气候变化领域集成服务门户(CCPortal): Observing carbon dioxide emissions over China's cities and industrial areas with the Orbiting Carbon Observatory-2

CCPortal

DOI	10.5194/acp-20-8501-2020
	Observing carbon dioxide emissions over China's cities and industrial areas with the Orbiting Carbon Observatory-2
	Zheng B.; Chevallier F.; Ciais P.; Broquet G.; Wang Y.; Lian J.; Zhao Y.
发表日期	2020
ISSN	1680-7316
起始页码	8501
结束页码	8510
卷号	20 期号:14
英文摘要	In order to track progress towards the global climate targets, the parties that signed the Paris Climate Agreement will regularly report their anthropogenic carbon dioxide (CO2) emissions based on energy statistics and CO2 emission factors. Independent evaluation of this self-reporting system is a fast-growing research topic. Here, we study the value of satellite observations of the column CO2 concentrations to estimate CO2 anthropogenic emissions with 5 years of the Orbiting Carbon Observatory-2 (OCO-2) retrievals over and around China. With the detailed information of emission source locations and the local wind, we successfully observe CO2 plumes from 46 cities and industrial regions over China and quantify their CO2 emissions from the OCO-2 observations, which add up to a total of 1.3 GtCO2 yr-1 that accounts for approximately 13% of mainland China's annual emissions. The number of cities whose emissions are constrained by OCO-2 here is 3 to 10 times larger than in previous studies that only focused on large cities and power plants in different locations around the world. Our satellite-based emission estimates are broadly consistent with the independent values from China's detailed emission inventory MEIC but are more different from those of two widely used global gridded emission datasets (i.e., EDGAR and ODIAC), especially for the emission estimates for the individual cities. These results demonstrate some skill in the satellite-based emission quantification for isolated source clusters with the OCO-2, despite the sparse sampling of this instrument not designed for this purpose. This skill can be improved by future satellite missions that will have a denser spatial sampling of surface emitting areas, which will come soon in the early 2020s. © 2020 Author(s).
英文关键词	anthropogenic source; atmospheric pollution; carbon dioxide; carbon emission; concentration (composition); emission inventory; industrial district; observatory; power plant; satellite data; urban atmosphere; China
语种	英语
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/168964
作者单位	Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, UMR8212, Gif-sur-Yvette, France; Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Zheng B.,Chevallier F.,Ciais P.,et al. Observing carbon dioxide emissions over China's cities and industrial areas with the Orbiting Carbon Observatory-2[J],2020,20(14).
APA	Zheng B..,Chevallier F..,Ciais P..,Broquet G..,Wang Y..,...&Zhao Y..(2020).Observing carbon dioxide emissions over China's cities and industrial areas with the Orbiting Carbon Observatory-2.Atmospheric Chemistry and Physics,20(14).
MLA	Zheng B.,et al."Observing carbon dioxide emissions over China's cities and industrial areas with the Orbiting Carbon Observatory-2".Atmospheric Chemistry and Physics 20.14(2020).