中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2818-2824.doi: 10.1088/1009-1963/16/9/054

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Vertical profiles of aerodynamic size distribution for airborne particles over Yangtze River Delta

王玮1, 鲍林发1, 刘红杰1, 岳欣1, 陈建华1, 李红1, 任丽红1, 汤大钢1, ShiroHatakeyama2, AkinoriTakami2   

  1. (1)Chinese Research Academy of Environmental Sciences, Beijing 100012, China; (2)National Institute for Environmental Studies, Tsukuba 305-8506, Japan
  • 收稿日期:2006-10-09 修回日期:2007-03-12 出版日期:2007-09-20 发布日期:2007-09-20
  • 基金资助:
    Project supported by the State Key Development Program for Basic Research of China (Grant Nos~2002CB211600 and 2002CB410800), Social Public Welfare Project from the Ministry of Science and Technology, China (Grant No~2002DIA20012) and R{\&}D Infrastructure and Facility Development Program (Grant No~2003DEB5J059).

Vertical profiles of aerodynamic size distribution for airborne particles over Yangtze River Delta

Wang Wei(王玮)a)† , Bao Lin-Fa(鲍林发)a), Liu Hong-Jie(刘红杰)a), Yue Xin(岳欣)a), Chen Jian-Hua(陈建华)a), Li Hong(李红)a), Ren Li-Hong(任丽红)a), Tang Da-Gang(汤大钢)a), Shiro Hatakeyamab), and Akinori Takamib)   

  1. a Chinese Research Academy of Environmental Sciences, Beijing 100012, China; b National Institute for Environmental Studies, Tsukuba 305-8506, Japan
  • Received:2006-10-09 Revised:2007-03-12 Online:2007-09-20 Published:2007-09-20
  • Supported by:
    Project supported by the State Key Development Program for Basic Research of China (Grant Nos~2002CB211600 and 2002CB410800), Social Public Welfare Project from the Ministry of Science and Technology, China (Grant No~2002DIA20012) and R{\&}D Infrastructure and Facility Development Program (Grant No~2003DEB5J059).

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摘要： Based on the aircraft observations in the summer of 2003, we have studied the aerodynamic size distributions of airborne particles at altitudes ranging from 400~m to 2800~m over the central and southern areas of Jiangsu province located in Yangtse River Delta of China. The sizes of airborne particles are measured to be in a range of 0.47--30~$\mu $m with 57 channels, and their number concentrations, surface area concentrations and mass concentrations are also measured. The results show that the concentrations of airborne particles are very low above an altitude of 2000~m and the size distributions present a specific multi-peak mode by using insufficient samples. Below 1000~m, however, the concentrations of particles increase obviously, and their size distribution is similar to that at the ground level. The study also indicates that the concentrations, size distributions and median diameters of airborne particles above and below the boundary layer are very different, displaying different pollution features. Meanwhile, the results also show that the pollution level of airborne particles has a descending tendency with altitude increasing.

关键词: airborne particles, aerodynamic size distribution, aircraft observation, \\ \hspace*{1.9cm} Yangtse River Delta

Abstract: Based on the aircraft observations in the summer of 2003, we have studied the aerodynamic size distributions of airborne particles at altitudes ranging from 400 m to 2800 m over the central and southern areas of Jiangsu province located in Yangtse River Delta of China. The sizes of airborne particles are measured to be in a range of 0.47--30 $\mu $m with 57 channels, and their number concentrations, surface area concentrations and mass concentrations are also measured. The results show that the concentrations of airborne particles are very low above an altitude of 2000 m and the size distributions present a specific multi-peak mode by using insufficient samples. Below 1000 m, however, the concentrations of particles increase obviously, and their size distribution is similar to that at the ground level. The study also indicates that the concentrations, size distributions and median diameters of airborne particles above and below the boundary layer are very different, displaying different pollution features. Meanwhile, the results also show that the pollution level of airborne particles has a descending tendency with altitude increasing.

Key words: airborne particles, aerodynamic size distribution, aircraft observation, \\ \hspace*{1.9cm} Yangtse River Delta

中图分类号:  (Environmental studies)

  • 89.60.-k
92.60.Sz (Air quality and air pollution)