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Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland

Tutkimustuotosvertaisarvioitu

Standard

Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland. / Pirjola, Liisa; Niemi, Jarkko V.; Saarikoski, Sanna; Aurela, Minna; Enroth, Joonas; Carbone, Samara; Saarnio, Karri; Kuuluvainen, Heino; Kousa, Anu; Rönkkö, Topi; Hillamo, Risto.

julkaisussa: Atmospheric Environment, Vuosikerta 158, 01.06.2017, s. 60-75.

Tutkimustuotosvertaisarvioitu

Harvard

Pirjola, L, Niemi, JV, Saarikoski, S, Aurela, M, Enroth, J, Carbone, S, Saarnio, K, Kuuluvainen, H, Kousa, A, Rönkkö, T & Hillamo, R 2017, 'Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland', Atmospheric Environment, Vuosikerta. 158, Sivut 60-75. https://doi.org/10.1016/j.atmosenv.2017.03.028

APA

Pirjola, L., Niemi, J. V., Saarikoski, S., Aurela, M., Enroth, J., Carbone, S., ... Hillamo, R. (2017). Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland. Atmospheric Environment, 158, 60-75. https://doi.org/10.1016/j.atmosenv.2017.03.028

Vancouver

Pirjola L, Niemi JV, Saarikoski S, Aurela M, Enroth J, Carbone S et al. Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland. Atmospheric Environment. 2017 kesä 1;158:60-75. https://doi.org/10.1016/j.atmosenv.2017.03.028

Author

Pirjola, Liisa ; Niemi, Jarkko V. ; Saarikoski, Sanna ; Aurela, Minna ; Enroth, Joonas ; Carbone, Samara ; Saarnio, Karri ; Kuuluvainen, Heino ; Kousa, Anu ; Rönkkö, Topi ; Hillamo, Risto. / Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland. Julkaisussa: Atmospheric Environment. 2017 ; Vuosikerta 158. Sivut 60-75.

Bibtex - Lataa

@article{f1cf1473cbb64d5a84f7daf15b45727f,
title = "Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland",
abstract = "A two-week measurement campaign by a mobile laboratory van was performed in urban environments in the Helsinki metropolitan area, Finland, in winter 2012, to obtain a comprehensive view on aerosol properties and sources. The abundances and physico-chemical properties of particles varied strongly in time and space, depending on the main sources of aerosols. Four major types of winter aerosol were recognized: 1) clean background aerosol with low particle number (Ntot) and lung deposited surface area (LDSA) concentrations due to marine air flows from the Atlantic Ocean; 2) long-range transported (LRT) pollution aerosol due to air flows from eastern Europe where the particles were characterized by the high contribution of oxygenated organic aerosol (OOA) and inorganic species, particularly sulphate, but low BC contribution, and their size distribution possessed an additional accumulation mode; 3) fresh smoke plumes from residential wood combustion in suburban small houses, these particles were characterized by high biomass burning organic aerosol (BBOA) and black carbon (BC) concentrations; and 4) fresh emissions from traffic while driving on busy streets in the city centre and on the highways during morning rush hours. This aerosol was characterized by high concentration of Ntot, LDSA, small particles in the nucleation mode, as well as high hydrocarbon-like organic aerosol (HOA) and BC concentrations. In general, secondary components (OOA, NO3, NH4, and SO4) dominated the PM1 chemical composition during the LRT episode accounting for 70–80{\%} of the PM1 mass, whereas fresh primary emissions (BC, HOA and BBOA) dominated the local traffic and wood burning emissions. The major individual particle types observed with electron microscopy analysis (TEM/EDX) were mainly related to residential wood combustion (K/S/C-rich, soot, other C-rich particles), traffic (soot, Si/Al-rich, Fe-rich), heavy fuel oil combustion in heat plants or ships (S with V-Ni-Fe), LRT pollutants (S/C-rich secondary particles) and sea salt (Na/Cl-rich). Tar balls from wood combustion were also observed, especially (∼5{\%}) during the LRT pollution episode.",
keywords = "AMS, Black carbon, Mobile laboratory, Size distribution, Traffic, Wood burning",
author = "Liisa Pirjola and Niemi, {Jarkko V.} and Sanna Saarikoski and Minna Aurela and Joonas Enroth and Samara Carbone and Karri Saarnio and Heino Kuuluvainen and Anu Kousa and Topi R{\"o}nkk{\"o} and Risto Hillamo",
year = "2017",
month = "6",
day = "1",
doi = "10.1016/j.atmosenv.2017.03.028",
language = "English",
volume = "158",
pages = "60--75",
journal = "Atmospheric Environment",
issn = "1352-2310",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Physical and chemical characterization of urban winter-time aerosols by mobile measurements in Helsinki, Finland

AU - Pirjola, Liisa

AU - Niemi, Jarkko V.

