Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 10
Articles | Volume 26, issue 10
https://doi.org/10.5194/acp-26-7287-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-7287-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 10
Research article
 | 
27 May 2026
Research article |  | 27 May 2026

Microphysical properties and light absorption enhancement of refractory black carbon aerosols in the central Arctic marine boundary layer: role of warm airmass intrusions on mixing state

Babu Suja Arun, Thomas Müller, Mira L. Pöhlker, Andreas Held, Christopher Pöhlker, Manuela van Pinxteren, Yifan Yang, Sabine Lüchtrath, Andreas Walbröl, Janna E. Rückert, Philipp Oehlke, Maik Merkel, and Birgit Wehner

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Short summary
Black carbon (BC) aerosols absorb solar radiation and perturb the Arctic energy budget, yet in-situ studies of their microphysical properties and mixing state in the Arctic remain scarce. Based on observations from a shipborne expedition in the Arctic Ocean, we found substantial BC concentrations and showed that warm airmass intrusions enhanced BC levels. Aged BC exhibited enhanced light absorption. These findings will help improve the representation of BC in climate models.
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