Earth System Dynamics
Earth System Dynamics
ESD
Articles | Volume 8, issue 2
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
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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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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.
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