Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 15
Articles | Volume 26, issue 15
https://doi.org/10.5194/acp-26-11135-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-11135-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 15
Research article
 | 
10 Aug 2026
Research article |  | 10 Aug 2026

First Continuous Aerosol Measurements at Testa Grigia at 3480 m a.s.l.: Aerosol Populations and Dust Transport Dynamics in the Southern European Alps

Stefania Gilardoni, Annachiara Bellini, Paolo Bonasoni, Henri Diémoz, Christian Gencarelli, Angela Marinoni, Eros Mariani, Luigi Mazari Villanova, Bruno Neininger, Mattia Perilli, Michael Sprenger, and Francesco Petracchini

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Short summary
This study presents the first high-time-resolution aerosol data collected from the Testa Grigia Observatory (3,480 m) in the Italian Alps, from 2021 to 2023. We identified three transport pathways: Saharan Dust Events (SDE), which occurred with a frequency of 6 %, regional and long-range transported pollution (28 %), and clean air from the free troposphere. The timing of SDE, observed mainly in spring, and the mixing of dust particles with black carbon, enhance SDE impact on snow melting.
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