Articles | Volume 26, issue 12
https://doi.org/10.5194/acp-26-9207-2026
https://doi.org/10.5194/acp-26-9207-2026
Research article
 | 
30 Jun 2026
Research article |  | 30 Jun 2026

El Niño meets elevated Tibetan Plateau snow cover: independent and synergistic effects on the winter PM2.5 dipole pattern in China

Xiaorui Zhang, Yuyang Han, Siyu Chen, Xiadong An, Chen Sheng, Wansuo Duan, Xi Chen, Qinglong You, Xingyue Hao, Ziqi Qiu, Zhihan Zhang, Zicheng Zhuang, and Meng Gao

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Cited articles

An, X., Wang, F., Sheng, L., and Li, C.: Pattern of wintertime southern rainfall and northern pollution over eastern China: The role of the strong eastern Pacific El Niño, J. Climate, 35, 7259–7273, 2022. 
An, X., Chen, W., Sheng, L., Li, C., and Ma, T.: Synergistic effect of El Niño and Arctic sea-ice increment on wintertime Northeast Asian anomalous anticyclone and its corresponding PM2.5 pollution, J. Geophys. Res.-Atmos., 128, e2022JD037840, 2023. 
Apte, J. S., Marshall, J. D., Cohen, A. J., and Brauer, M.: Addressing global mortality from ambient PM2.5, Environ. Sci. Technol., 49, 8057–8066, 2015. 
Bai, K. and Li, K.: LGHAP v2: Global daily 1-km gap-free PM2.5 grids (2020), Zenodo [data set], https://doi.org/10.5281/zenodo.8313613, 2023. 
Bai, K., Li, K., Shao, L., Li, X., Liu, C., Li, Z., Ma, M., Han, D., Sun, Y., Zheng, Z., Li, R., Chang, N.-B., and Guo, J.: LGHAP v2: a global gap-free aerosol optical depth and PM2.5 concentration dataset since 2000 derived via big Earth data analytics, Earth Syst. Sci. Data, 16, 2425–2448, https://doi.org/10.5194/essd-16-2425-2024, 2024. 
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This study examines how snow cover over the Tibetan Plateau and oceanic conditions influence air quality in China during winter. By analyzing weather data and pollution levels, we found that variations in snow cover affect weather patterns linked to fine particulate matter pollution. Our results emphasize the need to consider both snow and ocean influences in air quality predictions, aiming to improve forecasting models and support better public health and environmental management strategies.
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