Relating the hygroscopic properties of submicron aerosol to both gas- and particle-phase chemical composition in a boreal forest environment

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dc.contributor.author Hong, J.
dc.contributor.author Kim, J.
dc.contributor.author Nieminen, T.
dc.contributor.author Duplissy, J.
dc.contributor.author Ehn, M.
dc.contributor.author Äijälä, M.
dc.contributor.author Hao, L. Q.
dc.contributor.author Nie, W.
dc.contributor.author Sarnela, N.
dc.contributor.author Prisle, N. L.
dc.contributor.author Kulmala, M.
dc.contributor.author Virtanen, A.
dc.contributor.author Petäjä, T.
dc.contributor.author Kerminen, V. -M.
dc.date.accessioned 2016-01-15T14:43:01Z
dc.date.available 2016-01-15T14:43:01Z
dc.date.issued 2015
dc.identifier.citation Hong , J , Kim , J , Nieminen , T , Duplissy , J , Ehn , M , Äijälä , M , Hao , L Q , Nie , W , Sarnela , N , Prisle , N L , Kulmala , M , Virtanen , A , Petäjä , T & Kerminen , V -M 2015 , ' Relating the hygroscopic properties of submicron aerosol to both gas- and particle-phase chemical composition in a boreal forest environment ' , Atmospheric Chemistry and Physics , vol. 15 , no. 20 , pp. 11999-12009 . https://doi.org/10.5194/acp-15-11999-2015
dc.identifier.other PURE: 56828595
dc.identifier.other PURE UUID: 220da91e-c75a-41ad-a4eb-36cdab04b91b
dc.identifier.other WOS: 000364316800031
dc.identifier.other Scopus: 84945918406
dc.identifier.other ORCID: /0000-0003-1874-3235/work/64324416
dc.identifier.other ORCID: /0000-0002-1881-9044/work/102822585
dc.identifier.uri http://hdl.handle.net/10138/159446
dc.description.abstract Measurements of the hygroscopicity of 15145 nm particles in a boreal forest environment were conducted using two Hygroscopicity Tandem Differential Mobility Analyzer (HTDMA) systems during the Pan-European Gas-Aerosols-climate interaction Study (PEGASOS) campaign in spring 2013. Measurements of the chemical composition of non-size segregated particles were also performed using a high-resolution aerosol mass spectrometer (HR-AMS) in parallel with hygroscopicity measurements. On average, the hygroscopic growth factor (HGF) of particles was observed to increase from the morning until afternoon. In case of accumulation mode particles, the main reasons for this behavior were increases in the ratio of sulfate to organic matter and oxidation level (O : C ratio) of the organic matter in the particle phase. Using an O : C dependent hygroscopic growth factor of organic matter (HGF(org)), fitted using the inverse Zdanovskii-Stokes-Robinson (ZSR) mixing rule, clearly improved the agreement between measured HGF and that predicted based on HR-AMS composition data. Besides organic oxidation level, the influence of inorganic species was tested when using the ZSR mixing rule to estimate the hygroscopic growth factor of organics in the aerosols. While accumulation and Aitken mode particles were predicted fairly well by the bulk aerosol composition data, the hygroscopicity of nucleation mode particles showed little correlation. However, we observed them to be more sensitive to the gas phase concentration of condensable vapors: the more sulfuric acid in the gas phase, the more hygroscopic the nucleation mode particles were. No clear dependence was found between the extremely low-volatility organics concentration (ELVOC) and the HGF of particles of any size. en
dc.format.extent 11
dc.language.iso eng
dc.relation.ispartof Atmospheric Chemistry and Physics
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject SECONDARY ORGANIC AEROSOLS
dc.subject MASS-SPECTROMETER
dc.subject SULFURIC-ACID
dc.subject ATMOSPHERIC AEROSOL
dc.subject HIGH-RESOLUTION
dc.subject SMEAR-II
dc.subject GROWTH
dc.subject NUCLEATION
dc.subject CCN
dc.subject CALIBRATION
dc.subject 114 Physical sciences
dc.title Relating the hygroscopic properties of submicron aerosol to both gas- and particle-phase chemical composition in a boreal forest environment en
dc.type Article
dc.contributor.organization Department of Physics
dc.contributor.organization Helsinki Institute of Physics
dc.contributor.organization Aerosol-Cloud-Climate -Interactions (ACCI)
dc.contributor.organization Polar and arctic atmospheric research (PANDA)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.5194/acp-15-11999-2015
dc.relation.issn 1680-7316
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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