Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 21
Articles | Volume 26, issue 21
https://doi.org/10.5194/acp-26-16047-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-16047-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 21
Research article
 | 
12 Nov 2026
Research article |  | 12 Nov 2026

Frequent occurrence of newly formed aerosol particles over wide geographical areas in the Arctic free troposphere and atmospheric boundary layer

David J. Simon, Jonas Schaefer, Jörg Hartmann, Benjamin Kirbus, Joshua Müller, Markus Hartmann, Bruno Wetzel, Laura Köhler, Anna-Marie Jörss, Kay Weinhold, Andreas Herber, Zsófia Jurányi, Silvia Henning, Gregory C. Roberts, Manfred Wendisch, Mira L. Pöhlker, and Frank Stratmann

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Short summary
We investigate the occurrence of newly formed, nanometer-sized aerosol particles in the Arctic atmosphere by analyzing size-resolved particle measurements conducted aboard a research aircraft in April 2024. Vertically-resolved studies on such small particles have remained scarce. We frequently detected newly formed particles at altitudes of up to 4 km. These particles were associated with air mass transport from southern latitudes, the occurrence of clouds, as well as the presence of sea ice.
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