气候变化领域集成服务门户(CCPortal): Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphere

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DOI	10.5194/acp-22-8547-2022
	Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphere
	Beck, Lisa J.; Schobesberger, Siegfried; Junninen, Heikki; Lampilahti, Janne; Manninen, Antti; Dada, Lubna; Leino, Katri; He, Xu-Cheng; Pullinen, Iida; Quelever, Lauriane L. J.; Franck, Anna; Poutanen, Pyry; Wimmer, Daniela; Korhonen, Frans; Sipila, Mikko; Ehn, Mikael; Worsnop, Douglas R.; Kerminen, Veli-Matti; Petaja, Tuukka; Kulmala, Markku; Duplissy, Jonathan
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	8547
结束页码	8577
卷号	22 期号:13 页码:31
英文摘要	At SMEAR II research station in Hyytiala, located in the Finnish boreal forest, the process of new particle formation and the role of ions has been investigated for almost 20 years near the ground and at canopy level. However, above SMEAR II, the vertical distribution and diurnal variation of these different atmospheric ions are poorly characterized. In this study, we assess the atmospheric ion composition in the stable boundary layer, residual layer, mixing layer, and free troposphere, and the evolution of these atmospheric ions due to photochemistry and turbulent mixing through the day. To measure the vertical profile of atmospheric ions, we developed a tailored set-up for online mass spectrometric measurements, capable of being deployed in a Cessna 172 with minimal modifications. Simultaneously, instruments dedicated to aerosol properties made measurements in a second Cessna. We conducted a total of 16 measurement flights in May 2017, during the spring, which is the most active new particle formation season. A flight day typically consisted of three distinct flights through the day (dawn, morning, and afternoon) to observe the diurnal variation and at different altitudes (from 100 to 3200 m above ground), to capture the boundary layer development from the stable boundary layer, residual layer to mixing layer, and the free troposphere. Our observations showed that the ion composition is distinctly different in each layer and depends on the air mass origin and time of the day. Before sunrise, the layers are separated from each other and have their own ion chemistry. We observed that the ions present within the stable layer are of the same composition as the ions measured at the canopy level. During daytime when the mixing layer evolved and the compounds are vertically mixed, we observed that highly oxidized organic molecules are distributed to the top of the boundary layer. The ion composition in the residual layer varies with each day, showing similarities with either the stable boundary layer or the free troposphere. Finally, within the free troposphere, we detected a variety of carboxylic acids and ions that are likely containing halogens, originating from the Arctic Sea.
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:000821455600001
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/273680
作者单位	University of Helsinki; University of Eastern Finland; University of Tartu; University of Tartu Institute of Physics; Finnish Meteorological Institute; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; Aerodyne Research; Beijing University of Chemical Technology; Nanjing University; University of Helsinki
推荐引用方式 GB/T 7714	Beck, Lisa J.,Schobesberger, Siegfried,Junninen, Heikki,et al. Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphere[J],2022,22(13):31.
APA	Beck, Lisa J..,Schobesberger, Siegfried.,Junninen, Heikki.,Lampilahti, Janne.,Manninen, Antti.,...&Duplissy, Jonathan.(2022).Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphere.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(13),31.
MLA	Beck, Lisa J.,et al."Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphere".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.13(2022):31.