Articles | Volume 17, issue 5
Atmos. Chem. Phys., 17, 3385–3399, 2017
https://doi.org/10.5194/acp-17-3385-2017
Atmos. Chem. Phys., 17, 3385–3399, 2017
https://doi.org/10.5194/acp-17-3385-2017

Research article 09 Mar 2017

Research article | 09 Mar 2017

Interpreting the 13C  ∕ 12C ratio of carbon dioxide in an urban airshed in the Yangtze River Delta, China

Jiaping Xu et al.

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Latest update: 26 Oct 2021
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Short summary
The Yangtze River Delta is one of the most industrialized regions in China. In situ optical isotopic measurement in Nanjing, a city located in the Delta, showed unusually high atmospheric δ13C signals in the summer (−7.44 ‰, July 2013 mean), which we attributed to the influence of cement production in the region. Flux partitioning calculations revealed that natural ecosystems in the region were a negligibly small source of atmospheric CO2.
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