The indirect global warming potential and global temperature change potential due to methane oxidation
Open Access
- 21 October 2009
- journal article
- research article
- Published by IOP Publishing in Environmental Research Letters
Abstract
Methane is the second most important anthropogenic greenhouse gas in the atmosphere next to carbon dioxide. Its global warming potential (GWP) for a time horizon of 100 years is 25, which makes it an attractive target for climate mitigation policies. Although the methane GWP traditionally includes the methane indirect effects on the concentrations of ozone and stratospheric water vapour, it does not take into account the production of carbon dioxide from methane oxidation. We argue here that this CO2-induced effect should be included for fossil sources of methane, which results in slightly larger GWP values for all time horizons. If the global temperature change potential is used as an alternative climate metric, then the impact of the CO2-induced effect is proportionally much larger. We also discuss what the correction term should be for methane from anthropogenic biogenic sources.This publication has 11 references indexed in Scilit:
- Transport impacts on atmosphere and climate: MetricsAtmospheric Environment, 2010
- Impact of increasing ship emissions on air quality and deposition over Europe by 2030Meteorologische Zeitschrift, 2009
- Climate trade-off between black carbon and carbon dioxide emissionsEnergy Policy, 2008
- Comparing the climate effect of emissions of short- and long-lived climate agentsPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2007
- Alternatives to the Global Warming Potential for Comparing Climate Impacts of Emissions of Greenhouse GasesClimatic Change, 2005
- An alternative approach to establishing trade-offs among greenhouse gasesNature, 2001
- Global warming in the twenty-first century: An alternative scenarioProceedings of the National Academy of Sciences of the United States of America, 2000
- Consumption of atmospheric methane by soils: A process‐based modelGlobal Biogeochemical Cycles, 1999
- Pulse response functions are cost-efficient tools to model the link between carbon emissions, atmospheric CO2 and global warmingPhysics and Chemistry of the Earth, 1996
- Lifetimes and eigenstates in atmospheric chemistryGeophysical Research Letters, 1994