RT Journal T1 Aerosol optical properties on hazy days and clear days at rural and background sites in Shandong Province of China A1 ZHANG Wan, YANG Lingxiao, ZHANG Xiongfei, YAN Weida, WANG Xinfeng, WEN Liang,ZHAO Tong, WANG Wenxing PB Journal of Shandong University(Engineering Science) FD YR 2020 JF Journal of Shandong University(Engineering Science) JO Journal of Shandong University(Engineering Science) VO 50 IS 4 SP 119 DO 10.6040/j.issn.1672-3961.0.2019.541 K1 aerosol optical properties;scattering coefficient;absorption coefficient;diurnal variation;backward trajectory LK {http://gxbwk.njournal.sdu.edu.cn/EN/article/article_1965.shtml}