气候变化领域集成服务门户(CCPortal): Atmospheric VOC measurements at a High Arctic site: Characteristics and source apportionment

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DOI	10.5194/acp-21-2895-2021
	Atmospheric VOC measurements at a High Arctic site: Characteristics and source apportionment
	Pernov J.B.; Bossi R.; Lebourgeois T.; Nøjgaard J.K.; Holzinger R.; Hjorth J.L.; Skov H.
发表日期	2021
ISSN	1680-7316
起始页码	2895
结束页码	2916
卷号	21 期号:4
英文摘要	There are few long-Term datasets of volatile organic compounds (VOCs) in the High Arctic. Furthermore, knowledge about their source regions remains lacking. To address this matter, we report a multiseason dataset of highly time-resolved VOC measurements in the High Arctic from April to October 2018. We have utilized a combination of measurement and modeling techniques to characterize the mixing ratios, temporal patterns, and sources of VOCs at the Villum Research Station at Station Nord in northeastern Greenland. Atmospheric VOCs were measured using protontransfer-reaction time-of-flight mass spectrometry. Ten ions were selected for source apportionment with the positive matrix factorization (PMF) receptor model. A four-factor solution to the PMF model was deemed optimal. The factors identified were biomass burning, marine cryosphere, background, and Arctic haze. The biomass burning factor described the variation of acetonitrile and benzene and peaked during August and September. The marine cryosphere factor was comprised of carboxylic acids (formic, acetic, and C3H6O2) as well as dimethyl sulfide (DMS). This factor displayed peak contributions during periods of snow and sea ice melt. A potential source contribution function (PSCF) showed that the source regions for this factor were the coasts around southeastern and northeastern Greenland. The background factor was temporally ubiquitous, with a slight decrease in the summer. This factor was not driven by any individual chemical species. The Arctic haze factor was dominated by benzene with contributions from oxygenated VOCs. This factor exhibited a maximum in the spring and minima during the summer and autumn. This temporal pattern and species profile are indicative of anthropogenic sources in the midlatitudes. This study provides seasonal characteristics and sources of VOCs and can help elucidate the processes affecting the atmospheric chemistry and biogeochemical feedback mechanisms in the High Arctic. © 2021 American Society of Mechanical Engineers (ASME). All rights reserved.
语种	英语
scopus关键词	atmospheric chemistry; data set; mass spectrometry; matrix; mixing ratio; source apportionment; temporal variation; volatile organic compound; Arctic; Greenland
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/247113
作者单位	Department of Environmental Science, ICLIMATE, Aarhus University, Roskilde, Denmark; Ecole Normale Supérieure, Department of Geosciences, Psl Research University, Paris, France; National Research Centre for the Working Environment, Copenhagen, Denmark; Institute for Marine and Atmospheric Research, Utrecht University, Netherlands
推荐引用方式 GB/T 7714	Pernov J.B.,Bossi R.,Lebourgeois T.,et al. Atmospheric VOC measurements at a High Arctic site: Characteristics and source apportionment[J],2021,21(4).
APA	Pernov J.B..,Bossi R..,Lebourgeois T..,Nøjgaard J.K..,Holzinger R..,...&Skov H..(2021).Atmospheric VOC measurements at a High Arctic site: Characteristics and source apportionment.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(4).
MLA	Pernov J.B.,et al."Atmospheric VOC measurements at a High Arctic site: Characteristics and source apportionment".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.4(2021).