Articles | Volume 4, issue 2
https://doi.org/10.5194/ar-4-457-2026
https://doi.org/10.5194/ar-4-457-2026
Research article
 | 
06 Oct 2026
Research article |  | 06 Oct 2026

Drivers governing the seasonality of new particle formation in the Arctic

Dominic Heslin-Rees, Peter Tunved, Diego Aliaga, Janne Lampilahti, Ilona Riipinen, Annica M. L. Ekman, Ki-Tae Park, Martina Mazzini, Stefania Gilardoni, Roseline Thakur, Kihong Park, Young Jun Yoon, Kitack Lee, Mikko Sipilä, Mauro Mazzola, and Radovan Krejci

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Latest update: 06 Oct 2026
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Short summary
New particles form in the atmosphere and can influence the climate. We studied Arctic new particle formation (NPF) from 2022 to 2024 at the Zeppelin Observatory, on Svalbard. NPF occurs from April to November, peaking in late spring as sunlight increases. Some particles measured on-site grow large enough to seed clouds. Sunlight and existing aerosol particles strongly impact the likelihood of NPF, which mainly originates from marine regions, particularly the Greenland Sea.
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