Cheng Nianliang,Wang Xiao,Feng Yu

• 1:College of Water Sciences
• 2:Beijing Normal University
• 3:Beijing Municipal Environmental Monitoring Center
• 4:College of Resources and Environmental Sciences

摘要(Abstract)：

The spatial distribution and deposition of PM_(2. 5) in coastal areas of eastern China in 2010 were simulated using the CMAQ model. The results show that the simulated data were consistent with the observed data,and the model could simulate the regional distribution of PM_(2. 5) concentration. There were obvious seasonal variations in PM_(2. 5) concentration in eastern China,and the spatial distribution of PM_(2. 5) concentration which increased from the edge to the center of a city coincided well with that of the sources. In North China,the high-value center of PM_(2. 5) concentration reached above 120 μg/m~3. Wet deposition was the main way to remove PM_(2. 5) ,and wet deposition flux of PM_(2. 5) was at least five times more than that of the dry deposition flux. Deposition flux of PM_(2. 5) was the largest in summer,while it was the smallest in winter. The high-value center of deposition flux of PM_(2. 5) in eastern China exceeded 30 mg /( m~2·d). Wet deposition of PM_(2. 5) in each province or region accounted for more than 91% of total deposition of PM_(2. 5) . Total deposition of PM_(2. 5) in all simulated regions amounted to 4. 67 × 10~6 t/a,and total deposition of PM_(2. 5) in Beijing,Tianjin and Hebei was up to 1. 65 × 10~6 t/a.

关键词(KeyWords)：

Abstract:

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基金项目(Foundation): Supported by the National Natural Science Foundation of China(41373131);; National Key Technology R&D Program(2014BA C23B03)

作者(Author): Cheng Nianliang,Wang Xiao,Feng Yu

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