Role of export industries on ozone pollution and its precursors in China

Jiamin Ou, Zhijiong Huang, Zbigniew Klimont (), Guanglin Jia, Shaohui Zhang, Cheng Li, Jing Meng, Zhifu Mi, Heran Zheng, Yuli Shan, Peter K. K. Louie, Junyu Zheng () and Dabo Guan ()
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Jiamin Ou: Utrecht University
Zhijiong Huang: Jinan University
Zbigniew Klimont: International Institute for Applied Systems Analysis
Guanglin Jia: South China University of Technology, University Town
Shaohui Zhang: International Institute for Applied Systems Analysis
Cheng Li: Dongguan University of Technology
Jing Meng: University College London
Heran Zheng: University of East Anglia
Yuli Shan: University of Groningen
Peter K. K. Louie: Hong Kong Environmental Protection Department
Junyu Zheng: Jinan University
Dabo Guan: University College London

Nature Communications, 2020, vol. 11, issue 1, 1-12

Abstract: Abstract This study seeks to estimate how global supply chain relocates emissions of tropospheric ozone precursors and its impacts in shaping ozone formation. Here we show that goods produced in China for foreign markets lead to an increase of domestic non-methane volatile organic compounds (NMVOCs) emissions by 3.5 million tons in 2013; about 13% of the national total or, equivalent to half of emissions from European Union. Production for export increases concentration of NMVOCs (including some carcinogenic species) and peak ozone levels by 20–30% and 6–15% respectively, in the coastal areas. It contributes to an estimated 16,889 (3,839–30,663, 95% CI) premature deaths annually combining the effects of NMVOCs and ozone, but could be reduced by nearly 40% by closing the technology gap between China and EU. Export demand also alters the emission ratios between NMVOCs and nitrogen oxides and hence the ozone chemistry in the east and south coast.

Date: 2020
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DOI: 10.1038/s41467-020-19035-x

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