Articles | Volume 20, issue 5
https://doi.org/10.5194/acp-20-3151-2020
https://doi.org/10.5194/acp-20-3151-2020
Research article
 | 
16 Mar 2020
Research article |  | 16 Mar 2020

Long-term sub-micrometer aerosol chemical composition in the boreal forest: inter- and intra-annual variability

Liine Heikkinen, Mikko Äijälä, Matthieu Riva, Krista Luoma, Kaspar Dällenbach, Juho Aalto, Pasi Aalto, Diego Aliaga, Minna Aurela, Helmi Keskinen, Ulla Makkonen, Pekka Rantala, Markku Kulmala, Tuukka Petäjä, Douglas Worsnop, and Mikael Ehn

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Latest update: 24 Jul 2024
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Short summary
Atmospheric aerosols are solid or liquid particles suspended in the air. They are known as a health risk, but they also influence the Earth's climate. The composition of aerosols becomes important when predicting their effect on climate. We show both seasonal and year-to-year variability of aerosol chemical composition in the boreal forest of Finland. We observed a consistent bimodal seasonal trend: a biogenic summertime maximum and an anthropogenic wintertime maximum in the mass concentration.
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