Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 20
Articles | Volume 25, issue 20
https://doi.org/10.5194/acp-25-13343-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-13343-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 20
Research article
 | 
22 Oct 2025
Research article |  | 22 Oct 2025

Nonlinear effects of the stratospheric Quasi-Biennial Oscillation on ENSO modulating PM2.5 over the North China Plain in early winter

Xiadong An, Wen Chen, Tianjiao Ma, and Lifang Sheng

Supplement

https://doi.org/10.5194/acp-25-13343-2025-supplement

Data sets

ERA5 monthly averaged data on pressure levels from 1940 to present Hans Hersbach et al. https://doi.org/10.24381/cds.6860a573

ERA5 monthly averaged data on single levels from 1940 to present Hans Hersbach et al. https://doi.org/10.24381/cds.f17050d7

Constructing a spatiotemporally coherent long-term PM2.5 concentration dataset over China during 1980–2019 using a machine learning approach Yang Yang https://doi.org/10.5281/zenodo.4293239

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

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Short summary
Air pollution in the North China Plain is tends to be influenced by El Niño-Southern Oscillation (ENSO) and stratospheric Quasi-Biennial Oscillation (QBO). During El Niño and easterly QBO, pollution rises, while La Niña and easterly QBO improve air quality through changes in atmospheric circulation and weather conditions.
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