气候变化领域集成服务门户(CCPortal): Influence of atmospheric in-cloud aqueous-phase chemistry on the global simulation of SO2in CESM2

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DOI	10.5194/acp-21-16093-2021
	Influence of atmospheric in-cloud aqueous-phase chemistry on the global simulation of SO2in CESM2
	Ge W.; Liu J.; Yi K.; Xu J.; Zhang Y.; Hu X.; Ma J.; Wang X.; Wan Y.; Hu J.; Zhang Z.; Wang X.; Tao S.
发表日期	2021
ISSN	1680-7316
起始页码	16093
结束页码	16120
卷号	21 期号:21
英文摘要	Sulfur dioxide (SO2) is a major atmospheric pollutant and precursor of sulfate aerosols, which influences air quality, cloud microphysics, and climate. Therefore, better understanding the conversion of SO2 to sulfate is essential to simulate and predict sulfur compounds more accurately. This study evaluates the effects of in-cloud aqueous-phase chemistry on SO2 oxidation in the Community Earth System Model version 2 (CESM2). We replaced the default parameterized SO2 aqueous-phase reactions with detailed HOx, Fe, N, and carbonate chemistry in cloud droplets and performed a global simulation for 2014-2015. Compared with the observations, the results incorporating detailed cloud aqueous-phase chemistry greatly reduced SO2 overestimation. This overestimation was reduced by 0.1-10ppbv (parts per billion by volume) in most of Europe, North America, and Asia and more than 10ppbv in parts of China. The biases in annual simulated SO2 mixing ratios decreased by 46%, 41%, and 22% in Europe, the USA, and China, respectively. Fe chemistry and HOx chemistry contributed more to SO2 oxidation than N chemistry. Higher concentrations of soluble Fe and higher pH values could further enhance the oxidation capacity. This study emphasizes the importance of detailed in-cloud aqueous-phase chemistry for the oxidation of SO2. These mechanisms can improve SO2 simulation in CESM2 and deepen understanding of SO2 oxidation and sulfate formation. © Copyright: Authors 2021
语种	英语
scopus关键词	accuracy assessment; aerosol; air quality; atmospheric pollution; cloud microphysics; formation mechanism; parameterization; pollution monitoring; sulfate; sulfur dioxide; China; Europe; United States
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/246466
作者单位	Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China; Institute of Science and Technology, China Three Gorges Corporation, Beijing, 100038, China; College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
推荐引用方式 GB/T 7714	Ge W.,Liu J.,Yi K.,et al. Influence of atmospheric in-cloud aqueous-phase chemistry on the global simulation of SO2in CESM2[J],2021,21(21).
APA	Ge W..,Liu J..,Yi K..,Xu J..,Zhang Y..,...&Tao S..(2021).Influence of atmospheric in-cloud aqueous-phase chemistry on the global simulation of SO2in CESM2.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(21).
MLA	Ge W.,et al."Influence of atmospheric in-cloud aqueous-phase chemistry on the global simulation of SO2in CESM2".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.21(2021).