Articles | Volume 23, issue 6
https://doi.org/10.5194/acp-23-3779-2023
© Author(s) 2023. 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-23-3779-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Dynamics of aerosol, humidity, and clouds in air masses travelling over Fennoscandian boreal forests
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Larisa Sogacheva
Climate Research Programme, Finnish Meteorological Institute, Helsinki, Finland
Helmi-Marja Keskinen
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Independent researcher, Finland
Veli-Matti Kerminen
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Tuomo Nieminen
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Institute for Atmospheric and Earth System Research (INAR)/Forest
Sciences, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
Tuukka Petäjä
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Joint International Research Laboratory of Atmospheric and Earth
System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China
Ekaterina Ezhova
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Markku Kulmala
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Joint International Research Laboratory of Atmospheric and Earth
System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China
Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for
Soft Matter Science and Engineering, Beijing University of Chemical
Technology (BUCT), Beijing, China
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Cited
9 citations as recorded by crossref.
- Opinion: The strength of long-term comprehensive observations to meet multiple grand challenges in different environments and in the atmosphere M. Kulmala et al. https://doi.org/10.5194/acp-23-14949-2023
- How well are aerosol–cloud interactions represented in climate models? – Part 1: Understanding the sulfate aerosol production from the 2014–15 Holuhraun eruption G. Jordan et al. https://doi.org/10.5194/acp-24-1939-2024
- Long-term PM trends at boreal forest site in southern Finland from three different measurement techniques I. Ylivinkka et al. https://doi.org/10.5194/ar-3-503-2025
- Quantifying the accuracy of cos(SZA)-based upscaling from instantaneous to daily GPP: Implications for improving satellite-based SIF and GPP retrievals F. Xu et al. https://doi.org/10.1016/j.jaridenv.2025.105541
- Measurement report: New particle formation and aerosol properties at a newly founded atmospheric observatory at the Finnish Baltic Sea coast M. Peltola et al. https://doi.org/10.5194/acp-26-489-2026
- Beyond cloud cover: Low- and high-altitude clouds have distinct impacts on tree sap flow and transpiration S. Talvinen et al. https://doi.org/10.1016/j.agrformet.2026.111182
- Potential of carbon uptake and local aerosol production in boreal and hemi-boreal ecosystems across Finland and in Estonia P. Ke et al. https://doi.org/10.5194/bg-22-3235-2025
- Organic aerosol enhances boreal forest photosynthesis under cumulus clouds E. Ezhova et al. https://doi.org/10.1038/s43247-025-02539-z
- Air-mass trajectories and extreme episodes: Snowfalls on the natural region of the south-east coast of the Iberian Peninsula (1900–2005) E. Martínez-Ibarra et al. https://doi.org/10.1016/j.atmosres.2024.107899
9 citations as recorded by crossref.
- Opinion: The strength of long-term comprehensive observations to meet multiple grand challenges in different environments and in the atmosphere M. Kulmala et al. https://doi.org/10.5194/acp-23-14949-2023
- How well are aerosol–cloud interactions represented in climate models? – Part 1: Understanding the sulfate aerosol production from the 2014–15 Holuhraun eruption G. Jordan et al. https://doi.org/10.5194/acp-24-1939-2024
- Long-term PM trends at boreal forest site in southern Finland from three different measurement techniques I. Ylivinkka et al. https://doi.org/10.5194/ar-3-503-2025
- Quantifying the accuracy of cos(SZA)-based upscaling from instantaneous to daily GPP: Implications for improving satellite-based SIF and GPP retrievals F. Xu et al. https://doi.org/10.1016/j.jaridenv.2025.105541
- Measurement report: New particle formation and aerosol properties at a newly founded atmospheric observatory at the Finnish Baltic Sea coast M. Peltola et al. https://doi.org/10.5194/acp-26-489-2026
- Beyond cloud cover: Low- and high-altitude clouds have distinct impacts on tree sap flow and transpiration S. Talvinen et al. https://doi.org/10.1016/j.agrformet.2026.111182
- Potential of carbon uptake and local aerosol production in boreal and hemi-boreal ecosystems across Finland and in Estonia P. Ke et al. https://doi.org/10.5194/bg-22-3235-2025
- Organic aerosol enhances boreal forest photosynthesis under cumulus clouds E. Ezhova et al. https://doi.org/10.1038/s43247-025-02539-z
- Air-mass trajectories and extreme episodes: Snowfalls on the natural region of the south-east coast of the Iberian Peninsula (1900–2005) E. Martínez-Ibarra et al. https://doi.org/10.1016/j.atmosres.2024.107899
Saved (final revised paper)
Latest update: 13 Jun 2026
Short summary
We utilised back trajectories to identify the source region of air masses arriving in Hyytiälä, Finland, and their travel time over forests. Combined with atmospheric observations, they revealed how air mass transport over the Fennoscandian boreal forest during the growing season produced an accumulation of cloud condensation nuclei and humidity, promoting cloudiness and precipitation. By 55 h of transport, air masses appeared to reach a balanced state with the forest environment.
We utilised back trajectories to identify the source region of air masses arriving in...
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