气候变化领域集成服务门户(CCPortal): Global modeling of heterogeneous hydroxymethanesulfonate chemistry

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DOI	10.5194/acp-21-457-2021
	Global modeling of heterogeneous hydroxymethanesulfonate chemistry
	Song S.; Ma T.; Zhang Y.; Shen L.; Liu P.; Li K.; Zhai S.; Zheng H.; Gao M.; Moch J.M.; Duan F.; He K.; McElroy M.B.
发表日期	2021
ISSN	1680-7316
起始页码	457
结束页码	481
卷号	21 期号:1
英文摘要	Hydroxymethanesulfonate (HMS) has recently been identified as an abundant organosulfur compound in aerosols during winter haze episodes in northern China. It has also been detected in other regions although the concentrations are low. Because of the sparse field measurements, the global significance of HMS and its spatial and seasonal patterns remain unclear. Here, we modify and add to the implementation of HMS chemistry in the GEOS-Chem chemical transport model and conduct multiple global simulations. The model accounts for cloud entrainment and gas-aqueous mass transfer within the rate expressions for heterogeneous sulfur chemistry. Our simulations can generally reproduce quantitative HMS observations from Beijing and show that East Asia has the highest HMS concentration, followed by Europe and North America. The simulated HMS shows a seasonal pattern with higher values in the colder period. Photochemical oxidizing capacity affects the competition of formaldehyde with oxidants (such as ozone and hydrogen peroxide) for sulfur dioxide and is a key factor influencing the seasonality of HMS. The highest average HMS concentration (1-3 m-3) and HMS sulfate molar ratio (0.1-0.2) are found in northern China in winter. The simulations suggest that aqueous clouds act as the major medium for HMS chemistry while aerosol liquid water may play a role if its rate constant for HMS formation is greatly enhanced compared to cloud water. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	aerosol composition; atmospheric chemistry; chemical composition; haze; mass transfer; numerical model; sulfur compound; trace element; China; Europe; North America
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/247233
作者单位	School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Tsinghua University, Beijing, 100084, China; School of Engineering, Westlake University, Hangzhou, Zhejiang, 310024, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, 310024, China; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, United States; Department of Geography, State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong, Hong Kong
推荐引用方式 GB/T 7714	Song S.,Ma T.,Zhang Y.,et al. Global modeling of heterogeneous hydroxymethanesulfonate chemistry[J],2021,21(1).
APA	Song S..,Ma T..,Zhang Y..,Shen L..,Liu P..,...&McElroy M.B..(2021).Global modeling of heterogeneous hydroxymethanesulfonate chemistry.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(1).
MLA	Song S.,et al."Global modeling of heterogeneous hydroxymethanesulfonate chemistry".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.1(2021).