气候变化领域集成服务门户(CCPortal): An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloom

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DOI	10.5194/acp-22-6365-2022
	An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloom
	Thakur, Roseline C.; Dada, Lubna; Beck, Lisa J.; Quelever, Lauriane L. J.; Chan, Tommy; Marbouti, Marjan; He, Xu-Cheng; Xavier, Carlton; Sulo, Juha; Lampilahti, Janne; Lampimaki, Markus; Tham, Yee Jun; Sarnela, Nina; Lehtipalo, Katrianne; Norkko, Alf; Kulmala, Markku; Sipila, Mikko; Jokinen, Tuija
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	6365
结束页码	6391
卷号	22 期号:9 页码:27
英文摘要	Several studies have investigated new particle formation (NPF) events from various sites ranging from pristine locations, including forest sites, to urban areas. However, there is still a dearth of studies investigating NPF processes and subsequent aerosol growth in coastal yet semi-urban sites, where the tropospheric layer is a concoction of biogenic and anthropogenic gases and particles. The investigation of factors leading to NPF becomes extremely complex due to the highly dynamic meteorological conditions at the coastline especially when combined with both continental and oceanic weather conditions. Herein, we engage in a comprehensive study of particle number size distributions and aerosol-forming precursor vapors at the coastal semi-urban site in Helsinki, Finland. The measurement period, 25 June-18 August 2019, was timed with the recurring cyanobacterial summer bloom in the Baltic Sea region and coastal regions of Finland. Our study recorded several regional/local NPF and aerosol burst events during this period. Although the overall anthropogenic influence on sulfuric acid (SA) concentrations was low during the measurement period, we observed that the regional or local NPF events, characterized by SA concentrations on the order of 10(7) molec. cm(-3), occurred mostly when the air mass traveled over the land areas. Interestingly, when the air mass traveled over the Baltic Sea, an area enriched with algae and cyanobacterial blooms, high iodic acid (IA) concentration coincided with an aerosol burst or a spike event at the measurement site. Further, SA-rich bursts were seen when the air mass traveled over the Gulf of Bothnia, enriched with cyanobacterial blooms. The two most important factors affecting aerosol precursor vapor concentrations, and thus the aerosol formation, were speculated to be (1) the type of phytoplankton species and intensity of bloom present in the coastal regions of Finland and the Baltic Sea and (2) the wind direction. During the events, most of the growth of sub-3 nm particles was probably due to SA, rather than IA or methane sulfonic acid (MSA); however much of the particle growth remained unexplained indicative of the strong role of organics in the growth of particles, especially in the 3-7 nm particle size range. Further studies are needed to explore the role of organics in NPF events and the potential influence of cyanobacterial blooms in coastal locations.
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:000796614500001
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/273740
作者单位	University of Helsinki; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; Finnish Meteorological Institute; Beijing University of Chemical Technology; Nanjing University; University of Helsinki; Stockholm University; Sun Yat Sen University; Aalto University
推荐引用方式 GB/T 7714	Thakur, Roseline C.,Dada, Lubna,Beck, Lisa J.,et al. An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloom[J],2022,22(9):27.
APA	Thakur, Roseline C..,Dada, Lubna.,Beck, Lisa J..,Quelever, Lauriane L. J..,Chan, Tommy.,...&Jokinen, Tuija.(2022).An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloom.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(9),27.
MLA	Thakur, Roseline C.,et al."An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloom".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.9(2022):27.