Articles | Volume 25, issue 19
https://doi.org/10.5194/acp-25-11575-2025
https://doi.org/10.5194/acp-25-11575-2025
Research article
 | 
30 Sep 2025
Research article |  | 30 Sep 2025

Surface and tropospheric ozone over East Asia and Southeast Asia from observations: distributions, trends, and variability

Ke Li, Rong Tan, Wenhao Qiao, Taegyung Lee, Yufen Wang, Danyuting Zhang, Minglong Tang, Wenqing Zhao, Yixuan Gu, Shaojia Fan, Jinqiang Zhang, Xiaopu Lyu, Likun Xue, Jianming Xu, Zhiqiang Ma, Mohd Talib Latif, Teerachai Amnuaylojaroen, Junsu Gil, Mee-Hye Lee, Juseon Bak, Joowan Kim, Hong Liao, Yugo Kanaya, Xiao Lu, Tatsuya Nagashima, and Ja-Ho Koo

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Cited articles

Ahamad, F., Griffiths, P. T., Latif, M. T., Juneng, L., and Xiang, C. J.: Ozone Trends from Two Decades of Ground Level Observation in Malaysia, Atmosphere, 11, https://doi.org/10.3390/atmos11070755, 2020. 
Ashfold, M. J., Latif, M. T., Mokhtar, A. M., Samah, A. A., Mead, M. I., and Harris, N.: The Relationship between Ozone and Temperature in Greater Kuala Lumpur, Malaysia, Aerosol Air Qual. Res., 24, 240072, https://doi.org/10.4209/aaqr.240072, 2024. 
Bak, J., Song, E.-J., Lee, H.-J., Liu, X., Koo, J.-H., Kim, J., Jeon, W., Kim, J.-H., and Kim, C.-H.: Temporal variability of tropospheric ozone and ozone profiles in the Korean Peninsula during the East Asian summer monsoon: insights from multiple measurements and reanalysis datasets, Atmos. Chem. Phys., 22, 14177–14187, https://doi.org/10.5194/acp-22-14177-2022, 2022. 
Cao, T. H., Wang, H. C., Li, L., Lu, X., Liu, Y. M., and Fan, S. J.: Fast spreading of surface ozone in both temporal and spatial scale in Pearl River Delta, J. Environ. Sci., 137, 540–552, https://doi.org/10.1016/j.jes.2023.02.025, 2024. 
Chang, K.-L., McDonald, B. C., Harkins, C., and Cooper, O. R.: Surface ozone trend variability across the United States and the impact of heat waves (1990–2023), Atmos. Chem. Phys., 25, 5101–5132, https://doi.org/10.5194/acp-25-5101-2025, 2025. 
Short summary
East Asia and Southeast Asia have been identified as a global hot spot, with the fastest ozone increase. This paper presents the most comprehensive observational review of ozone distributions and evolution over East Asia and Southeast Asia across different spatiotemporal scales in the past two decades, which will have important implications for assessing ozone impacts on public health and crop yields and for developing future ozone control strategies.
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