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Dust-wind interactions can intensify aerosol pollution over eastern China

Author

Listed:
  • Yang Yang

    (Scripps Institution of Oceanography, University of California, San Diego
    Pacific Northwest National Laboratory)

  • Lynn M. Russell

    (Scripps Institution of Oceanography, University of California, San Diego)

  • Sijia Lou

    (Scripps Institution of Oceanography, University of California, San Diego
    Pacific Northwest National Laboratory)

  • Hong Liao

    (School of Environmental Science and Engineering/Joint International Research Laboratory of Climate and Environment Change, Nanjing University of Information Science & Technology)

  • Jianping Guo

    (State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences)

  • Ying Liu

    (Pacific Northwest National Laboratory)

  • Balwinder Singh

    (Pacific Northwest National Laboratory)

  • Steven J. Ghan

    (Pacific Northwest National Laboratory)

Abstract

Eastern China has experienced severe and persistent winter haze episodes in recent years due to intensification of aerosol pollution. In addition to anthropogenic emissions, the winter aerosol pollution over eastern China is associated with unusual meteorological conditions, including weaker wind speeds. Here we show, based on model simulations, that during years with decreased wind speed, large decreases in dust emissions (29%) moderate the wintertime land–sea surface air temperature difference and further decrease winds by −0.06 (±0.05) m s−1 averaged over eastern China. The dust-induced lower winds enhance stagnation of air and account for about 13% of increasing aerosol concentrations over eastern China. Although recent increases in anthropogenic emissions are the main factor causing haze over eastern China, we conclude that natural emissions also exert a significant influence on the increases in wintertime aerosol concentrations, with important implications that need to be taken into account by air quality studies.

Suggested Citation

  • Yang Yang & Lynn M. Russell & Sijia Lou & Hong Liao & Jianping Guo & Ying Liu & Balwinder Singh & Steven J. Ghan, 2017. "Dust-wind interactions can intensify aerosol pollution over eastern China," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15333
    DOI: 10.1038/ncomms15333
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    Cited by:

    1. Linyi Wei & Zheng Lu & Yong Wang & Xiaohong Liu & Weiyi Wang & Chenglai Wu & Xi Zhao & Stefan Rahimi & Wenwen Xia & Yiquan Jiang, 2022. "Black carbon-climate interactions regulate dust burdens over India revealed during COVID-19," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Li Yang & Chunyan Qin & Ke Li & Chuxiong Deng & Yaojun Liu, 2023. "Quantifying the Spatiotemporal Heterogeneity of PM 2.5 Pollution and Its Determinants in 273 Cities in China," IJERPH, MDPI, vol. 20(2), pages 1-17, January.
    3. Yang Yang & Lili Ren & Mingxuan Wu & Hailong Wang & Fengfei Song & L. Ruby Leung & Xin Hao & Jiandong Li & Lei Chen & Huimin Li & Liangying Zeng & Yang Zhou & Pinya Wang & Hong Liao & Jing Wang & Zhen, 2022. "Abrupt emissions reductions during COVID-19 contributed to record summer rainfall in China," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    4. Lu, Yingjie & Li, Tao & Hu, Hui & Zeng, Xuemei, 2023. "Short-term prediction of reference crop evapotranspiration based on machine learning with different decomposition methods in arid areas of China," Agricultural Water Management, Elsevier, vol. 279(C).

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