Abstract: Continuous observation of atmospheric aerosol scattering properties was conducted from 17 December 2005 to 14 February 2006 in Taiyuan using the Integrating Nephelometer. The results indicate that the mean value of the scattering coefficient was (850.2±611.3) Mm-1. The frequency distribution of the hourly average scattering coefficient had a maximum in the range of 200-300 Mm-1. The diurnal variation of the scattering coefficient presents a curve of two peaks. The hourly average concentration of PM2.5 and scattering coefficient are significantly correlated (R2=0.82). It is found that the atmospheric aerosol scattering properties are comprehensively affected by the meteorological conditions.

Key words: Taiyuan, scattering coefficient, PM2.5, meteorological conditions