Fat tails, exponents, extreme uncertainty: Simulating catastrophe in DICE
The problem of low-probability, catastrophic risk is increasingly central to discussion of climate science and policy. But the integrated assessment models (IAMs) of climate economics rarely incorporate this possibility. What modifications are needed to analyze catastrophic economic risks in an IAM? We explore this question using DICE, a well-known IAM. We examine the implications of a fat-tailed probability distribution for the climate sensitivity parameter, a focus of recent work by Martin Weitzman, and the shape of the damage function, one of the issues raised by the Stern Review. Forecasts of disastrous economic outcomes in DICE can result from the interaction of these two innovations, but not from either one alone.
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- Martin L. Weitzman, 2007. "A Review of the Stern Review on the Economics of Climate Change," Journal of Economic Literature, American Economic Association, vol. 45(3), pages 703-724, September.
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- Stephen Newbold & Adam Daigneault, 2009. "Climate Response Uncertainty and the Benefits of Greenhouse Gas Emissions Reductions," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 44(3), pages 351-377, November.
- Weitzman, Martin L., 2009.
"On Modeling and Interpreting the Economics of Catastrophic Climate Change,"
3693423, Harvard University Department of Economics.
- Martin L. Weitzman, 2009. "On Modeling and Interpreting the Economics of Catastrophic Climate Change," The Review of Economics and Statistics, MIT Press, vol. 91(1), pages 1-19, February.
- Simon Dietz & Chris Hope & Nicholas Stern & Dimitri Zenghelis, 2007. "REFLECTIONS ON THE STERN REVIEW (1) A Robust Case for Strong Action to Reduce the Risks of Climate Change," World Economics, World Economics, Economic & Financial Publishing, 1 Ivory Square, Plantation Wharf, London, United Kingdom, SW11 3UE, vol. 8(1), pages 121-168, January.
- Ackerman, Frank & Stanton, Elizabeth A. & Hope, Chris & Alberth, Stephane, 2009. "Did the Stern Review underestimate US and global climate damages?," Energy Policy, Elsevier, vol. 37(7), pages 2717-2721, July.
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