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The Greenhouse Debate: Econonmic Efficiency, Burden Sharing and Hedging Strategies

Alan Manne and Richard Richels

Year: 1995
Volume: Volume16
Number: Number 4
DOI: 10.5547/ISSN0195-6574-EJ-Vol16-No4-1
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We address the issue of economic efficiency as it relates to climate change. We begin with a classical cost-benefit perspective. Mat is, we focus on emission trajectories which maximize net benefits. We then examine the consequences of adopting alternative decision making paradigms-for example, those based on limiting atmospheric concentrations so as to achieve an "ample margin of safety." We also consider the regional distribution of costs and benefits under alternative burden sharing schemes. Although the climate issue is often viewed from a global perspective, international negotiators will be acutely interested in how damages and mitigation costs might be distributed among individual regions. Finally, we address the issue of decision making under uncertainty. The challenge confronting today's policy makers is to identify it sensible hedging strategy-one that balances the risks of waiting against those of premature action.

Burden Sharing Within a Multi-Gas Strategy

Alain Bernard, Marc Vielle and Laurent Viguier

Year: 2006
Volume: Multi-Greenhouse Gas Mitigation and Climate Policy
Number: Special Issue #3
DOI: 10.5547/ISSN0195-6574-EJ-VolSI2006-NoSI3-14
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The purpose of this paper is to assess and compare regional welfare costs associated with alternative multi-gas strategies for a stabilization of global greenhouse gases (GHG) emissions in the long run. Mitigation costs of non-CO2 greenhouse gases are integrated into a multi-region multi-country CGE model of the world economy. Calibrations are based on GHG emissions projections from, and marginal abatement cost curves provided by, the EMF21 working group for the six greenhouse gases. We find that the introduction of non-CO2 GHGs in the mitigation strategy reduces significantly the welfare cost of a long term emissions stabilization policy but that benefits vary across regions. We also find that the various possible rules of emission quotas allocation may have large effects on the burden sharing among regions.

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