Oxidized organic molecules in the tropical free troposphere over Amazonia

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外文摘要：New particle formation(NPF)in the tropical free troposphere(FT)is a globally important source of cloud condensation nuclei,affecting cloud properties and climate.Oxidized organic molecules(OOMs)produced from biogenic volatile organic compounds are believed to contribute to aerosol formation in the tropical FT,but without direct chemical observations.We performed in situ molecular-level OOMs measurements at the Bolivian station Chacaltaya at 5240 m above sea level,on the western edge of Amazonia.For the first time,we demonstrate the presence of OOMs,mainly with 4-5 carbon atoms,in both gas-phase and particle-phase(in terms of mass contribution)measurements in tropical FT air from Amazonia.These observations,combined with air mass history analyses,indicate that the observed OOMs are linked to isoprene emitted from the rainforests hundreds of kilometers away.Based on particle-phase measurements,we find that these compounds can contribute to NPF,at least the growth of newly formed nanoparticles,in the tropical FT on a continental scale.Thus,our study is a fundamental and significant step in understanding the aerosol formation process in the tropical FT.

外文关键词：

oxidized organic moleculestropical aerosol formationAmazonfree troposphere

作者：

Qiaozhi Zha、Diego Aliaga、Radovan Krejci、Victoria A.Sinclair、Cheng Wu、Giancarlo Ciarelli、Wiebke Scholz、Liine Heikkinen、Eva Partoll、Yvette Gramlich、Wei Huang、Markus Leiminger、Joonas Enroth、Otso Per?kyl?、Runlong Cai、Xuemeng Chen、Alkuin Maximilian Koenig、Fernando Velarde、Isabel Moreno、Tuukka Pet?j?、Paulo Artaxo、Paolo Laj、Armin Hansel、Samara Carbone、Markku Kulmala、Marcos Andrade、Douglas Worsnop、Claudia Mohr、Federico Bianchi

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作者单位：

Institute for Atmospheric and Earth System Research/Physics,University of Helsinki,Helsinki 00014,Finland

Joint International Research Laboratory of Atmospheric and Earth System Sciences,Nanjing University,Nanjing 210023,China:3 Department of Environmental Science &Bolin Centre for Climate Research,Stockholm University,Stockholm,SE-106 91,Sweden

Department of Chemistry and Molecular Biology,University of Gothenburg,Gothenburg 40530,Sweden

Institute for Ion and Applied Physics,University of Innsbruck,Innsbruck 6020,Austria

Ionicon Analytik GmbH,Innsbruck 6020,Austria

Laboratory for Atmospheric Physics,Institute for Physics Research,Universidad Mayor de San Andrés,La Paz,Bolivia

Institute of Physics,University of Sao Paulo,Sao Paulo 05508-900,Brazil

Institute for Geosciences and Environmental Research(IGE),University of Grenoble Alpes,Grenoble 38000,France:10Agrarian Sciences Institute,Federal University of Uberlândia,Uberlândia 38408-100,Brazil

Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China

Department of Atmospheric and Oceanic Sciences,University of Maryland,College Park,MD 20742,USA

Aerodyne Research,Inc.,Billerica,MA 01821,USA

Department of Environmental System Science,ETH Zürich,Zürich 8092,Switzerland

Switzerland and Laboratory of Atmospheric Chemistry,Paul Scherrer Institute,Villigen 5232,Switzerland

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基金：

European Union(EU)H2020 program via European Research CouncilEuropean Union(EU)H2020 program via European Research CouncilMarie Sldodowska CurieFinnish Centre of Excellence as well as the Academy of FinlandFinnish Centre of Excellence as well as the Academy of FinlandFinnish Centre of Excellence as well as the Academy of FinlandKnut and Alice Wallenberg Foundation(WAF project CLOUDFORM ）FAPESP—Funda??o de Amparo à Pesquisa do Estado de Sāo Paulo

项目编号：

CHAPAs 850614ATM-GTP 742206CLOUD-MOTION 7649913119323152033375492017.01652017/17047-0

出版年：

2024

DOI：

10.1093/nsr/nwad138

国家科学评论(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.11(1)

参考文献量55