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Multigas Mitigation: An Economic Analysis Using GRAPE Model

Future global warming may depend strongly on the potential for abating emissions of greenhouse gases (GHGs). Flexibility in implementing climate change mitigation policies can significantly reduce mitigation costs and has three dimensions; space, time and gas species. Therefore, multiple greenhouse gas reduction flexibility should be considered. The emission and reduction potential of CO2 and non-CO2 GHGs are assessed here using an integrated assessment model under climate change targets. The implications on gas life as well as abatement timing uncertainty on costs, technological availability, etc. are discussed. The introduction of additional multigas reductions will cut the economic burden of achieving a given climate change target. The conclusions are threefold; (1) Multigas mitigation is a cost effective strategy compared to CO2-only mitigation under the same climate target, (2) CO2 mitigation is expected to lead to ancillary reductions in CH4, N2O and SOx emissions, and (3) There is great uncertainty in the assessment of non-CO2 GHG mitigation opportunities.

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Energy Specializations: Energy Modeling – Other; Energy and the Environment – Climate Change and Greenhouse Gases; Energy and the Environment – Air Emissions (other than greenhouse gases)

JEL Codes:
C59 - Econometric Modeling: Other
Q54 - Climate; Natural Disasters and Their Management; Global Warming
Q52 - Pollution Control Adoption and Costs; Distributional Effects; Employment Effects

Keywords: Multi-gas mitigation, GRAPE model, Kyoto protocol, Radiative forcing, clmate change policy

DOI: 10.5547/ISSN0195-6574-EJ-VolSI2006-NoSI3-13

Published in Multi-Greenhouse Gas Mitigation and Climate Policy, Special Issue #3 of The Quarterly Journal of the IAEE's Energy Economics Education Foundation.