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DOI	10.5194/acp-20-15835-2020
	Influence of aerosol copper on HO2 uptake: A novel parameterized equation
	Song H.; Chen X.; Lu K.; Zou Q.; Tan Z.; Fuchs H.; Wiedensohler A.; Moon D.R.; Heard D.E.; Baeza-Romero M.-T.; Zheng M.; Wahner A.; Kiendler-Scharr A.; Zhang Y.
发表日期	2020
ISSN	1680-7316
起始页码	15835
结束页码	15850
卷号	20 期号:24
英文摘要	Heterogeneous uptake of hydroperoxyl radicals (HO2) onto aerosols has been proposed to be a significant sink of HOx , hence impacting the atmospheric oxidation capacity. Accurate calculation of the HO2 uptake coefficient HO2 is key to quantifying the potential impact of this atmospheric process. Laboratory studies show that HO2 can vary by orders of magnitude due to changes in aerosol properties, especially aerosol soluble copper (Cu) concentration and aerosol liquid water content (ALWC). In this study we present a state-of-the-art model called MARK to simulate both gas- and aerosol-phase chemistry for the uptake of HO2 onto Cu-doped aerosols. Moreover, a novel parameterization of HO2 uptake was developed that considers changes in relative humidity (RH) and condensed-phase Cu ion concentrations and which is based on a model optimization using previously published and new laboratory data included in this work. This new parameterization will be applicable to wet aerosols, and it will complement current IUPAC recommendations. The new parameterization is as follows (the explanations for symbols are in the Appendix): (Formula presented) All parameters used in the paper are summarized in Table A1. Using this new equation, field data from a field campaign were used to evaluate the impact of the HO2 uptake onto aerosols on the ROx (=OH+HO2 CRO2) budget. Highly variable values for HO2 uptake were obtained for the North China Plain (median value <0.1). © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	accuracy assessment; aerosol composition; atmospheric chemistry; concentration (composition); copper; hydroxyl radical; parameterization; peroxy radical; relative humidity; water content; China; North China Plain
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/247263
作者单位	State Key Joint Laboratory or Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China; International Joint Laboratory for Regional Pollution Control, Julich, Germany; Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Julich GmbH, Julich, Germany; Leibniz Institute for Tropospheric Research, Leipzig, 04318, Germany; School of Chemistry, University of Leeds, Leeds, LS2 9JT, United Kingdom; LISA, Universite Paris-Est Creteil, Universite de Paris, Faculte des Sciences et Technologie, 61 avenue du General de Gaulle, Creteil, CEDEX, 94010, France; Universidad de Castilla-La Mancha, Escuela de Ingenieria Industrial y Aeroespacial de Toledo, Toledo, 45071, Spain
推荐引用方式 GB/T 7714	Song H.,Chen X.,Lu K.,et al. Influence of aerosol copper on HO2 uptake: A novel parameterized equation[J],2020,20(24).
APA	Song H..,Chen X..,Lu K..,Zou Q..,Tan Z..,...&Zhang Y..(2020).Influence of aerosol copper on HO2 uptake: A novel parameterized equation.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(24).
MLA	Song H.,et al."Influence of aerosol copper on HO2 uptake: A novel parameterized equation".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.24(2020).