Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols
<p>Cloud properties are strongly influenced by ice formation; hence, we need to understand the sources of ice-nucleating particles (INPs) around the globe. Boreal forests are known as sources of bioaerosol, and recent work indicates that these dominate the INP spectra above <span class=&quo...
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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/24/11737/2024/acp-24-11737-2024.pdf |
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| author | F. Vogel F. Vogel M. P. Adams L. Lacher P. B. Foster G. C. E. Porter G. C. E. Porter B. Bertozzi B. Bertozzi K. Höhler J. Schneider T. Schorr N. S. Umo J. Nadolny Z. Brasseur P. Heikkilä E. S. Thomson N. Büttner M. I. Daily R. Fösig A. D. Harrison J. Keskinen U. Proske U. Proske U. Proske J. Duplissy J. Duplissy M. Kulmala T. Petäjä O. Möhler B. J. Murray |
| author_facet | F. Vogel F. Vogel M. P. Adams L. Lacher P. B. Foster G. C. E. Porter G. C. E. Porter B. Bertozzi B. Bertozzi K. Höhler J. Schneider T. Schorr N. S. Umo J. Nadolny Z. Brasseur P. Heikkilä E. S. Thomson N. Büttner M. I. Daily R. Fösig A. D. Harrison J. Keskinen U. Proske U. Proske U. Proske J. Duplissy J. Duplissy M. Kulmala T. Petäjä O. Möhler B. J. Murray |
| author_sort | F. Vogel |
| collection | DOAJ |
| description | <p>Cloud properties are strongly influenced by ice formation; hence, we need to understand the sources of ice-nucleating particles (INPs) around the globe. Boreal forests are known as sources of bioaerosol, and recent work indicates that these dominate the INP spectra above <span class="inline-formula">−</span>24 <span class="inline-formula">°C</span>. To quantify the INP population at temperatures below <span class="inline-formula">−</span>24 <span class="inline-formula">°C</span>, we deployed a portable cloud expansion chamber (PINE) in a Finnish boreal forest from 13 March 2018 to 11 May 2018. Using the 6 <span class="inline-formula">min</span> time resolution PINE data, we present several lines of evidence that INPs below <span class="inline-formula">−</span>24 <span class="inline-formula">°C</span> in this location are also from biological sources: (i) an INP parameterization developed for a pine forest site in Colorado, where many INPs were shown to be biological, produced a good fit to our measurements; a moderate correlation of INPs with aerosol concentration larger than 0.5 <span class="inline-formula">µm</span> and the fluorescent bioaerosol concentration; (ii) a negative correlation with relative humidity that may relate to enhanced release of bioaerosol at low humidity from local sources such as the prolific lichen population in boreal forests; and (iii) the absence of correlation with ultra-fine particles (3.5 to 50 <span class="inline-formula">nm</span>), indicating that new particle formation events are not sources of INPs. This study should motivate further work to establish whether the commonality in bioaerosol ice-nucleating properties between spring in Finland and summer in Colorado is more generally applicable to different coniferous forest locations and times and also to determine to what extent these bioaerosols are transported to locations where they may affect clouds.</p> |
| format | Article |
| id | doaj-art-47f10e528101451d925dafb01810e047 |
| 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-47f10e528101451d925dafb01810e0472025-02-12T08:01:22ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242024-10-0124117371175710.5194/acp-24-11737-2024Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosolsF. Vogel0F. Vogel1M. P. Adams2L. Lacher3P. B. Foster4G. C. E. Porter5G. C. E. Porter6B. Bertozzi7B. Bertozzi8K. Höhler9J. Schneider10T. Schorr11N. S. Umo12J. Nadolny13Z. Brasseur14P. Heikkilä15E. S. Thomson16N. Büttner17M. I. Daily18R. Fösig19A. D. Harrison20J. Keskinen21U. Proske22U. Proske23U. Proske24J. Duplissy25J. Duplissy26M. Kulmala27T. Petäjä28O. Möhler29B. J. Murray30Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germanynow at: Institute of Atmospheric Sciences and Climate (ISAC), National Research Council (CNR), Bologna, ItalyInstitute of Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United KingdomInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United KingdomInstitute of Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United KingdomSchool of Physics and Astronomy, University of Leeds, Leeds, United KingdomInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germanynow at: Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, SwitzerlandInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute 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, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, Tampere, 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 Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United KingdomInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United KingdomAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, Tampere, FinlandInstitute of Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United KingdomInstitute for Atmospheric and Environmental Sciences, Goethe University Frankfurt, Frankfurt am Main, Germanynow at: Hydrology and Environmental Hydraulics Group, Wageningen University, Wageningen, the NetherlandsInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandHelsinki Institute of Physics, 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 of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United Kingdom<p>Cloud properties are strongly influenced by ice formation; hence, we need to understand the sources of ice-nucleating particles (INPs) around the globe. Boreal forests are known as sources of bioaerosol, and recent work indicates that these dominate the INP spectra above <span class="inline-formula">−</span>24 <span class="inline-formula">°C</span>. To quantify the INP population at temperatures below <span class="inline-formula">−</span>24 <span class="inline-formula">°C</span>, we deployed a portable cloud expansion chamber (PINE) in a Finnish boreal forest from 13 March 2018 to 11 May 2018. Using the 6 <span class="inline-formula">min</span> time resolution PINE data, we present several lines of evidence that INPs below <span class="inline-formula">−</span>24 <span class="inline-formula">°C</span> in this location are also from biological sources: (i) an INP parameterization developed for a pine forest site in Colorado, where many INPs were shown to be biological, produced a good fit to our measurements; a moderate correlation of INPs with aerosol concentration larger than 0.5 <span class="inline-formula">µm</span> and the fluorescent bioaerosol concentration; (ii) a negative correlation with relative humidity that may relate to enhanced release of bioaerosol at low humidity from local sources such as the prolific lichen population in boreal forests; and (iii) the absence of correlation with ultra-fine particles (3.5 to 50 <span class="inline-formula">nm</span>), indicating that new particle formation events are not sources of INPs. This study should motivate further work to establish whether the commonality in bioaerosol ice-nucleating properties between spring in Finland and summer in Colorado is more generally applicable to different coniferous forest locations and times and also to determine to what extent these bioaerosols are transported to locations where they may affect clouds.</p>https://acp.copernicus.org/articles/24/11737/2024/acp-24-11737-2024.pdf |
| spellingShingle | F. Vogel F. Vogel M. P. Adams L. Lacher P. B. Foster G. C. E. Porter G. C. E. Porter B. Bertozzi B. Bertozzi K. Höhler J. Schneider T. Schorr N. S. Umo J. Nadolny Z. Brasseur P. Heikkilä E. S. Thomson N. Büttner M. I. Daily R. Fösig A. D. Harrison J. Keskinen U. Proske U. Proske U. Proske J. Duplissy J. Duplissy M. Kulmala T. Petäjä O. Möhler B. J. Murray Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols Atmospheric Chemistry and Physics |
| title | Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols |
| title_full | Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols |
| title_fullStr | Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols |
| title_full_unstemmed | Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols |
| title_short | Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols |
| title_sort | ice nucleating particles active below 24 thinsp °c in a finnish boreal forest and their relationship to bioaerosols |
| url | https://acp.copernicus.org/articles/24/11737/2024/acp-24-11737-2024.pdf |
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