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DOI	10.5194/acp-22-9245-2022
	Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO(4)(2-)) in the aerosol at Terra Nova Bay, Antarctica
	Becagli, Silvia; Barbaro, Elena; Bonamano, Simone; Caiazzo, Laura; di Sarra, Alcide; Feltracco, Matteo; Grigioni, Paolo; Heintzenberg, Jost; Lazzara, Luigi; Legrand, Michel; Madonia, Alice; Marcelli, Marco; Melillo, Chiara; Meloni, Daniela; Nuccio, Caterina; Pace, Giandomenico; Park, Ki-Tae; Preunkert, Suzanne; Severi, Mirko; Vecchiato, Marco; Zangrando, Roberta; Traversi, Rita
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	9245
结束页码	9263
卷号	22 期号:14 页码:19
英文摘要	This paper presents the results of simultaneous high time-resolution measurements of biogenic aerosol (methane sulfonic acid (MSA), non-sea salt sulfate nssSO(4)(2-)) with its gaseous precursor dimethylsulfide (DMS), performed at the Italian coastal base Mario Zucchelli Station (MZS) in Terra Nova Bay (MZS) during two summer campaigns (2018-2019 and 2019-2020). Data on atmospheric DMS concentration are scarce, especially in Antarctica. The DMS maximum at MZS occurs in December, one month earlier than at other Antarctic stations. The maximum of DMS concentration is connected with the phytoplanktonic senescent phase following the bloom of Phaeocystis antarctica that occurs in the polynya when sea ice opens up. The second plankton bloom occurs in January and, despite the high dimethylsufoniopropionate (DMSP) concentration in seawater, atmospheric DMS remains low, probably due to its fast biological turnover in seawater in this period. The intensity and timing of the DMS evolution during the two years suggest that only the portion of the polynya close to the sampling site produces a discernible effect on the measured DMS. The closeness to the DMS source area and the occurrence of air masses containing DMS and freshly formed oxidation products allow us to study the kinetic of biogenic aerosol formation and the reliable derivation of the branch ratio between MSA and nssSO(4)(2-) from DMS oxidation that is estimated to be 0.84 +/- 0.06. Conversely, for aged air masses with low DMS content, an enrichment of nssSO(4)(2-) with respect to MSA, is observed. We estimate that the mean contribution of freshly formed biogenic aerosol to PM10 is 17 % with a maximum of 56 %. The high contribution of biogenic aerosol to the total PM10 mass in summer in this area highlights the dominant role of the polynya on biogenic aerosol formation. Finally, due to the regional and year-to-year variability of DMS and related biogenic aerosol formation, we stress the need for long-term measurements of seawater and atmospheric DMS and biogenic aerosol along the Antarctic coast and in the Southern Ocean.
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:000826513700001
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/273177
作者单位	University of Florence; Consiglio Nazionale delle Ricerche (CNR); Istituto di Scienze Polari (ISP-CNR); Tuscia University; Leibniz Institut fur Tropospharenforschung (TROPOS); University of Florence; Centre National de la Recherche Scientifique (CNRS); Communaute Universite Grenoble Alpes; UDICE-French Research Universities; Universite Grenoble Alpes (UGA); UDICE-French Research Universities; Universite Paris Cite; Universite Paris-Est-Creteil-Val-de-Marne (UPEC); Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Universite Paris Cite; Universite Paris-Est-Creteil-Val-de-Marne (UPEC); Korea Polar Research Institute (KOPRI)
推荐引用方式 GB/T 7714	Becagli, Silvia,Barbaro, Elena,Bonamano, Simone,et al. Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO(4)(2-)) in the aerosol at Terra Nova Bay, Antarctica[J],2022,22(14):19.
APA	Becagli, Silvia.,Barbaro, Elena.,Bonamano, Simone.,Caiazzo, Laura.,di Sarra, Alcide.,...&Traversi, Rita.(2022).Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO(4)(2-)) in the aerosol at Terra Nova Bay, Antarctica.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(14),19.
MLA	Becagli, Silvia,et al."Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO(4)(2-)) in the aerosol at Terra Nova Bay, Antarctica".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.14(2022):19.