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Energy Balance Climate Models and the Spatial Structure of Optimal Mitigation Policies

  • Gustav Engstrom
  • William Brock
  • Anastasios Xepapadeas

We develop a one-dimemsional energy balance climate model with heat transportation across locations. We introduce the concept of po- tential world GDP at time t, and we introduce, through the temper- ature function, spatial characteristics into the damage function which make damages latitude dependent. We solve the social planner��s prob- lem and characterize the competitive equilibrium. We de��ne optimal taxes on fossil fuels and pro��t taxes on ��rms that extract fossil fuels. Our results suggest that if the implementation of international trans- fers across latitudes is not possible, then optimal taxes are spatially non homogeneous and tend to be lower at the poor latitudes. The degree of spatial di�¤erentiation of optimal taxes depend on heat trans- portation. We also locate su�¢ cient conditions for optimal mitigation policies to have rapid ramp-up initially and then decrease over time. By employing the properties of the spatial model and approximating solutions, we show how to study the impact of thermal transport across latitudes on welfare inequality.

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Paper provided by Athens University of Economics and Business in its series DEOS Working Papers with number 1202.

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Date of creation: 22 Jan 2012
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Handle: RePEc:aue:wpaper:1202
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  1. 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.
  2. Per Krusell & Toshihiko Mukoyama & Richard Rogerson & Aysegul Sahin, 2009. "A Three State Model of Worker Flows in General Equilibrium," NBER Working Papers 15251, National Bureau of Economic Research, Inc.
  3. Thomas Sterner & U. Martin Persson, 2008. "An Even Sterner Review: Introducing Relative Prices into the Discounting Debate," Review of Environmental Economics and Policy, Association of Environmental and Resource Economists, vol. 2(1), pages 61-76, Winter.
  4. Chichilnisky, Graciela & Heal, Geoffrey, 1994. "Who should abate carbon emissions? : An international viewpoint," Economics Letters, Elsevier, vol. 44(4), pages 443-449, April.
  5. Michael Keen & Christos Kotsogiannis, 2011. "Coordinating Climate and Trade Policies: Pareto Efficiency and the Role of Border Tax Adjustments," CESifo Working Paper Series 3494, CESifo Group Munich.
  6. Melissa Dell & Benjamin F. Jones & Benjamin A. Olken, 2008. "Climate Change and Economic Growth: Evidence from the Last Half Century," NBER Working Papers 14132, National Bureau of Economic Research, Inc.
  7. Geoffrey Heal, 2009. "Climate Economics: A Meta-Review and Some Suggestions for Future Research," Review of Environmental Economics and Policy, Association of Environmental and Resource Economists, vol. 3(1), pages 4-21, Winter.
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