气候变化领域集成服务门户(CCPortal): Satellite data reveal a common combustion emission pathway for major cities in China

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DOI	10.5194/acp-19-4269-2019
	Satellite data reveal a common combustion emission pathway for major cities in China
	Tang W.; Arellano A.F.; Gaubert B.; Miyazaki K.; Worden H.M.
发表日期	2019
ISSN	16807316
起始页码	4269
结束页码	4288
卷号	19 期号:7
英文摘要	Extensive fossil fuel combustion in rapidly developing cities severely affects air quality and public health.We report observational evidence of decadal changes in the efficiency and cleanness of bulk combustion over large cities in mainland China. In order to estimate the trends in enhancement ratios of CO and SO2 to NO2 (ΔCO/ΔNO2 and ΔSO2/ΔNO2) and infer emergent bulk combustion properties over these cities, we combine air quality retrievals from widely used satellite instruments across 2005-2014. We present results for four Chinese cities (Shenyang, Beijing, Shanghai, and Shenzhen) representing four levels of urban development. Our results show a robust coherent progression of declining to growing ΔCO/ΔNO2 relative to 2005 (-5.4±0.7 to +8.3±3.1%yr-1) and slowly declining ΔSO2/ΔNO2 (-6.0±1.0 to-3.4±1.0%yr-1) across the four cities. The coherent progression we find is not evident in the trends of emission ratios reported in Representative Concentration Pathway (RCP8.5) inventory. This progression is likely due to a shift towards cleaner combustion from industrial and residential sectors in Shanghai and Shenzhen that is not yet seen in Shenyang and Beijing. This overall trend is presently obfuscated by China's still relatively higher dependence on coal. Such progression is well-correlated with economic development and traces a common emission pathway that resembles evolution of air pollution in more developed cities. Our results highlight the utility of augmenting observing and modeling capabilities by exploiting enhancement ratios in constraining the time variation in emission ratios in current inventories. As cities and/or countries continue to socioeconomically develop, the ability to monitor combustion efficiency and effectiveness of pollution control becomes increasingly important in assessing sustainable control strategies. © 2019 Author(s).
语种	英语
scopus关键词	air quality; atmospheric pollution; carbon monoxide; combustion; decadal variation; emission; nitrogen dioxide; satellite data; sulfur dioxide; urban atmosphere; Beijing [Beijing (ADS)]; Beijing [China]; China; Guangdong; Liaoning; Shanghai; Shenyang; Shenzhen
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/144522
作者单位	Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, CO 80301, United States; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
推荐引用方式 GB/T 7714	Tang W.,Arellano A.F.,Gaubert B.,et al. Satellite data reveal a common combustion emission pathway for major cities in China[J],2019,19(7).
APA	Tang W.,Arellano A.F.,Gaubert B.,Miyazaki K.,&Worden H.M..(2019).Satellite data reveal a common combustion emission pathway for major cities in China.Atmospheric Chemistry and Physics,19(7).
MLA	Tang W.,et al."Satellite data reveal a common combustion emission pathway for major cities in China".Atmospheric Chemistry and Physics 19.7(2019).