城市尺度温室气体排放反演研究进展及发展趋势

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Abstract Urban areas are hotspots for carbon dioxide (CO₂) and methane (CH₄), accounting for 40% to 50% of the global anthropogenic emissions. Therefore, the accurate quantification of their emissions directly impacts the formulation and implementation of climate change policies. The emission inventories are currently the main approach to account for emissions. However, numerous studies have shown that the uncertainty of greenhouse gas inventories at the urban scale is still larger than 50%. Hence, there is an urgent need to reduce the uncertainty in emission inventories. Inverse estimation methods, which is based on concentration observations and atmospheric transport model, have gradually been used for the estimation of urban-scale greenhouse gas emissions since 2010. However, there still exists many knowledge gaps for this approach. To meet the goal of "dual carbon" as announced in 2021, this paper reviews the research progress of urban-scale greenhouse gas emissions and discussed recent difficulties and challenges. It points out that the greenhouse gas concentration observation network is still lacking in China. And the use of medium-precision concentration observation networks and simultaneously developing of emission inventories and meteorological fields with spatial resolutions of 1km are important directions to accurately resolve the total emissions and spatiotemporal patterns of greenhouse gases at the urban scale in the future. By systematically summarizing the current research status, progress, and issues related to urban-scale greenhouse gas emissions in this paper, it is expected to provide methodological references and theoretical insights for the implementation of China's "dual carbon" strategy.

Key words： greenhouse gas emission inversion tower-based site atmospheric transport model

Received: 16 May 2024

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	Articles by authors
	HU Cheng
	ZHANG Jun-qing
	LIU Hui-li
	SHI Xue-jing
	SUN Fan
	XIAO Wei

Cite this article:

HU Cheng,ZHANG Jun-qing,LIU Hui-li等. Review of the greenhouse gas emission inversion approaches at city scale and future development trends[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(12): 7036-7045.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I12/7036

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