The role of chemical boundary conditions in simulating summer ozone and cross-boundary transport over China

Du, Yunsong; Yang, Fumo; Lou, Sijia; Lyu, Baolei; Huang, Ran; Shi, Guangming; Hu, Yongtao; Jiang, Yan; Wang, Nan

doi:10.5194/acp-26-6223-2026

Articles | Volume 26, issue 9

https://doi.org/10.5194/acp-26-6223-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-6223-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 9

Research article

|

11 May 2026

Research article |

| 11 May 2026

The role of chemical boundary conditions in simulating summer ozone and cross-boundary transport over China

Yunsong Du, Fumo Yang, Sijia Lou, Baolei Lyu, Ran Huang, Guangming Shi, Yongtao Hu, Yan Jiang, and Nan Wang

Supplement

https://doi.org/10.5194/acp-26-6223-2026-supplement

Data sets

ERA5 hourly data on single levels from 1940 to present Hans Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Model code and software

CBC-Prep-CMAQ: Preprocessing Scripts and Key Outputs for Chemical Boundary Condition Sensitivity Simulations of Summer Ozone over China Yunsong Du https://doi.org/10.5281/zenodo.19447294

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Short summary

This study shows that using dynamically changing chemical boundary conditions is essential for accurately simulating summer ozone pollution in China. By integrating real-time global data, we improve model performance and reveal how large-scale weather patterns drive cross-border and stratospheric transport. These results support more reliable ozone forecasting and pollution mitigation.