Charles F. Manski

“Minimax-Regret Climate Policy with Deep Uncertainty in Climate Modeling and Intergenerational Discounting”

Event description

This is the second of four webinars in our series on how (model) uncertainty shapes our understanding of the macroeconomic impacts of climate change and climate mitigation policies.

From the abstract:

Integrated assessment models have become the primary tools for comparing climate policies that seek to reduce greenhouse gas emissions. Policy comparisons have often been performed by considering a planner who seeks to make optimal trade-offs between the costs of carbon abatement and the economic damages from climate change. Studying climate policy as an optimal control problem presumes that a planner knows enough to make optimization feasible, but physical and economic uncertainties abound. Manski, Sanstad, and DeCanio (2021) studied use of the minimax-regret (MMR) decision criterion to account for deep uncertainty in climate modeling. Here we study choice of climate policy that minimizes maximum regret with deep uncertainty regarding both the correct climate model and the appropriate time discount rate to use in intergenerational assessment of policy consequences. The analysis specifies a range of discount rates to express both empirical and normative uncertainty about the appropriate rate. The findings regarding climate policy are novel and informative. The MMR analysis points to use of a relatively low discount rate of 0.02 for climate policy. The MMR decision rule keeps the maximum future temperature increase below 2℃ above the 1900-10 level for most of the parameter values used to weight costs and damages.

 

Moderator:

Anastasia Pappas
Founder, E-axes Forum

Charles F. Manski

Charles F. Manski has been Board of Trustees Professor in Economics at Northwestern University since 1997. He previously was a faculty member at the University of Wisconsin-Madison (1983-98), the Hebrew University of Jerusalem (1979-83), and Carnegie Mellon University (1973-80). He received his B.S. and Ph.D. in economics from M. I. T. in 1970 and 1973. He has also received honorary doctorates from the University of Rome ‘Tor Vergata’ (2006) and the Hebrew University of Jerusalem (2018). Charles F. Manski is an elected Member of the National Academy of Sciences. His main research interests are econometrics, judgment, decision, and public policy analysis. He is an elected Fellow of the American Academy of Arts and Sciences, the Econometric Society, the American Statistical Association, the American Association for the Advancement of Science, Distinguished Fellow of the American Economic Association, and Corresponding Fellow of the British Academy.

Paper and slides

Minimax-Regret Climate Policy with Deep Uncertainty in Climate Modeling and Intergenerational Discounting (Paper)

Minimax-Regret Climate Policy with Deep Uncertainty in Climate Modeling and Intergenerational Discounting (Slides)

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