Articles | Volume 20, issue 5
https://doi.org/10.5194/acp-20-3151-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-3151-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Mar 2020
Research article |
| 16 Mar 2020
| 16 Mar 2020
Long-term sub-micrometer aerosol chemical composition in the boreal forest: inter- and intra-annual variability
Liine Heikkinen
CORRESPONDING AUTHOR
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Mikko Äijälä
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Matthieu Riva
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON,
Villeurbanne, 69626, France
Krista Luoma
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Kaspar Dällenbach
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Juho Aalto
Institute for Atmospheric and Earth System Research/Forest Sciences,
Faculty of Agriculture and Forestry, University of Helsinki, Helsinki,
00014, Finland
Pasi Aalto
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Diego Aliaga
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Minna Aurela
Atmospheric Composition Research, Finnish Meteorological Institute,
Helsinki, 00101, Finland
Helmi Keskinen
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Ulla Makkonen
Atmospheric Composition Research, Finnish Meteorological Institute,
Helsinki, 00101, Finland
Pekka Rantala
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Markku Kulmala
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Tuukka Petäjä
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Douglas Worsnop
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
Aerodyne Research Inc., Billerica, MA, USA
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, Helsinki, 00014, Finland
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- PM2.5 composition and sources in the San Joaquin Valley of California: A long-term study using ToF-ACSM with the capture vaporizer P. Sun et al. 10.1016/j.envpol.2021.118254
- Tropical and Boreal Forest – Atmosphere Interactions: A Review P. Artaxo et al. 10.16993/tellusb.34
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- Description and evaluation of aerosol in UKESM1 and HadGEM3-GC3.1 CMIP6 historical simulations J. Mulcahy et al. 10.5194/gmd-13-6383-2020
- Measurement report: Molecular composition and volatility of gaseous organic compounds in a boreal forest – from volatile organic compounds to highly oxygenated organic molecules W. Huang et al. 10.5194/acp-21-8961-2021
- Characteristics and sources of water-soluble organic aerosol in a heavily polluted environment in Northern China H. Li et al. 10.1016/j.scitotenv.2020.143970
- Influence of meteorological conditions and seasonality on PM1 and organic aerosol sources at a rural background site R. Lhotka et al. 10.1016/j.atmosenv.2025.121028
- A searchable database and mass spectral comparison tool for the Aerosol Mass Spectrometer (AMS) and the Aerosol Chemical Speciation Monitor (ACSM) S. Jeon et al. 10.5194/amt-16-6075-2023
- Chemical characterization and source identification of submicron aerosols from a year-long real-time observation at a rural site of Shanghai using an Aerosol Chemical Speciation Monitor Q. Zhao et al. 10.1016/j.atmosres.2020.105154
- Dynamics of aerosol, humidity, and clouds in air masses travelling over Fennoscandian boreal forests M. Räty et al. 10.5194/acp-23-3779-2023
- Carbon farming: a circular framework to augment CO2 sinks and to combat climate change S. Singh et al. 10.1039/D3VA00296A
- Organic aerosol source apportionment by using rolling positive matrix factorization: Application to a Mediterranean coastal city B. Chazeau et al. 10.1016/j.aeaoa.2022.100176
- Detecting and Characterizing Particulate Organic Nitrates with an Aerodyne Long-ToF Aerosol Mass Spectrometer F. Graeffe et al. 10.1021/acsearthspacechem.2c00314
- Measurement report: Evaluation of the TOF-ACSM-CV for PM1.0 and PM2.5 measurements during the RITA-2021 field campaign X. Liu et al. 10.5194/acp-24-3405-2024
- Near real-time PM1 chemical composition measurements at a French urban background and coastal site under industrial influence over more than a year: Temporal variability and assessment of sulfur-containing emissions S. Zhang et al. 10.1016/j.atmosenv.2020.117960
- Source apportionment resolved by time of day for improved deconvolution of primary source contributions to air pollution S. Bhandari et al. 10.5194/amt-15-6051-2022
- In-depth characterization of submicron particulate matter inter-annual variations at a street canyon site in northern Europe L. Barreira et al. 10.5194/acp-21-6297-2021
- Eight years of sub-micrometre organic aerosol composition data from the boreal forest characterized using a machine-learning approach L. Heikkinen et al. 10.5194/acp-21-10081-2021
- Process-evaluation of forest aerosol-cloud-climate feedback shows clear evidence from observations and large uncertainty in models S. Blichner et al. 10.1038/s41467-024-45001-y
- An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloom R. Thakur et al. 10.5194/acp-22-6365-2022
- Evolution of Organic Aerosols in the South Asian Outflow to the Northern Indian Ocean T. Ajith et al. 10.1021/acsearthspacechem.3c00059
- Cloud response to co-condensation of water and organic vapors over the boreal forest L. Heikkinen et al. 10.5194/acp-24-5117-2024
- CCN estimations at a high-altitude remote site: role of organic aerosol variability and hygroscopicity F. Rejano et al. 10.5194/acp-24-13865-2024
- Simulating Atmospheric Organic Aerosol in the Boreal Forest Using Its Volatility-Oxygen Content Distribution E. Karnezi et al. 10.3390/atmos14050763
- Observations on aerosol optical properties and scavenging during cloud events A. Ruuskanen et al. 10.5194/acp-21-1683-2021
- Enhanced Aerosol Source Identification by Utilizing High Molecular Weight Signals in Aerosol Mass Spectra Y. Zhang et al. 10.1021/acsestair.3c00102
- Significance of the organic aerosol driven climate feedback in the boreal area T. Yli-Juuti et al. 10.1038/s41467-021-25850-7
- Trajectory-based analysis on the source areas and transportation pathways of atmospheric particulate matter over Eastern Finland O. Väisänen et al. 10.1080/16000889.2020.1799687
- The effect of clouds and precipitation on the aerosol concentrations and composition in a boreal forest environment S. Isokääntä et al. 10.5194/acp-22-11823-2022
- Assessing volatile organic compound sources in a boreal forest using positive matrix factorization (PMF) M. Vestenius et al. 10.1016/j.atmosenv.2021.118503
Latest update: 08 May 2025
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.
Atmospheric aerosols are solid or liquid particles suspended in the air. They are known as a...
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