气候变化领域集成服务门户(CCPortal): Modelling SO2 conversion into sulfates in the mid-troposphere with a 3D chemistry transport model: the case of Mount Etna's eruption on 12 April 2012

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DOI	10.5194/acp-22-13861-2022
	Modelling SO2 conversion into sulfates in the mid-troposphere with a 3D chemistry transport model: the case of Mount Etna's eruption on 12 April 2012
	Lachatre, Mathieu; Mailler, Sylvain; Menut, Laurent; Cholakian, Arineh; Sellitto, Pasquale; Siour, Guillaume; Guermazi, Henda; Salerno, Giuseppe; Giammanco, Salvatore
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13861
结束页码	13879
卷号	22 期号:20 页码:19
英文摘要	Volcanic activity is an important source of atmospheric sulfur dioxide (SO2), which, after conversion into sulfuric acid, induces impacts on rain acidity, human health, meteorology and the radiative balance of the atmosphere, among others. This work focuses on the conversion of SO2 into sulfates (SO4(p)2-, S (+VI)) in the midtropospheric volcanic plume emitted by the explosive eruption of Mount Etna (Italy) on 12 April 2012, using the CHIMERE chemistry transport model. As the volcanic plume location and composition depend on several often poorly constrained parameters, using a chemistry transport model allows us to study the sensitivity of SO2 oxidation to multiple aspects, such as volcanic water emissions, transition metal emissions, plume diffusion and plume altitude. Our results show that two pathways contribute to sulfate production in the mid-troposphere: (1) the oxidation of SO2 by OH in the gaseous phase (70 %) and (2) aqueous oxidation by O-2 catalysed by Mn(2+ )and Fe3+ ions (25 %). Oxidation in the aqueous phase is the faster process, but liquid water is scarce in the mid-troposphere; therefore, the relative share of gaseous oxidation can be important. After 1 d in the midtroposphere, about 0.5 % of the volcanic SO2 was converted to sulfates via the gaseous process. Because of the nonlinear dependency of the kinetics in the aqueous phase on the amount of volcanic water emitted and on the availability of transition metals in the aqueous phase, several experiments have been designed to determine the prominence of different parameters. Our simulations show that, during the short time that liquid water remains in the plume, around 0.4 % of sulfates manage to quickly enter the liquid phase. Sensitivity tests regarding the advection scheme have shown that this scheme must be chosen wisely, as dispersion will impact both of the oxidation pathways explained above.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000874785600001
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/273035
作者单位	Centre National de la Recherche Scientifique (CNRS); Ecole des Ponts ParisTech; Institut Polytechnique de Paris; UDICE-French Research Universities; Sorbonne Universite; Ecole des Ponts ParisTech; Universite Gustave-Eiffel; Universite Paris-Est-Creteil-Val-de-Marne (UPEC); Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Universite Paris Cite; Universite Gustave-Eiffel; Universite Paris-Est-Creteil-Val-de-Marne (UPEC); Istituto Nazionale Geofisica e Vulcanologia (INGV)
推荐引用方式 GB/T 7714	Lachatre, Mathieu,Mailler, Sylvain,Menut, Laurent,et al. Modelling SO2 conversion into sulfates in the mid-troposphere with a 3D chemistry transport model: the case of Mount Etna's eruption on 12 April 2012[J],2022,22(20):19.
APA	Lachatre, Mathieu.,Mailler, Sylvain.,Menut, Laurent.,Cholakian, Arineh.,Sellitto, Pasquale.,...&Giammanco, Salvatore.(2022).Modelling SO2 conversion into sulfates in the mid-troposphere with a 3D chemistry transport model: the case of Mount Etna's eruption on 12 April 2012.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),19.
MLA	Lachatre, Mathieu,et al."Modelling SO2 conversion into sulfates in the mid-troposphere with a 3D chemistry transport model: the case of Mount Etna's eruption on 12 April 2012".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):19.