气候变化领域集成服务门户(CCPortal): Elevated particulate methanesulfonate, oxalate and iron over Sydney Harbour in the austral summer of 2019-20 during unprecedented bushfire activity

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DOI	10.1016/j.atmosenv.2021.118739
	Elevated particulate methanesulfonate, oxalate and iron over Sydney Harbour in the austral summer of 2019-20 during unprecedented bushfire activity
	Swan H.B.; Ivey J.P.
发表日期	2021
ISSN	1352-2310
卷号	266
英文摘要	In the austral summer period, Dec 7, 2019 to Mar 1, 2020, which included unprecedented bushfire activity, total suspended particulate concentrations of methanesulfonate (MSA), oxalate, labile iron, SO42−, Cl−, Na+, K+, NH4+, water soluble solids (WSS) and water soluble organic carbon (WSOC) were measured from weekly filter samples at Seaforth on the northern edge of Sydney Harbour. Particle number concentrations (PNC) and meteorological conditions were also measured at hourly intervals. These entities were previously measured in the spring-summer period, Sep 30, 2018 to Feb 24, 2019. Data analysis is focussed on inter-comparison between the summer of 2018–19 (S1) and 2019–20 (S2) spanning the period 7 Dec to 24 Feb. During S2 seasonally averaged MSA, oxalate, labile iron, K+, PNC (0.5–2.5 μm), and WSOC were elevated by 102%, 57%, 64%, 72%, 108%, and 1907%, respectively, by comparison to S1. Aqueous phase secondary formation of oxalate and a marine source of MSA were evident during S1; however, during S2 it was indicated that the bushfires created conditions where oxalate formation was shifted away from aqueous phase processing and MSA became associated with bushfire generated WSOC aerosol. Correlation changes at the a = 0.05 significance level between S1 and S2 for MSA, and for oxalate, are examined and discussed in relation to effects apparently caused by the bushfires. It is indicated that the biogeochemical cycling of sulfur and carbon, and particulate deposition of iron micronutrient to the South Pacific Ocean, may be altered by bushfires in Australia. © 2021 Elsevier Ltd
关键词	Bushfires Dust Iron Methanesulfonate Oxalate Sydney harbour
语种	英语
scopus关键词	Organic carbon; Oxalic acid; Austral summers; Bushfires; Labile irons; Methanesulfonates; Particle number concentration; Particulates; Sydney Harbour; Total suspended particulates; Water-soluble organic carbon; Watersoluble; Iron; ammonia; carbon; chloride ion; iron; mesylic acid; organic carbon; oxalic acid; potassium ion; sodium ion; sulfur; trace element; water; bushfire; carbon cycle; iron; organic carbon; oxalate; sulfur cycle; trace element; aerosol; air analysis; Article; Australia; biogeochemical cycling; biomass; combustion; concentration (parameter); data analysis; dust storm; meteorology; Pacific Ocean; plume; spring; summer; suspended particulate matter; wildfire; Australia; Pacific Ocean; Pacific Ocean; Pacific Ocean (South); Sydney Harbour [New South Wales]; Sydney [New South Wales]
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248210
作者单位	Southern Cross University Faculty of Science and Engineering, Centre for Coastal Biogeochemistry, Australia; Southern Cross University Faculty of Science and Engineering, National Marine Science Centre, Australia
推荐引用方式 GB/T 7714	Swan H.B.,Ivey J.P.. Elevated particulate methanesulfonate, oxalate and iron over Sydney Harbour in the austral summer of 2019-20 during unprecedented bushfire activity[J],2021,266.
APA	Swan H.B.,&Ivey J.P..(2021).Elevated particulate methanesulfonate, oxalate and iron over Sydney Harbour in the austral summer of 2019-20 during unprecedented bushfire activity.ATMOSPHERIC ENVIRONMENT,266.
MLA	Swan H.B.,et al."Elevated particulate methanesulfonate, oxalate and iron over Sydney Harbour in the austral summer of 2019-20 during unprecedented bushfire activity".ATMOSPHERIC ENVIRONMENT 266(2021).