Articles | Volume 9, issue 3
Earth Syst. Dynam., 9, 1013–1024, 2018
Earth Syst. Dynam., 9, 1013–1024, 2018

Research article 17 Aug 2018

Research article | 17 Aug 2018

A quantitative approach to evaluating the GWP timescale through implicit discount rates

Marcus C. Sarofim and Michael R. Giordano


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (25 Apr 2018) by Daniel Kirk-Davidoff
AR by Marcus Sarofim on behalf of the Authors (04 Jun 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (25 Jun 2018) by Daniel Kirk-Davidoff
RR by Anonymous Referee #4 (10 Jul 2018)
RR by Anonymous Referee #2 (11 Jul 2018)
ED: Publish as is (20 Jul 2018) by Daniel Kirk-Davidoff
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.
Final-revised paper