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DOI10.5194/acp-19-14755-2019
Six-year source apportionment of submicron organic aerosols from near-continuous highly time-resolved measurements at SIRTA (Paris area; France)
Zhang Y.; Favez O.; Petit J.-E.; Canonaco F.; Truong F.; Bonnaire N.; Crenn V.; Amodeo T.; Prévôt A.S.H.; Sciare J.; Gros V.; Albinet A.
发表日期2019
ISSN16807316
起始页码14755
结束页码14776
卷号19期号:23
英文摘要Organic aerosol (OA) particles are recognized as key factors influencing air quality and climate change. However, highly time-resolved long-term characterizations of their composition and sources in ambient air are still very limited due to challenging continuous observations. Here, we present an analysis of long-term variability of submicron OA using the combination of an aerosol chemical speciation monitor (ACSM) and a multiwavelength Aethalometer from November 2011 to March 2018 at a peri-urban background site of the Paris region (France). Source apportionment of OA was achieved via partially constrained positive matrix factorization (PMF) using the multilinear engine (ME-2). Two primary OA (POA) and two oxygenated OA (OOA) factors were identified and quantified over the entire studied period. POA factors were designated as hydrocarbon-like OA (HOA) and biomass burning OA (BBOA). The latter factor presented a significant seasonality with higher concentrations in winter with significant monthly contributions to OA (18 %-33 %) due to enhanced residential wood burning emissions. HOA mainly originated from traffic emissions but was also influenced by biomass burning in cold periods. OOA factors were distinguished between their less- and more-oxidized fractions (LO-OOA and MO-OOA, respectively). These factors presented distinct seasonal patterns, associated with different atmospheric formation pathways. A pronounced increase in LO-OOA concentrations and contributions (50 %-66 %) was observed in summer, which may be mainly explained by secondary OA (SOA) formation processes involving biogenic gaseous precursors. Conversely, high concentrations and OA contributions (32 %-62 %) of MO-OOA during winter and spring seasons were partly associated with anthropogenic emissions and/or long-range transport from northeastern Europe. The contribution of the different OA factors as a function of OA mass loading highlighted the dominant roles of POA during pollution episodes in fall and winter and of SOA for highest springtime and summertime OA concentrations. Finally, long-term trend analyses indicated a decreasing feature (of about -175 ng m-3 yr-1) for MO-OOA, very limited or insignificant decreasing trends for primary anthropogenic carbonaceous aerosols (BBOA and HOA, along with the fossil-fuel and biomass-burning black carbon components) and no statistically significant trend for LO-OOA over the 6-year investigated period. © 2020 BMJ Publishing Group. All rights reserved.
语种英语
scopus关键词aerosol composition; aerosol formation; biomass burning; concentration (composition); numerical model; periurban area; source apportionment; speciation (chemistry); trend analysis; France; Ile de France; Paris; Ville de Paris
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/143994
作者单位Institut National de l'Environnement Industriel et des Risques, Verneuil-en-Halatte, France; Laboratoire des Sciences du Climat et de l'Environnement, CNRS-CEA-UVSQ, IPSL, Université Paris-Saclay, Gif-sur-Yvette, France; Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen PSI, Switzerland; Energy Environment and Water Research Center, Cyprus Institute, Nicosia, Cyprus; ADDAIR, Buc, France
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GB/T 7714
Zhang Y.,Favez O.,Petit J.-E.,et al. Six-year source apportionment of submicron organic aerosols from near-continuous highly time-resolved measurements at SIRTA (Paris area; France)[J],2019,19(23).
APA Zhang Y..,Favez O..,Petit J.-E..,Canonaco F..,Truong F..,...&Albinet A..(2019).Six-year source apportionment of submicron organic aerosols from near-continuous highly time-resolved measurements at SIRTA (Paris area; France).Atmospheric Chemistry and Physics,19(23).
MLA Zhang Y.,et al."Six-year source apportionment of submicron organic aerosols from near-continuous highly time-resolved measurements at SIRTA (Paris area; France)".Atmospheric Chemistry and Physics 19.23(2019).
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