Articles | Volume 9, issue 3
https://doi.org/10.5194/esd-9-1013-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esd-9-1013-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
17 Aug 2018
Research article | Highlight paper |
| 17 Aug 2018
| 17 Aug 2018
A quantitative approach to evaluating the GWP timescale through implicit discount rates
Climate Change Division, US Environmental Protection Agency,
Washington, DC 20001, USA
Michael R. Giordano
AAAS S&T Policy Fellow Hosted by the EPA Office of Atmospheric
Programs, Washington, DC 20001, USA
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19 citations as recorded by crossref.
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- The time value of carbon storage Z. Parisa et al. 10.1016/j.forpol.2022.102840
- The social costs of hydrofluorocarbons and the benefits from their expedited phase-down T. Tan et al. 10.1038/s41558-023-01898-9
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- Consequences of equivalency metric design for energy transitions and climate change M. Edwards & J. Trancik 10.1007/s10584-022-03442-8
2 citations as recorded by crossref.
Latest update: 06 Jul 2025
Short summary
The 100-year GWP is the most widely used metric for comparing the climate impact of different gases such as methane and carbon dioxide. However, there have been recent arguments for the use of different timescales. This paper uses straightforward estimates of future damages to quantitatively determine the appropriate timescale as a function of how society discounts the future and finds that the 100-year timescale is consistent with commonly used discount rates.
The 100-year GWP is the most widely used metric for comparing the climate impact of different...
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