Based on weather data and data obtained by Particle Sizer GRIMM180 set up in Qingdao, aerosol was qualitively classified into sea-fog aerosol, refreshing aerosol and suspended dust aerosol. Analysis of mass concentration and number concentration of three different kinds of aerosols was conducted, and the results are shown as below: 1) total mass concentration of different kinds of aerosol is obviously different; 2) sea-fog aerosol primarily includes particles of which size ranging from 1 microm to 2.5 microm, and refreshing aerosol, includes particles of which size less than 1 microm, and suspended dust aerosol, includes particles of which size ranging from 2.5 microm to 10 microm. 3) precipitation has important role on decreasing larger particle concentration and increasing tiny particle concentration. 4) those tiny particles of which size is less than 1 microm, especially less than 0.6 microm, show an activation phenomenon when they located before the surface weather systems, where air humidity is considerable high. 5) trend of number concentration variability of different particles has different characteristic modes when aerosol property has been changed.
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