气候变化领域集成服务门户(CCPortal): Measurement report: Black carbon properties and concentrations in southern Sweden urban and rural air

CCPortal

DOI	10.5194/acp-23-3051-2023
	Measurement report: Black carbon properties and concentrations in southern Sweden urban and rural air - the importance of long-range transport
	Ahlberg, Erik; Ausmeel, Stina; Nilsson, Lovisa; Spanne, Marten; Pauraite, Julija; Kleno Nojgaard, Jacob; Berto, Michele; Skov, Henrik; Roldin, Pontus; Kristensson, Adam; Swietlicki, Erik; Eriksson, Axel
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	3051
结束页码	3064
卷号	23 期号:5 页码:14
英文摘要	Soot, or black carbon (BC), aerosol is a major climate forcer with severe health effects. The impacts depend strongly on particle number concentration, size and mixing state. This work reports on two field campaigns at nearby urban and rural sites, 65 km apart, in southern Sweden during late summer 2018. BC was measured using a single-particle soot photometer (SP2) and Aethalometers (AE33). Differences in BC concentrations between the sites are driven primarily by local traffic emissions. Equivalent and refractory BC mass concentrations at the urban site were on average a factor 2.2 and 2.5, with peaks during rush hour up to a factor similar to 4, higher than the rural background levels. The number fraction of particles containing a soot core was significantly higher in the city. BC particles at the urban site were on average smaller by mass and had less coating owing to fresh traffic emissions. The organic components of the fresh traffic plumes were similar in mass spectral signature to hydrocarbon-like organic aerosol (HOA), commonly associated with traffic. Despite the intense local traffic (similar to 30000 vehicles passing per day), PM1, including organic aerosol, was dominated by aged continental air masses even at the curbside site. The fraction of thickly coated particles at the urban site was highly correlated with the mass concentrations of all measured chemical species of PM1, consistent with aged, internally mixed aerosol. Trajectory analysis for the whole year showed that air masses arriving at the rural site from eastern Europe contained approximately double the amount of BC compared to air masses from western Europe. Furthermore, the largest regional emissions of BC transported to the rural site, from the Malmo-Copenhagen urban area, are discernible above background levels only when precipitation events are excluded. We show that continental Europe and not the Malmo-Copenhagen region is the major contributor to the background BC mass concentrations in southern Sweden.
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:000946072600001
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/273030
作者单位	Lund University; Center for Physical Sciences & Technology - Lithuania; Aarhus University; Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; Lund University; National Research Centre for the Working Environment
推荐引用方式 GB/T 7714	Ahlberg, Erik,Ausmeel, Stina,Nilsson, Lovisa,et al. Measurement report: Black carbon properties and concentrations in southern Sweden urban and rural air - the importance of long-range transport[J],2023,23(5):14.
APA	Ahlberg, Erik.,Ausmeel, Stina.,Nilsson, Lovisa.,Spanne, Marten.,Pauraite, Julija.,...&Eriksson, Axel.(2023).Measurement report: Black carbon properties and concentrations in southern Sweden urban and rural air - the importance of long-range transport.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(5),14.
MLA	Ahlberg, Erik,et al."Measurement report: Black carbon properties and concentrations in southern Sweden urban and rural air - the importance of long-range transport".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.5(2023):14.