Observation study of aerosol spectrum and meteorological conditions under dust weather in Nanjing

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Wang, Fei^1^2 ; Jiang, Qi^3 ; Zhu, Bin^4

Key Laboratory for Cloud Physics, Chinese Academy of Meteorological Sciences, Beijing

100081, China^1

State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing

100875, China^2

National Meteorological Center, Beijing

100081, China^3

Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing

210044, China^4

关键词: Aerosol concentration;    Aerosol properties;    Coarse particles;    Diurnal variation;    Dust intrusions;    Local pollutions;    Meteorological condition;    Ultrafine particle;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/5/052038/pdf
DOI  :  10.1088/1755-1315/227/5/052038

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, the characteristic of aerosol spectrum and meteorological conditions of a dust storm was analyzed on May 2011. To compared with different weather background, another 3 day of aerosol properties were discussed. The results showed that the dust storm was originated in southern Mongolia and central Inner Mongolia, influenced Nanjing through Beijing and Shandong from the direction of southeast. The local pollution was serious before the dust intrusion and the ultrafine particles mainly ≤0.08μm. The coarse particles ≥0.5μm mainly occurred during and after the dust intrusion. Compared with other pollution and clean days in the same season, the aerosol concentration affected by dust storm and local pollution was five times higher than that in the clean days in Nanjing. By the influence of local pollution, the diurnal variation of aerosol showed double peaks which located at about 10:00 and around 20:00, respectively. Dust and precipitation had great influence on aerosol diurnal variation. The dry and wet removal process affected the time of the aerosol concentration peaks.