Articles | Volume 25, issue 17
https://doi.org/10.5194/acp-25-9937-2025
https://doi.org/10.5194/acp-25-9937-2025
Research article
 | 
05 Sep 2025
Research article |  | 05 Sep 2025

Measurement report: New particle formation events observed during the COALA-2020 campaign

Jhonathan Ramirez-Gamboa, Clare Paton-Walsh, Melita Keywood, Ruhi Humphries, Asher Mouat, Jennifer Kaiser, Malcom Possell, Jack Simmons, and Travis Naylor

Data sets

Volatile organic compound measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign A. P. Mouat et al. https://doi.org/10.1594/PANGAEA.927277

Aerosol size distribution measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign R. S. Humphries et al. https://doi.org/10.1594/PANGAEA.928853

Condensation nuclei >3 nm (CN3) measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign M. D. Keywood et al. https://doi.org/10.1594/PANGAEA.925555

Photosynthetically active radiation measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign T. A. Naylor et al. https://doi.org/10.1594/PANGAEA.928051

COALA-2020: Measurements of aerosol composition by ACSM at Cataract Scout Park, NSW, January-March 2020 R. S. Humphries et al. https://doi.org/10.1594/PANGAEA.973272

Cloud condensation nuclei (CCN) measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign R. S. Humphries et al. https://doi.org/10.1594/PANGAEA.928925

Greenhouse gases measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign D. W. T. Griffith et al. https://doi.org/10.1594/PANGAEA.927313

Air quality pollutants measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign G. Gunashanhar et al. https://doi.org/10.1594/PANGAEA.929001

Wind speed and direction measurements at Cataract Scout Park, Australia, taken during the COALA-2020 campaign A. D. Griffiths et al. https://doi.org/10.1594/PANGAEA.928929

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Short summary
Tiny air particles (aerosols) influence clouds, sunlight, and air chemistry. Our study examined how these particles form in a plant-rich region of Southeast Australia. We found frequent new particle formation (NPF) events, often linked to pollution plumes. Volatile organic compounds (VOCs) from plants and other factors influence NPF and aerosol growth. Nighttime NPF requires further study. Overall, plant emissions play a key role in aerosol formation in this region.
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