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Economics And Climate Change: Integrated Assessment In A Multi-Region World

  • John Hassler
  • Per Krusell

This paper develops a model that integrates the climate and the global economy---an integrated assessment model---with which different policy scenarios can be analyzed and compared. The model is a dynamic stochastic general-equilibrium setup with a continuum of regions. Thus, it is a full stochastic general-equilibrium version of RICE, Nordhaus's pioneering multi-region integrated assessment model. Like RICE, our model features traded fossil fuel but otherwise has no markets across regions---there is no insurance nor any intertemporal trade across them. The extreme form of market incompleteness is not fully realistic but arguably not a decent approximation of reality. Its major advantage is that, along with a set of reasonable assumptions on preferences, technology, and nature, it allows a closed-form model solution. We use the model to assess the welfare consequences of carbon taxes that differ across as well as within oil-consuming and -producing regions. We show that, surprisingly, only taxes on oil producers can improve the climate: taxes on oil consumers have no effect at all. The calibrated model suggests large differences in views on climate policy across regions.

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Article provided by European Economic Association in its journal Journal of the European Economic Association.

Volume (Year): 10 (2012)
Issue (Month): 5 (October)
Pages: 974-1000

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Handle: RePEc:bla:jeurec:v:10:y:2012:i:5:p:974-1000
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  1. Manne, Alan & Mendelsohn, Robert & Richels, Richard, 1995. "MERGE : A model for evaluating regional and global effects of GHG reduction policies," Energy Policy, Elsevier, vol. 23(1), pages 17-34, January.
  2. Hassler, John & Krusell, Per & Olovsson, Conny, 2012. "Energy-Saving Technical Change," CEPR Discussion Papers 9177, C.E.P.R. Discussion Papers.
  3. John Hassler & Per Krusell & Conny Olovsson, 2010. "Oil Monopoly and the Climate," American Economic Review, American Economic Association, vol. 100(2), pages 460-64, May.
  4. Golosov, Mikhail & Hassler, John & Krusell, Per & Tsyvinski, Aleh, 2011. "Optimal taxes on fossil fuel in general equilibrium," CEPR Discussion Papers 8527, C.E.P.R. Discussion Papers.
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