Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 4
Articles | Volume 26, issue 4
https://doi.org/10.5194/acp-26-2831-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-2831-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 4
Research article
 | 
26 Feb 2026
Research article |  | 26 Feb 2026

Multi-site non-methane hydrocarbon source apportionment and ozone insights in Southern Taiwan using positive matrix factorization

Duy-Hieu Nguyen, Hsin-Cheng Hsieh, Mao-Chang Liang, Neng-Huei Lin, Chieh-Heng Wang, and Jia-Lin Wang

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Short summary
Using year-round, high-frequency non-methane hydrocarbons measurements from three monitoring sites, each with distinct source–receptor characteristics, this study applied the source apportionment model to resolve eight sources and assess ozone-forming potential. Distinct acetylene plumes at Linyuan (R² > 0.99) provided an internal consistency check. Results reveal spatial–seasonal source variability and highlight the roles of petroleum, mixed, and aged air sources in ozone formation management.
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