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A central arctic extreme aerosol event triggered by a warm air-mass intrusion

Author

Listed:
  • Lubna Dada

    (Ecole Polytechnique Fédérale de Lausanne (EPFL) Valais Wallis
    Paul Scherrer Institute)

  • Hélène Angot

    (Ecole Polytechnique Fédérale de Lausanne (EPFL) Valais Wallis)

  • Ivo Beck

    (Ecole Polytechnique Fédérale de Lausanne (EPFL) Valais Wallis)

  • Andrea Baccarini

    (Ecole Polytechnique Fédérale de Lausanne (EPFL) Valais Wallis)

  • Lauriane L. J. Quéléver

    (University of Helsinki)

  • Matthew Boyer

    (University of Helsinki)

  • Tiia Laurila

    (University of Helsinki)

  • Zoé Brasseur

    (University of Helsinki)

  • Gina Jozef

    (University of Colorado
    University of Colorado
    University of Colorado Boulder)

  • Gijs Boer

    (University of Colorado
    National Oceanic and Atmospheric Administration
    University of Colorado)

  • Matthew D. Shupe

    (University of Colorado
    National Oceanic and Atmospheric Administration)

  • Silvia Henning

    (Leibniz Institute for Tropospheric Research)

  • Silvia Bucci

    (University of Vienna)

  • Marina Dütsch

    (University of Vienna)

  • Andreas Stohl

    (University of Vienna)

  • Tuukka Petäjä

    (University of Helsinki)

  • Kaspar R. Daellenbach

    (Laboratory of Atmospheric Chemistry, Paul Scherrer Institute)

  • Tuija Jokinen

    (University of Helsinki
    Climate & Atmosphere Research Centre (CARE-C), the Cyprus Institute)

  • Julia Schmale

    (Ecole Polytechnique Fédérale de Lausanne (EPFL) Valais Wallis)

Abstract

Frequency and intensity of warm and moist air-mass intrusions into the Arctic have increased over the past decades and have been related to sea ice melt. During our year-long expedition in the remote central Arctic Ocean, a record-breaking increase in temperature, moisture and downwelling-longwave radiation was observed in mid-April 2020, during an air-mass intrusion carrying air pollutants from northern Eurasia. The two-day intrusion, caused drastic changes in the aerosol size distribution, chemical composition and particle hygroscopicity. Here we show how the intrusion transformed the Arctic from a remote low-particle environment to an area comparable to a central-European urban setting. Additionally, the intrusion resulted in an explosive increase in cloud condensation nuclei, which can have direct effects on Arctic clouds’ radiation, their precipitation patterns, and their lifetime. Thus, unless prompt actions to significantly reduce emissions in the source regions are taken, such intrusion events are expected to continue to affect the Arctic climate.

Suggested Citation

  • Lubna Dada & Hélène Angot & Ivo Beck & Andrea Baccarini & Lauriane L. J. Quéléver & Matthew Boyer & Tiia Laurila & Zoé Brasseur & Gina Jozef & Gijs Boer & Matthew D. Shupe & Silvia Henning & Silvia Bu, 2022. "A central arctic extreme aerosol event triggered by a warm air-mass intrusion," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32872-2
    DOI: 10.1038/s41467-022-32872-2
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    References listed on IDEAS

    as
    1. Andrea Baccarini & Linn Karlsson & Josef Dommen & Patrick Duplessis & Jutta Vüllers & Ian M. Brooks & Alfonso Saiz-Lopez & Matthew Salter & Michael Tjernström & Urs Baltensperger & Paul Zieger & Julia, 2020. "Publisher Correction: Frequent new particle formation over the high Arctic pack ice by enhanced iodine emissions," Nature Communications, Nature, vol. 11(1), pages 1-1, December.
    2. Andrea Baccarini & Linn Karlsson & Josef Dommen & Patrick Duplessis & Jutta Vüllers & Ian M. Brooks & Alfonso Saiz-Lopez & Matthew Salter & Michael Tjernström & Urs Baltensperger & Paul Zieger & Julia, 2020. "Frequent new particle formation over the high Arctic pack ice by enhanced iodine emissions," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
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