Articles | Volume 25, issue 7
https://doi.org/10.5194/acp-25-4107-2025
https://doi.org/10.5194/acp-25-4107-2025
Research article
 | 
10 Apr 2025
Research article |  | 10 Apr 2025

Marine organic aerosol at Mace Head: effects from phytoplankton and source region variability

Emmanuel Chevassus, Kirsten N. Fossum, Darius Ceburnis, Lu Lei, Chunshui Lin, Wei Xu, Colin O'Dowd, and Jurgita Ovadnevaite

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Cited articles

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This study presents the first source apportionment of organic aerosol at Mace Head via high-resolution mass spectrometry. Introducing transfer entropy as a novel method reveals that aged organic aerosol originates from both open-ocean ozonolysis and local peat-burning oxidation. Methanesulfonic acid and organic sea spray both mirror phytoplankton activity, with the former closely tied to coccolithophore blooms and the latter linked to diatoms, chlorophytes, and cyanobacteria.
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