| 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: ①total mass concentration of different kinds of aerosol is obviously different; ②sea-fog aerosol primarily includes particles of which size ranging from 1 μm to 2.5 μm, and refreshing aerosol, includes particles of which size less than 1 μm, and suspended dust aerosol, includes particles of which size ranging from 2.5 μm to 10 μm. ③precipitation has important role on decreasing larger particle concentration and increasing tiny particle concentration. ④those tiny particles of which size is less than 1 μm, especially less than 0.6 μm, show an activation phenomenon when they located before the surface weather systems, where air humidity is considerable high. ⑤trend of number concentration variability of different particles has different characteristic modes when aerosol property has been changed. |
