Articles | Volume 25, issue 22
https://doi.org/10.5194/acp-25-16775-2025
https://doi.org/10.5194/acp-25-16775-2025
Research article
 | 
25 Nov 2025
Research article |  | 25 Nov 2025

Is the summer aerosol over the Arctic controlled by regional atmospheric circulation or ice conditions? Trends and future implications

Caroline Leck, Jost Heintzenberg, Tiina Nygård, and Tuomas Naakka

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Short summary
Five summer cruises of the Swedish icebreaker Oden in the inner Arctic in 1990, 1996, 2001, 2008, and 2018 provided a unique dataset on the seasonal distribution of atmospheric aerosol. Coupling these data with the seasonal sea ice distribution strongly indicated a regional biogenic aerosol source during late summer and early autumn freeze-up conditions. Given the expected further warming of the Arctic, we hypothesize an increase in biogenic aerosol in late summer and autumn.
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