Accounting for the climate&ndash;carbon feedback in emission metrics

Gasser, Thomas; Peters, Glen P.; Fuglestvedt, Jan S.; Collins, William J.; Shindell, Drew T.; Ciais, Philippe

doi:https://doi.org/10.5194/esd-8-235-2017

Articles | Volume 8, issue 2

https://doi.org/10.5194/esd-8-235-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/esd-8-235-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 2

Research article

| Highlight paper

|

10 Apr 2017

Research article | Highlight paper |

| 10 Apr 2017

Accounting for the climate–carbon feedback in emission metrics

Thomas Gasser, Glen P. Peters, Jan S. Fuglestvedt, William J. Collins, Drew T. Shindell, and Philippe Ciais

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Final revised paper (published on 10 Apr 2017)
Preprint (discussion started on 10 Nov 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

SC1: 'A high quality, pertinent article can be improved by recommending the simpler, more transparent approach to GWP calculations', Marcus Sarofim, 05 Dec 2016
- AC1: 'Response to comment #1', Thomas Gasser, 02 Mar 2017
RC1: 'interesting paper, but an accurate subjective metric does not lead to an objective one.', Anonymous Referee #1, 16 Dec 2016
- AC3: 'Response to referee #1', Thomas Gasser, 02 Mar 2017
SC2: 'Short comment', Levi Golston, 19 Dec 2016
- AC2: 'Response to comment #2', Thomas Gasser, 02 Mar 2017
RC2: 'Review for "Accounting for the climate-carbon feedback in emission metrics (Gasser et al.)"', Katsumasa Tanaka, 19 Jan 2017
- AC4: 'Response to referee #2', Thomas Gasser, 02 Mar 2017
AC5: 'Other changes & revised manuscript', Thomas Gasser, 02 Mar 2017

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to technical corrections (20 Mar 2017) by Valerio Lucarini

AR by Thomas Gasser on behalf of the Authors (23 Mar 2017) Author's response Manuscript

Short summary

Emission metrics such as GWP or GTP are used to put non-CO₂ species on a CO₂-equivalent scale. In the fifth IPCC report the metrics are inconsistent, as the climate–carbon feedback is included only for CO₂ but not for non-CO₂ species. Here, we simulate a new impulse response function for the feedback, and we use it to correct the metrics. For instance, 1 g of CH₄ is equivalent to 31 g of CO₂ (instead of 28 g) following the corrected GWP100 metric. It is 34 g if other factors are also updated.