A 3D study on the amplification of regional haze and particle growth by local emissions

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dc.contributor.author Du, Wei
dc.contributor.author Dada, Lubna
dc.contributor.author Zhao, Jian
dc.contributor.author Chen, Xueshun
dc.contributor.author Dällenbach, Kaspar
dc.contributor.author Xie, Conghui
dc.contributor.author Wang, Weigang
dc.contributor.author He, Yao
dc.contributor.author Cai, Jing
dc.contributor.author Yao, Lei
dc.contributor.author Zhang, Yingjie
dc.contributor.author Wang, Qingqing
dc.contributor.author Xu, Weiqi
dc.contributor.author Wang, Yuying
dc.contributor.author Tang, Guiqian
dc.contributor.author Cheng, Xueling
dc.contributor.author Kokkonen, Tom V.
dc.contributor.author Zhou, Wei
dc.contributor.author Yan, Chao
dc.contributor.author Chu, Biwu
dc.contributor.author Zha, Qiaozhi
dc.contributor.author Hakala, Simo
dc.contributor.author Kurppa, Mona
dc.contributor.author Jarvi, Leena
dc.contributor.author Liu, Yongchun
dc.contributor.author Li, Zhanqing
dc.contributor.author Ge, Maofa
dc.contributor.author Fu, Pingqing
dc.contributor.author Nie, Wei
dc.contributor.author Bianchi, Federico
dc.contributor.author Petäjä, Tuukka
dc.contributor.author Paasonen, Pauli
dc.contributor.author Wang, Zifa
dc.contributor.author Worsnop, Douglas R.
dc.contributor.author Kerminen, Veli-Matti
dc.contributor.author Kulmala, Markku
dc.contributor.author Sun, Yele
dc.date.accessioned 2021-03-25T17:39:02Z
dc.date.available 2021-03-25T17:39:02Z
dc.date.issued 2021-01-18
dc.identifier.citation Du , W , Dada , L , Zhao , J , Chen , X , Dällenbach , K , Xie , C , Wang , W , He , Y , Cai , J , Yao , L , Zhang , Y , Wang , Q , Xu , W , Wang , Y , Tang , G , Cheng , X , Kokkonen , T V , Zhou , W , Yan , C , Chu , B , Zha , Q , Hakala , S , Kurppa , M , Jarvi , L , Liu , Y , Li , Z , Ge , M , Fu , P , Nie , W , Bianchi , F , Petäjä , T , Paasonen , P , Wang , Z , Worsnop , D R , Kerminen , V-M , Kulmala , M & Sun , Y 2021 , ' A 3D study on the amplification of regional haze and particle growth by local emissions ' , npj climate and atmospheric science , vol. 4 , no. 1 , 4 . https://doi.org/10.1038/s41612-020-00156-5
dc.identifier.other PURE: 161503925
dc.identifier.other PURE UUID: ffd00fd0-25b5-4237-98c9-5b4d0ba060da
dc.identifier.other WOS: 000608736500001
dc.identifier.other Scopus: 85100166388
dc.identifier.other ORCID: /0000-0002-4625-9590/work/91247910
dc.identifier.other ORCID: /0000-0003-2538-1068/work/91249578
dc.identifier.other ORCID: /0000-0003-1105-9043/work/91249773
dc.identifier.other ORCID: /0000-0003-2996-3604/work/91249806
dc.identifier.other ORCID: /0000-0002-4804-7516/work/91249822
dc.identifier.other ORCID: /0000-0002-1185-9211/work/91249867
dc.identifier.other ORCID: /0000-0001-6301-7086/work/91250151
dc.identifier.other ORCID: /0000-0002-2680-1629/work/91250234
dc.identifier.other ORCID: /0000-0002-1881-9044/work/102822969
dc.identifier.uri http://hdl.handle.net/10138/328366
dc.description.abstract The role of new particle formation (NPF) events and their contribution to haze formation through subsequent growth in polluted megacities is still controversial. To improve the understanding of the sources, meteorological conditions, and chemistry behind air pollution, we performed simultaneous measurements of aerosol composition and particle number size distributions at ground level and at 260 m in central Beijing, China, during a total of 4 months in 2015-2017. Our measurements show a pronounced decoupling of gas-to-particle conversion between the two heights, leading to different haze processes in terms of particle size distributions and chemical compositions. The development of haze was initiated by the growth of freshly formed particles at both heights, whereas the more severe haze at ground level was connected directly to local primary particles and gaseous precursors leading to higher particle growth rates. The particle growth creates a feedback loop, in which a further development of haze increases the atmospheric stability, which in turn strengthens the persisting apparent decoupling between the two heights and increases the severity of haze at ground level. Moreover, we complemented our field observations with model analyses, which suggest that the growth of NPF-originated particles accounted up to similar to 60% of the accumulation mode particles in the Beijing-Tianjin-Hebei area during haze conditions. The results suggest that a reduction in anthropogenic gaseous precursors, suppressing particle growth, is a critical step for alleviating haze although the number concentration of freshly formed particles (3-40 nm) via NPF does not reduce after emission controls. en
dc.format.extent 8
dc.language.iso eng
dc.relation.ispartof npj climate and atmospheric science
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject GROUND-LEVEL
dc.subject POLLUTION
dc.subject TRANSPORT
dc.subject EPISODES
dc.subject 114 Physical sciences
dc.title A 3D study on the amplification of regional haze and particle growth by local emissions en
dc.type Article
dc.contributor.organization Air quality research group
dc.contributor.organization INAR Physics
dc.contributor.organization Institute for Atmospheric and Earth System Research (INAR)
dc.contributor.organization Urban meteorology
dc.contributor.organization Helsinki Institute of Sustainability Science (HELSUS)
dc.contributor.organization Helsinki Institute of Urban and Regional Studies (Urbaria)
dc.contributor.organization Faculty of Science
dc.contributor.organization Polar and arctic atmospheric research (PANDA)
dc.contributor.organization Global Atmosphere-Earth surface feedbacks
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1038/s41612-020-00156-5
dc.relation.issn 2397-3722
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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