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Significance of the organic aerosol driven climate feedback in the boreal area

Author

Listed:
  • Taina Yli-Juuti

    (University of Eastern Finland)

  • Tero Mielonen

    (Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute)

  • Liine Heikkinen

    (Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki)

  • Antti Arola

    (Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute)

  • Mikael Ehn

    (Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki)

  • Sini Isokääntä

    (University of Eastern Finland)

  • Helmi-Marja Keskinen

    (Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki
    Aerosol Physics Laboratory, Physics Unit, Tampere University)

  • Markku Kulmala

    (Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki)

  • Anton Laakso

    (Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute)

  • Antti Lipponen

    (Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute)

  • Krista Luoma

    (Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki)

  • Santtu Mikkonen

    (University of Eastern Finland
    University of Eastern Finland)

  • Tuomo Nieminen

    (University of Eastern Finland
    Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki
    Institute for Atmospheric and Earth System Research/Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki)

  • Pauli Paasonen

    (Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki)

  • Tuukka Petäjä

    (Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki)

  • Sami Romakkaniemi

    (Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute)

  • Juha Tonttila

    (Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute)

  • Harri Kokkola

    (Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute)

  • Annele Virtanen

    (University of Eastern Finland)

Abstract

Aerosol particles cool the climate by scattering solar radiation and by acting as cloud condensation nuclei. Higher temperatures resulting from increased greenhouse gas levels have been suggested to lead to increased biogenic secondary organic aerosol and cloud condensation nuclei concentrations creating a negative climate feedback mechanism. Here, we present direct observations on this feedback mechanism utilizing collocated long term aerosol chemical composition measurements and remote sensing observations on aerosol and cloud properties. Summer time organic aerosol loadings showed a clear increase with temperature, with simultaneous increase in cloud condensation nuclei concentration in a boreal forest environment. Remote sensing observations revealed a change in cloud properties with an increase in cloud reflectivity in concert with increasing organic aerosol loadings in the area. The results provide direct observational evidence on the significance of this negative climate feedback mechanism.

Suggested Citation

  • Taina Yli-Juuti & Tero Mielonen & Liine Heikkinen & Antti Arola & Mikael Ehn & Sini Isokääntä & Helmi-Marja Keskinen & Markku Kulmala & Anton Laakso & Antti Lipponen & Krista Luoma & Santtu Mikkonen &, 2021. "Significance of the organic aerosol driven climate feedback in the boreal area," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25850-7
    DOI: 10.1038/s41467-021-25850-7
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    Cited by:

    1. Ménard, Isabelle & Thiffault, Evelyne & Boulanger, Yan & Boucher, Jean-François, 2022. "Multi-model approach to integrate climate change impact on carbon sequestration potential of afforestation scenarios in Quebec, Canada," Ecological Modelling, Elsevier, vol. 473(C).

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