This work is licensed under a Creative Commons License - Attribution-NonCommercial 2.0 Germany Economics: The Open-Access, Open-Assessment E-Journal 1 1 Introduction Estimates of the social cost of carbon (dioxide emissions), or the marginal damage cost of climate change are an essential ingredient to any assessment of climate policy.