Articles | Volume 22, issue 10
https://doi.org/10.5194/acp-22-6507-2022
https://doi.org/10.5194/acp-22-6507-2022
Research article
 | 
19 May 2022
Research article |  | 19 May 2022

Intraseasonal variation of the northeast Asian anomalous anticyclone and its impacts on PM2.5 pollution in the North China Plain in early winter

Xiadong An, Wen Chen, Peng Hu, Shangfeng Chen, and Lifang Sheng

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Cited articles

An, X., Sheng, L., Liu, Q., Li, C., Gao, Y., and Li, J.: The combined effect of two westerly jet waveguides on heavy haze in the North China Plain in November and December 2015, Atmos. Chem. Phys., 20, 4667–4680, https://doi.org/10.5194/acp-20-4667-2020, 2020. 
An, X., Sheng, L., Li, C., Chen, W., Tang, Y., and Huangfu, J.: Effect of rainfall-induced diabatic heating over southern China on the formation of wintertime haze on the North China Plain, Atmos. Chem. Phys., 22, 725–738, https://doi.org/10.5194/acp-22-725-2022, 2022. 
Atlas, E. and Giam, C. S.: Ambient Concentration and Precipitation Scavenging of Atmospheric 461 Organic Pollutants, Water Air Soil Poll., 38, 19–36, 1988. 
Baldwin, M. P., Stephenson, D. B., and Jolliffe, I. T.: Spatial weighting and iterative projection methods for EOFs, J. Climate, 22, 234–243, https://doi.org/10.1175/2008JCLI2147.1, 2009. 
Cai, W., Li, K., Liao, H., Wang, H. J., and Wu, L. X.: Weather conditions conducive to Beijing severe haze more frequent under climate change, Nat. Clim. Change, 7, 257–262, https://doi.org/10.1038/nclimate3249, 2017. 
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Short summary
The intraseasonal NAAA usually establishes quickly on day −3 with a life span of 8 days. Further results revealed that the probability of regional PM2.5 pollution related to the NAAA for at least 2 days in the NCP is 80% in NDJ period 2000–2021. Particularly, air quality in the NCP tends to deteriorate on day 2 prior to the peak day of the NAAA and reaches a peak on day −1 with a life cycle of 4 days. The corresponding meteorological conditions support these conclusions.
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