Articles | Volume 3, issue 1
https://doi.org/10.5194/ar-3-15-2025
https://doi.org/10.5194/ar-3-15-2025
Research article
 | 
14 Jan 2025
Research article |  | 14 Jan 2025

New particle formation dynamics in the central Andes: contrasting urban and mountaintop environments

Diego Aliaga, Victoria A. Sinclair, Radovan Krejci, Marcos Andrade, Paulo Artaxo, Luis Blacutt, Runlong Cai, Samara Carbone, Yvette Gramlich, Liine Heikkinen, Dominic Heslin-Rees, Wei Huang, Veli-Matti Kerminen, Alkuin Maximilian Koenig, Markku Kulmala, Paolo Laj, Valeria Mardoñez-Balderrama, Claudia Mohr, Isabel Moreno, Pauli Paasonen, Wiebke Scholz, Karine Sellegri, Laura Ticona, Gaëlle Uzu, Fernando Velarde, Alfred Wiedensohler, Doug Worsnop, Cheng Wu, Chen Xuemeng, Qiaozhi Zha, and Federico Bianchi

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Cited articles

Adams, F., Dams, R., Guzman, L., and Winchester, J. W.: Background aerosol composition on chacaltaya mountain, Bolivia, Atmos. Environ., 11, 629–634, https://doi.org/10.1016/0004-6981(77)90116-0, 1977. 
Adams, F., Van Craen, M., Van Espen, P., and Andreuzzi, D.: The elemental composition of atmospheric aerosol particles at Chacaltaya, Bolivia, Atmos. Environ., 14, 879–893, 1980. 
Adams, F., Van Espen, P., and Maenhaut, W.: Aerosol composition at Chacaltaya, Bolivia, as determined by size-fractionated sampling, Atmos. Environ., 17, 1521–1536, 1983. 
Aliaga, D.: FLEXPART-WRF_v3.3.2 modified code, Zenodo [code], https://doi.org/10.5281/zenodo.5516295, 2021. 
Aliaga, D.: daliagachc/ranking-hy_zenodo: rel_v01, Zenodo [code], https://doi.org/10.5281/zenodo.10231522, 2023. 
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Short summary
This study examines new particle formation (NPF) in the Bolivian Andes at Chacaltaya mountain (CHC) and the urban El Alto–La Paz area (EAC). Days are clustered into four categories based on NPF intensity. Differences in particle size, precursor gases, and pollution levels are found. High NPF intensities increased Aitken mode particle concentrations at both sites, while volcanic influence selectively diminished NPF intensity at CHC but not EAC. This study highlights NPF dynamics in the Andes.
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