气候变化领域集成服务门户(CCPortal): Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: Air quality model assessment using observations of sulfate oxygen isotopes in Beijing

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DOI	10.5194/acp-19-6107-2019
	Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: Air quality model assessment using observations of sulfate oxygen isotopes in Beijing
	Shao J.; Chen Q.; Wang Y.; Lu X.; He P.; Sun Y.; Shah V.; Martin R.; Philip S.; Song S.; Zhao Y.; Xie Z.; Zhang L.; Alexander B.
发表日期	2019
ISSN	16807316
起始页码	6107
结束页码	6123
卷号	19 期号:9
英文摘要	Air quality models have not been able to reproduce the magnitude of the observed concentrations of fine particulate matter (PM2.5) during wintertime Chinese haze events. The discrepancy has been at least partly attributed to low biases in modeled sulfate production rates, due to the lack of heterogeneous sulfate production on aerosols in the models. In this study, we explicitly implement four heterogeneous sulfate formation mechanisms into a regional chemical transport model, in addition to gas-phase and in-cloud sulfate production. We compare the model results with observations of sulfate concentrations and oxygen isotopes, "17O( ${SO}_{4}^{2 -}$ ), in the winter of 2014-2015, the latter of which is highly sensitive to the relative importance of different sulfate production mechanisms. Model results suggest that heterogeneous sulfate production on aerosols accounts for about 20 % of sulfate production in clean and polluted conditions, partially reducing the modeled low bias in sulfate concentrations. Model sensitivity studies in comparison with the "17O( ${SO}_{4}^{2 -}$ ) observations suggest that heterogeneous sulfate formation is dominated by transition metal ion-catalyzed oxidation of
语种	英语
scopus关键词	aerosol; air quality; atmospheric transport; concentration (composition); haze; oxidation; oxygen isotope; sensitivity analysis; sulfate; winter; Beijing [China]; China
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/144433
作者单位	Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China; Department of Atmospheric Sciences, University of Washington, Seattle, WA 98195, United States; Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, United States; Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77204, United States; Anhui Province Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China; State Key Laboratory of Atmospheric Boundary Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; School of Engineering and Applied Sciences, Harvard University, Cambridge, M.A. 02138, United States; Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, Canada; NASA Postdoctoral Program, NASA Ame...
推荐引用方式 GB/T 7714	Shao J.,Chen Q.,Wang Y.,et al. Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: Air quality model assessment using observations of sulfate oxygen isotopes in Beijing[J],2019,19(9).
APA	Shao J..,Chen Q..,Wang Y..,Lu X..,He P..,...&Alexander B..(2019).Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: Air quality model assessment using observations of sulfate oxygen isotopes in Beijing.Atmospheric Chemistry and Physics,19(9).
MLA	Shao J.,et al."Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: Air quality model assessment using observations of sulfate oxygen isotopes in Beijing".Atmospheric Chemistry and Physics 19.9(2019).