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

Hui-Zheng Che ； Hu-Jia Zhao ； Xian-Gao Xia ； Yun-Fei Wu ； Jun Zhu ； Yan-Jun Ma ； Yang-Feng Wang ； Hong Wang ； Ya-Qiang Wang ； Xiao-Ye Zhang ； Guang-Yu Shi

《Aerosol and Air Quality Research》 15卷5期 (2015/10) Pp. 2065-2081

https://doi.org/10.4209/aaqr.2014.12.0325

並列摘要

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.

並列關鍵字

Fine mode aerosol ； Optical properties ； Northeast China