AU - Saarikoski, Sanna

AU - Aurela, Minna

AU - Enroth, Joonas

AU - Carbone, Samara

AU - Saarnio, Karri

AU - Kuuluvainen, Heino

AU - Kousa, Anu

AU - Rönkkö, Topi

AU - Hillamo, Risto

PY - 2017/6/1

Y1 - 2017/6/1

N2 - A two-week measurement campaign by a mobile laboratory van was performed in urban environments in the Helsinki metropolitan area, Finland, in winter 2012, to obtain a comprehensive view on aerosol properties and sources. The abundances and physico-chemical properties of particles varied strongly in time and space, depending on the main sources of aerosols. Four major types of winter aerosol were recognized: 1) clean background aerosol with low particle number (Ntot) and lung deposited surface area (LDSA) concentrations due to marine air flows from the Atlantic Ocean; 2) long-range transported (LRT) pollution aerosol due to air flows from eastern Europe where the particles were characterized by the high contribution of oxygenated organic aerosol (OOA) and inorganic species, particularly sulphate, but low BC contribution, and their size distribution possessed an additional accumulation mode; 3) fresh smoke plumes from residential wood combustion in suburban small houses, these particles were characterized by high biomass burning organic aerosol (BBOA) and black carbon (BC) concentrations; and 4) fresh emissions from traffic while driving on busy streets in the city centre and on the highways during morning rush hours. This aerosol was characterized by high concentration of Ntot, LDSA, small particles in the nucleation mode, as well as high hydrocarbon-like organic aerosol (HOA) and BC concentrations. In general, secondary components (OOA, NO3, NH4, and SO4) dominated the PM1 chemical composition during the LRT episode accounting for 70–80% of the PM1 mass, whereas fresh primary emissions (BC, HOA and BBOA) dominated the local traffic and wood burning emissions. The major individual particle types observed with electron microscopy analysis (TEM/EDX) were mainly related to residential wood combustion (K/S/C-rich, soot, other C-rich particles), traffic (soot, Si/Al-rich, Fe-rich), heavy fuel oil combustion in heat plants or ships (S with V-Ni-Fe), LRT pollutants (S/C-rich secondary particles) and sea salt (Na/Cl-rich). Tar balls from wood combustion were also observed, especially (∼5%) during the LRT pollution episode.

AB - A two-week measurement campaign by a mobile laboratory van was performed in urban environments in the Helsinki metropolitan area, Finland, in winter 2012, to obtain a comprehensive view on aerosol properties and sources. The abundances and physico-chemical properties of particles varied strongly in time and space, depending on the main sources of aerosols. Four major types of winter aerosol were recognized: 1) clean background aerosol with low particle number (Ntot) and lung deposited surface area (LDSA) concentrations due to marine air flows from the Atlantic Ocean; 2) long-range transported (LRT) pollution aerosol due to air flows from eastern Europe where the particles were characterized by the high contribution of oxygenated organic aerosol (OOA) and inorganic species, particularly sulphate, but low BC contribution, and their size distribution possessed an additional accumulation mode; 3) fresh smoke plumes from residential wood combustion in suburban small houses, these particles were characterized by high biomass burning organic aerosol (BBOA) and black carbon (BC) concentrations; and 4) fresh emissions from traffic while driving on busy streets in the city centre and on the highways during morning rush hours. This aerosol was characterized by high concentration of Ntot, LDSA, small particles in the nucleation mode, as well as high hydrocarbon-like organic aerosol (HOA) and BC concentrations. In general, secondary components (OOA, NO3, NH4, and SO4) dominated the PM1 chemical composition during the LRT episode accounting for 70–80% of the PM1 mass, whereas fresh primary emissions (BC, HOA and BBOA) dominated the local traffic and wood burning emissions. The major individual particle types observed with electron microscopy analysis (TEM/EDX) were mainly related to residential wood combustion (K/S/C-rich, soot, other C-rich particles), traffic (soot, Si/Al-rich, Fe-rich), heavy fuel oil combustion in heat plants or ships (S with V-Ni-Fe), LRT pollutants (S/C-rich secondary particles) and sea salt (Na/Cl-rich). Tar balls from wood combustion were also observed, especially (∼5%) during the LRT pollution episode.

KW - AMS

KW - Black carbon

KW - Mobile laboratory

KW - Size distribution

KW - Traffic

KW - Wood burning

U2 - 10.1016/j.atmosenv.2017.03.028

DO - 10.1016/j.atmosenv.2017.03.028

M3 - Article

VL - 158

SP - 60

EP - 75

JO - Atmospheric Environment

JF - Atmospheric Environment

SN - 1352-2310

ER -