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›› 2010, Vol. 27 ›› Issue (3): 331-337.DOI: 10.7523/j.issn.2095-6134.2010.3.005

• Research Articles • Previous Articles     Next Articles

Research on size distribution of particles and its impact on visibility in urban Guangzhou during spring

ZHANG Tao1, TAO Jun2, WANG Bo-Guang1, ZHANG Ren-Jian3   

  1. 1. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;
    2. South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China;
    3. Institute of Atmosphere Physics, Chinese Academy of Science, Beijing 100029, China
  • Received:2009-05-27 Revised:2010-02-05 Online:2010-05-15

Abstract:

High resolution instruments were used to investigate the atmospheric particles distribution characteristics and the impacts on visibility in urban Guangzhou during spring 2008. We found that the particle number density decreased while particle size was growing, along the mass concentration profile there existed two peaks at 0.7μm and 2.5μm, and the rainfall had great effects on scavenging of coarse particles. The rising concentration of those ranging from 0.5μm to 2.5μm was the important reason for the degraded visibility.

Key words: particle mass, number density, mass concentration, size distribution, visibility

CLC Number: