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Fine Mode Aerosol Optical Properties Related to Cloud and Fog Processing over a Cluster of Cities in Northeast China

Category: Optical/Radiative Properties and Remote Sensing

Volume: 15 | Issue: 5 | Pages: 2065-2081
DOI: 10.4209/aaqr.2014.12.0325
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Huizheng Che 1,2, Hujia Zhao3, Xiangao Xia4,5, Yunfei Wu6, Jun Zhu4, Yanjun Ma3, Yangfeng Wang3, Hong Wang1, Yaqiang Wang1, Xiaoye Zhang1, Guangyu Shi7

  • 1 Key Laboratory for Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, CMA, Beijing 100081, China
  • 2 Jiangsu Collaborative Innovation Center for Climate Change, Nanjing, 210093, China
  • 3 Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110016, China
  • 4 Laboratory for Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • 5 Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • 6 Key Laboratory of Regional Climate-Environment for Temperate East Asia(RCE-TEA),Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • 7 State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China


Fine mode aerosol optical properties at Northeast China (NEC) were discussed.
Fine mode aerosol radius increased with AOD obviously at NEC.
Tri-mode distribution related to cloud and fog processing was found at NEC.


Fine mode aerosol optical properties were retrieved from sunphotometer measurements, carried out in Shenyang, Anshan, Benxi, and Fushun in Northeast China from 2009–2013. Accumulation mode aerosol size distribution retrievals were investigated for specific situations involving extensive cloud processing during fog or haze. Large fine mode median radii (≥ 0.20 µm) frequently occurred at the four sites in July. At other times, as aerosol optical depths increased so did the fine mode median radii, reaching 0.30–0.40 µm. This was possibly due to aerosol humidification during cloud processing. Instances of large (~1.50) Alpha curvature at the sites also may be associated with cloud processing. When single scattering albedos were ≥ 0.90, the radii distributions were centered round 0.30–0.40 µm at all at sites except Benxi, perhaps due to non-absorbing material from aerosol/cloud interactions. Case studies of size distribution retrievals at each of the four sites showed that large accumulation mode radii (0.40–0.50 µm) may be linked to cloud processing.


Fine mode aerosol Optical properties Northeast China

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