Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 17, issue 13
Articles | Volume 17, issue 13
https://doi.org/10.5194/acp-17-8525-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/acp-17-8525-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 17, issue 13
Research article
 | 
13 Jul 2017
Research article |  | 13 Jul 2017

Uncertainties of fluxes and 13C  ∕ 12C ratios of atmospheric reactive-gas emissions

Sergey Gromov, Carl A. M. Brenninkmeijer, and Patrick Jöckel

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Short summary
We revisit the proxies/uncertainties for the 13C/12C ratios of emissions of reactive C into the atmosphere. Our main findings are (i) a factor of 2 less uncertain estimate of tropospheric CO surface sources δ13C, (ii) a confirmed disagreement between the bottom-up and top-down 13CO-inclusive emission estimates, and (iii) a novel estimate of the δ13C signatures of a range of NMHCs/VOCs to be used in modelling studies. Results are based on the EMAC model emission set-up evaluated for 2000.
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