Articles | Volume 23, issue 7
https://doi.org/10.5194/acp-23-4501-2023
https://doi.org/10.5194/acp-23-4501-2023
Research article
 | 
14 Apr 2023
Research article |  | 14 Apr 2023

Global warming will largely increase waste treatment CH4 emissions in Chinese megacities: insight from the first city-scale CH4 concentration observation network in Hangzhou, China

Cheng Hu, Junqing Zhang, Bing Qi, Rongguang Du, Xiaofei Xu, Haoyu Xiong, Huili Liu, Xinyue Ai, Yiyi Peng, and Wei Xiao

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Cited articles

Bian, R., Zhang, T., Zhao, F., Chen, J., Liang, C., Li, W., Sun, Y., Chai, X., Fang, X., and Yuan, L.: Greenhouse gas emissions from waste sectors in China during 2006–2019: Implications for carbon mitigation, Proc. Saf. Environ., 161, 488–497, 2022. 
Bloom, A. A., Bowman, K. W., Lee, M., Turner, A. J., Schroeder, R., Worden, J. R., Weidner, R., McDonald, K. C., and Jacob, D. J.: A global wetland methane emissions and uncertainty dataset for atmospheric chemical transport models (WetCHARTs version 1.0), Geosci. Model Dev., 10, 2141–2156, https://doi.org/10.5194/gmd-10-2141-2017, 2017. 
Börjesson, G. and Svensson, B. H.: Seasonal and Diurnal Methane Emissions From a Landfill and Their Regulation By Methane Oxidation, Waste Manage. Res., 15, 33–54, https://doi.org/10.1177/0734242X9701500104, 1997. 
Cai, B., Liu, J., Zeng, X., Cao, D., Liu, L., Zhou, Y., and Zhang, Z.: Estimation of CH4 emission from landfill in China based on point emission sources, Adv. Clim. Change Res., 5, 81–91, 2014. 
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We build the first city-scale tower-based atmospheric CH4 concentration observation network in China. The a priori total annual anthropogenic CH4 emissions and emissions from waste treatment were overestimated by 36.0 % and 47.1 %, respectively, in Hangzhou. Global warming will largely enhance the CH4 emission factor of waste treatment, which will increase by 17.6 %, 9.6 %, 5.6 % and 4.0 % for Representative Concentration Pathway (RCP) 8.5, RCP6.0, RCP4.5 and RCP2.6, respectively, by 2100.
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