Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 17
Articles | Volume 25, issue 17
https://doi.org/10.5194/acp-25-10027-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-10027-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 17
Research article
 | 
09 Sep 2025
Research article |  | 09 Sep 2025

Differential characterization of air ions in boreal forest of Finland and a megacity of eastern China

Tinghan Zhang, Ximeng Qi, Janne Lampilahti, Liangduo Chen, Xuguang Chi, Wei Nie, Xin Huang, Zehao Zou, Wei Du, Tom Kokkonen, Tuukka Petäjä, Katrianne Lehtipalo, Veli-Matti Kerminen, Aijun Ding, and Markku Kulmala

Viewed

Total article views: 6,218 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
4,947 957 314 6,218 461 391 358
  • HTML: 4,947
  • PDF: 957
  • XML: 314
  • Total: 6,218
  • Supplement: 461
  • BibTeX: 391
  • EndNote: 358
Views and downloads (calculated since 14 Feb 2025)
Cumulative views and downloads (calculated since 14 Feb 2025)

Viewed (geographical distribution)

Total article views: 6,218 (including HTML, PDF, and XML) Thereof 6,144 with geography defined and 74 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved (final revised paper)

Latest update: 22 Sep 2026
Download
Short summary
By comparing air ions at two flagship sites – a boreal forest site in Finland and a megacity site in eastern China – we characterized ion concentrations and their roles in new particle formation (NPF) across contrasting environments. The ion-induced fraction was much higher in the clean boreal forest. However, earlier activation of charged particles and high ion-induced fraction during quiet NPF in the megacity site imply a non-negligible role for ion-induced NPF in polluted urban areas.
Read more
Share
Altmetrics
Final-revised paper
Preprint