气候变化领域集成服务门户(CCPortal): Chemically speciated mass size distribution, particle density, shape and origin of non-refractory PM1 measured at a rural background site in central Europe

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DOI	10.5194/acp-22-5829-2022
	Chemically speciated mass size distribution, particle density, shape and origin of non-refractory PM1 measured at a rural background site in central Europe
	Pokorna, Petra; Zikova, Nadezda; Vodicka, Petr; Lhotka, Radek; Mbengue, Saliou; Smejkalova, Adela Holubova; Riffault, Veronique; Ondracek, Jakub; Schwarz, Jaroslav; Zdimal, Vladimir
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	5829
结束页码	5858
卷号	22 期号:9 页码:30
英文摘要	Seasonal variability of non-refractory PM1 (NR-PM1) was studied at a rural background site (National Atmospheric Observatory Kogetice - NAOK) in the Czech Republic to investigate the effect of regional and long-range atmospheric transport in central Europe. NR-PM1 measurements were performed by compact time-of-flight aerosol mass spectrometry (C-ToF-AMS), and the chemically speciated mass size distributions, density, shape, and origin were discussed. Average PM1 concentrations, calculated as the sum of the NR-PM1 and the equivalent black carbon (eBC) concentrations measured by an aethalometer (AE), were 8.58 +/- 3.70 mu g m(-3) in summer and 10.08 +/- 8.04 mu g m(-3) in winter. Organics were dominant during both campaigns (summer/winter: 4.97 +/- 2.92/4.55 +/- 4.40 mu g m(-3)), followed by SO42- in summer (1.68 +/- 0.81/1.36 +/- 1.38 mu g m(-3)) and NOT in winter (0.67 +/- 0.38/2.03 +/- 1.71 mu g m(-3)). The accumulation mode dominated the average mass size distribution during both seasons, with larger particles of all species measured in winter (mode diameters: Org: 334/413 nm, NO3- : 377/501 nm, SO42- : 400/547 nm, and NH4+ : 489/515 nm) indicating regional and long-range transport. However, since the winter aerosols were less oxidized than the summer aerosols (comparing fragments f(44) and f(43)), the importance of local sources in the cold part of the year was still enough to be considered. Although aged continental air masses from the south-east (SE) were rare in summer (7 %), they were related to the highest concentrations of PM1, eBC, and all NR-PM1 species, especially SO42- and NH4+. In winter, slow continental air masses from the south-west (SW) (44 %) were linked to inversion conditions over central Europe and were associated with the highest concentrations among all NR-PM1 species as well as PM1 and eBC. Average PM1 material density (rho(m)) corresponded to higher inorganic contents in both seasons (summer similar to 1.30 g cm(-3) and winter: similar to 1.40 g cm(-3)). During episodes of higher mass concentrations rho(m) ranged from 1.30-1.40 g cm(-3) in summer and from 1.30-1.50 g cm(-3) in winter. The dynamic shape factors (chi) decreased slightly with particle mobility diameter (D-m) in both seasons. This study provides insights into the seasonal effects and air mass variability on aerosol particles, focusing on episodes of high mass and number concentrations measured at a central European rural background site.
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:000790345000001
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/273929
作者单位	Czech Academy of Sciences; Institute of Chemical Process Fundamentals of the Czech Academy of Sciences; Charles University Prague; Czech Academy of Sciences; Global Change Research Centre of the Czech Academy of Sciences; Czech Hydrometeorological Institute; IMT - Institut Mines-Telecom; IMT Nord Europe; Universite de Lille - ISITE; Universite de Lille
推荐引用方式 GB/T 7714	Pokorna, Petra,Zikova, Nadezda,Vodicka, Petr,et al. Chemically speciated mass size distribution, particle density, shape and origin of non-refractory PM1 measured at a rural background site in central Europe[J],2022,22(9):30.
APA	Pokorna, Petra.,Zikova, Nadezda.,Vodicka, Petr.,Lhotka, Radek.,Mbengue, Saliou.,...&Zdimal, Vladimir.(2022).Chemically speciated mass size distribution, particle density, shape and origin of non-refractory PM1 measured at a rural background site in central Europe.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(9),30.
MLA	Pokorna, Petra,et al."Chemically speciated mass size distribution, particle density, shape and origin of non-refractory PM1 measured at a rural background site in central Europe".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.9(2022):30.