Articles | Volume 21, issue 6
Atmos. Chem. Phys., 21, 4699–4708, 2021
Atmos. Chem. Phys., 21, 4699–4708, 2021

Technical note 26 Mar 2021

Technical note | 26 Mar 2021

Technical note: On comparing greenhouse gas emission metrics

Ian Enting and Nathan Clisby

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Estimates of climatic influence on the carbon cycle
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Earth Syst. Dynam. Discuss.,,, 2019
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Historical greenhouse gas concentrations for climate modelling (CMIP6)
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Cited articles

Allen, M. R., Fugelstvedt, J. S., Shine, K. P., Reisinger, A., Pierrehumbert, R. T., and Forster, P. M.: New use of global warming potentials to compare cumulative and short-lived climate pollutants, Nat. Clim. Change, 6, 773–777, 2016. a
Allen, M. R., Shine, K. P., Fugelstvedt, J. S., Millar, R. A., Cain, M., Frame, D. J., and Macey, A. M.: A solution to the misrepresentation of CO2-equivalent emissions of short-lived climate pollutants under ambitious mitigation, npj: Climate and Atmospheric Science, 1, 16,, 2018. a
Cain, M., Lynch, J., Allen, M. R., Fugelstvedt, J. S., Frame, D. J., and Macey, A. M.: Improved calculation of warming-equivalent emissions for short-lived climate pollutants, npj: Climate and Atmospheric Science, 2, 29,, 2019. a, b, c, d, e, f
Collins, W., Frame, D. J., Fugelstvedt, J. S., and Shine, K. P.: Stable climate metrics for emissions of short- and long-lived species – combining steps and pulses, Environ. Res. Lett., 15, 024018,, 2020. a
Enting, I. G.: Ambiguities in the calibration of carbon cycle models, Inverse Probl., 6, L39–L46, 1990. a
Short summary
We provide a new framework for comparing short-lived greenhouse gases to long-lived greenhouse gases such as carbon dioxide using methane as an example. This can clarify the differences between various proposals that have been introduced in order to overcome the use of global warming potentials as a measure of greenhouse gas equivalence.
Final-revised paper