Environmental Modeling & Assessment

, Volume 17, Issue 3, pp 231–239 | Cite as

The GTP of Methane: Modeling Analysis of Temperature Impacts of Methane and Carbon Dioxide Reductions

  • Marcus C. SarofimEmail author


The Global Temperature Potential (GTP) has recently been proposed as an alternative to the Global Warming Potential (GWP). Using two different Earth Models of Intermediate Complexity, we show that the solution to the 100-year sustained GTP for methane is significantly larger than the equivalent GWP due to the inclusion of future changes in greenhouse gas concentrations in the reference scenario and different atmospheric chemistry assumptions. This result suggests that methane reductions may be undervalued when using GWPs, but the policy implications depend on how the objectives of greenhouse gas policy are defined.


Methane Carbon dioxide Global warming potential Metrics Global temperature potential EMIC modeling 



We thank Andrei Sokolov for the assistance in running model simulations during the revision process, as well as the editors and reviewers for feedback that led to significant improvements in the manuscript.


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© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Hosted by the U.S. Environmental Protection Agency Climate Change DivisionAAAS Science and Technology Policy FellowshipWashingtonUSA

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