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    Academic Journals

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• Input-adaptive linear mixed-effects model for estimating alveolar lung-deposited surface area (LDSA) using multipollutant datasets.

  Authors:Pak Lun Fung, Martha A. Zaidan, Jarkko V. Niemi, Erkka Saukko, Hilkka Timonen, Anu Kousa, et al.From:Atmospheric Chemistry and Physics (Vol. 22, Issue 3) Peer-Reviewed

  Feb. 8, 2022445 words Article Lung-deposited surface area (LDSA) has been considered to be a better metric to explain nanoparticle toxicity instead of the commonly used particulate mass concentration. LDSA concentrations can be obtained either by...

• Sources of black carbon at residential and traffic environments obtained by two source apportionment methods.

  Authors:Sanna Saarikoski, Jarkko V. Niemi, Minna Aurela, Liisa Pirjola, Anu Kousa, Topi Rönkkö, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 19) Peer-Reviewed

  Oct. 6, 2021371 words Brief article This study investigated the sources of black carbon (BC) at two contrasting urban environments in Helsinki, Finland: residential area and street canyon. The measurement campaign in the residential area was conducted in...

• Modelling of the urban concentrations of PM.sub.2.5 on a high resolution for a period of 35 years, for the assessment of lifetime exposure and health effects

  Authors:Jaakko Kukkonen, Leena Kangas, Mari Kauhaniemi, Mikhail Sofiev, Mia Aarnio, Jouni J. K. Jaakkola, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 11) Peer-Reviewed

  June 7, 2018350 words Author abstract, Bri...

  Reliable and self-consistent data on air quality are needed for an extensive period of time for conducting long-term, or even lifetime health impact assessments. We have modelled the urban-scale concentrations of...

• Quantitative analysis of environmental factors in differential weighing of blank teflon filters. (Technical Paper)

  Authors:Otto O. Hanninen, Kimmo J. Koistinen, Anu Kousa, Juha Keski-Karhu, and Matti J. JantunenFrom:Journal of the Air & Waste Management AssociationPeer-Reviewed

  Feb. 20023,726 words Article ABSTRACT Mass differences less than 100 [micro]g must be correctly measured in gravimetric analysis of particles collected on filters. Even small variations in mass measurement may contribute significant errors to...

• Evaluation of the impact of wood combustion on benzo[a]pyrene (BaP) concentrations; ambient measurements and dispersion modeling in Helsinki, Finland

  Authors:Leena Kangas, Anu Kousa, Mika Vestenius, Ari Karppinen, Jaakko Kukkonen, and Jarkko V. NiemiFrom:Atmospheric Chemistry and Physics (Vol. 17, Issue 5) Peer-Reviewed

  Mar. 10, 2017272 words Brief article Even though emission inventories indicate that wood combustion is a major source of polycyclic aromatic hydrocarbons (PAHs), estimating its impacts on PAH concentration in ambient air remains challenging. In this study...

• In-depth characterization of submicron particulate matter inter-annual variations at a street canyon site in northern Europe.

  Authors:Luis M. F. Barreira, Aku Helin, Minna Aurela, Kimmo Teinilä, Milla Friman, Leena Kangas, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 8) Peer-Reviewed

  Apr. 26, 2021410 words Report Atmospheric aerosols play an important role in air pollution. Aerosol particle chemical composition is highly variable depending on the season, hour of the day, day of the week, meteorology, and location of the...

• The impact of measures to reduce ambient air PM.sub.10 concentrations originating from road dust, evaluated for a street canyon in Helsinki

  Authors:Ana Stojiljkovic, Mari Kauhaniemi, Jaakko Kukkonen, Kaarle Kupiainen, Ari Karppinen, Bruce Rolstad Denby, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 17) Peer-Reviewed

  Sept. 4, 2019352 words Author abstract, Bri...

  We have numerically evaluated how effective selected potential measures would be for reducing the impact of road dust on ambient air particulate matter (PM.sub.10). The selected measures included a reduction of the...

• The influence of residential wood combustion on the concentrations of PM.sub.2.5 in four Nordic cities.

  Authors:Jaakko Kukkonen, Susana López-Aparicio, David Segersson, Camilla Geels, Leena Kangas, Mari Kauhaniemi, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 7) Peer-Reviewed

  Apr. 15, 2020389 words Article Residential wood combustion (RWC) is an important contributor to air quality in numerous regions worldwide. This study is the first extensive evaluation of the influence of RWC on ambient air quality in several Nordic...

• Spatiotemporal variation and trends in equivalent black carbon in the Helsinki metropolitan area in Finland.

  Authors:Krista Luoma, Jarkko V. Niemi, Minna Aurela, Pak Lun Fung, Aku Helin, Tareq Hussein, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 2) Peer-Reviewed

  Jan. 28, 2021420 words Article In this study, we present results from 12 years of black carbon (BC) measurements at 14 sites around the Helsinki metropolitan area (HMA) and at one background site outside the HMA. The main local sources of BC in the...

• Chemical and physical characterization of traffic particles in four different highway environments in the Helsinki metropolitan area

  Authors:Joonas Enroth, Sanna Saarikoski, Jarkko Niemi, Anu Kousa, Samara Carbone, Heino Kuuluvainen, et al.From:Atmospheric Chemistry and Physics (Vol. 16, Issue 9) Peer-Reviewed

  May 3, 2016317 words Brief article Traffic-related pollution is a major concern in urban areas due to its deleterious effects on human health. The characteristics of the traffic emissions on four highway environments in the Helsinki metropolitan area...