Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland
<p>Ice nucleating particles (INPs) play a crucial role in initiating ice crystal formation in clouds, influencing the dynamics and optical properties of clouds and their impacts on precipitation and the climate system. Despite their importance, there is limited knowledge about the vertical dis...
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Copernicus Publications
2024-10-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/24/11305/2024/acp-24-11305-2024.pdf |
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| author | Z. Brasseur J. Schneider J. Lampilahti V. Vakkari V. Vakkari V. A. Sinclair C. J. Williamson C. J. Williamson C. Xavier C. Xavier D. Moisseev D. Moisseev M. Hartmann P. Poutanen M. Lampimäki M. Kulmala T. Petäjä K. Lehtipalo K. Lehtipalo E. S. Thomson K. Höhler O. Möhler J. Duplissy |
| author_facet | Z. Brasseur J. Schneider J. Lampilahti V. Vakkari V. Vakkari V. A. Sinclair C. J. Williamson C. J. Williamson C. Xavier C. Xavier D. Moisseev D. Moisseev M. Hartmann P. Poutanen M. Lampimäki M. Kulmala T. Petäjä K. Lehtipalo K. Lehtipalo E. S. Thomson K. Höhler O. Möhler J. Duplissy |
| author_sort | Z. Brasseur |
| collection | DOAJ |
| description | <p>Ice nucleating particles (INPs) play a crucial role in initiating ice crystal formation in clouds, influencing the dynamics and optical properties of clouds and their impacts on precipitation and the climate system. Despite their importance, there is limited knowledge about the vertical distribution of INPs. This study focuses on aircraft measurements conducted during spring 2018 above the boreal forest of Hyytiälä, Finland. Similarities between INP concentrations, activated fractions, particle concentrations, and size distributions observed at ground level and in the boundary layer aloft indicate that surface particles and INPs are efficiently transported and mixed within the boundary layer. INP concentrations observed in the boundary layer are best predicted by a parameterization describing near-surface INP concentrations driven by the abundance of biogenic aerosol in the Finnish boreal forest, suggesting that biogenic INPs are dominant in the boundary layer above the same environment. Most of the INP concentrations and activated fractions observed in the free troposphere are notably lower than in the boundary layer, and the distinct particle size distributions suggest that different aerosol populations, likely resulting from long-range transport, are present in the free troposphere. However, we show one case where higher INP concentrations are observed in the free troposphere and where a homogeneous particle population exists from the surface to the free troposphere. This indicates that surface particles and INPs from the boreal forest can occasionally reach the free troposphere, which is particularly important as the INPs in the free troposphere can further travel horizontally and/or vertically and impact cloud formation.</p> |
| format | Article |
| id | doaj-art-2d24302b67714a9696ad57964e431ed6 |
| institution | Kabale University |
| issn | 1680-7316 1680-7324 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Copernicus Publications |
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| series | Atmospheric Chemistry and Physics |
| spelling | doaj-art-2d24302b67714a9696ad57964e431ed62025-02-12T08:23:23ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242024-10-0124113051133210.5194/acp-24-11305-2024Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, FinlandZ. Brasseur0J. Schneider1J. Lampilahti2V. Vakkari3V. Vakkari4V. A. Sinclair5C. J. Williamson6C. J. Williamson7C. Xavier8C. Xavier9D. Moisseev10D. Moisseev11M. Hartmann12P. Poutanen13M. Lampimäki14M. Kulmala15T. Petäjä16K. Lehtipalo17K. Lehtipalo18E. S. Thomson19K. Höhler20O. Möhler21J. Duplissy22Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandFinnish Meteorological Institute, Helsinki, FinlandAtmospheric Chemistry Research Group, Chemical Resource Beneficiation, North-West University, Potchefstroom, South AfricaInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandFinnish Meteorological Institute, Helsinki, FinlandDepartment of Physics, Lund University, Lund, SwedenSwedish Meteorological and Hydrological Institute (SMHI), Norrköping, SwedenInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandFinnish Meteorological Institute, Helsinki, FinlandLeibniz Institute for Tropospheric Research, Atmospheric Microphysics, Leipzig, GermanyInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandFinnish Meteorological Institute, Helsinki, FinlandDepartment of Chemistry and Molecular Biology, Atmospheric Science, University of Gothenburg, Gothenburg, SwedenInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland<p>Ice nucleating particles (INPs) play a crucial role in initiating ice crystal formation in clouds, influencing the dynamics and optical properties of clouds and their impacts on precipitation and the climate system. Despite their importance, there is limited knowledge about the vertical distribution of INPs. This study focuses on aircraft measurements conducted during spring 2018 above the boreal forest of Hyytiälä, Finland. Similarities between INP concentrations, activated fractions, particle concentrations, and size distributions observed at ground level and in the boundary layer aloft indicate that surface particles and INPs are efficiently transported and mixed within the boundary layer. INP concentrations observed in the boundary layer are best predicted by a parameterization describing near-surface INP concentrations driven by the abundance of biogenic aerosol in the Finnish boreal forest, suggesting that biogenic INPs are dominant in the boundary layer above the same environment. Most of the INP concentrations and activated fractions observed in the free troposphere are notably lower than in the boundary layer, and the distinct particle size distributions suggest that different aerosol populations, likely resulting from long-range transport, are present in the free troposphere. However, we show one case where higher INP concentrations are observed in the free troposphere and where a homogeneous particle population exists from the surface to the free troposphere. This indicates that surface particles and INPs from the boreal forest can occasionally reach the free troposphere, which is particularly important as the INPs in the free troposphere can further travel horizontally and/or vertically and impact cloud formation.</p>https://acp.copernicus.org/articles/24/11305/2024/acp-24-11305-2024.pdf |
| spellingShingle | Z. Brasseur J. Schneider J. Lampilahti V. Vakkari V. Vakkari V. A. Sinclair C. J. Williamson C. J. Williamson C. Xavier C. Xavier D. Moisseev D. Moisseev M. Hartmann P. Poutanen M. Lampimäki M. Kulmala T. Petäjä K. Lehtipalo K. Lehtipalo E. S. Thomson K. Höhler O. Möhler J. Duplissy Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland Atmospheric Chemistry and Physics |
| title | Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland |
| title_full | Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland |
| title_fullStr | Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland |
| title_full_unstemmed | Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland |
| title_short | Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland |
| title_sort | vertical distribution of ice nucleating particles over the boreal forest of hyytiala finland |
| url | https://acp.copernicus.org/articles/24/11305/2024/acp-24-11305-2024.pdf |
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