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DOI	10.5194/acp-22-13449-2022
	Hygroscopicity and CCN potential of DMS-derived aerosol particles
	Rosati, Bernadette; Isokaanta, Sini; Christiansen, Sigurd; Jensen, Mads Mork; Moosakutty, Shamjad P.; de Jonge, Robin Wollesen; Massling, Andreas; Glasius, Marianne; Elm, Jonas; Virtanen, Annele; Bilde, Merete
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13449
结束页码	13466
卷号	22 期号:20 页码:18
英文摘要	Dimethyl sulfide (DMS) is emitted by phytoplankton species in the oceans and constitutes the largest source of naturally emitted sulfur to the atmosphere. The climate impact of secondary particles, formed through the oxidation of DMS by hydroxyl radicals, is still elusive. This study investigates the hygroscopicity and cloud condensation nuclei activity of such particles and discusses the results in relation to their chemical composition. We show that mean hygroscopicity parameters, kappa, during an experiment for particles of 80 nm in diameter range from 0.46 to 0.52 or higher, as measured at both sub- and supersaturated water vapour conditions. Ageing of the particles leads to an increase in kappa from, for example, 0.50 to 0.58 over the course of 3 h (Exp. 7). Aerosol mass spectrometer measurements from this study indicate that this change most probably stems from a change in chemical composition leading to slightly higher fractions of ammonium sulfate compared to methanesulfonic acid (MSA) within the particles with ageing time. Lowering the temperature to 258 K increases kappa slightly, particularly for small particles. These kappa values are well comparable to previously reported model values for MSA or mixtures between MSA and ammonium sulfate. Particle nucleation and growth rates suggest a clear temperature dependence, with slower rates at cold temperatures. Quantum chemical calculations show that gas-phase MSA clusters are predominantly not hydrated, even at high humidity conditions, indicating that their gas-phase chemistry should be independent of relative humidity.
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:000869697900001
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/273484
作者单位	Aarhus University; University of Vienna; University of Eastern Finland; Stockholm University; Qatar Foundation (QF); Hamad Bin Khalifa University-Qatar; Qatar Environment & Energy Research Institute; Lund University; Aarhus University
推荐引用方式 GB/T 7714	Rosati, Bernadette,Isokaanta, Sini,Christiansen, Sigurd,et al. Hygroscopicity and CCN potential of DMS-derived aerosol particles[J],2022,22(20):18.
APA	Rosati, Bernadette.,Isokaanta, Sini.,Christiansen, Sigurd.,Jensen, Mads Mork.,Moosakutty, Shamjad P..,...&Bilde, Merete.(2022).Hygroscopicity and CCN potential of DMS-derived aerosol particles.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),18.
MLA	Rosati, Bernadette,et al."Hygroscopicity and CCN potential of DMS-derived aerosol particles".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):18.