[4] HUA Y, WANG S, WANG J. Investigating the impact of regional transport on PM2.5 formation using vertical observation during APEC 2014 Summit in Beijing[J]. Atmospheric Chemistry & Physics, 16, 15451-15460(2016).

[5] WU Hong, ZHANG Yu-fen, HAN Su-qin. Vertical characteristics of PM2.5 during the heating season in Tianjin, China[J]. Science of the Total Environment, 5, 152-160(2015).

[6] PENG Zhong-ren, WANG Dong-sheng, WANG Zhan-yong. A study of vertical distribution patterns of PM 2.5 concentrations based on ambient monitoring with unmanned aerial vehicles:A case in Hangzhou, China[J]. Atmospheric Environment, 12, 357-369(2015).

[7] CHEW B N, CAMPBELL J R, HYER E J. Relationship between aerosol optical depth and particulate matter over singapore:effects of aerosol vertical distributions[J]. Aerosol & Air Quality Research, 16, 2818-2830(2016).

[9] FERNALD F G. Analysis of atmospheric lidar observations:some comments[J]. Applied Optics, 23, 652(1984).

[11] HULST H C[M]. Light scattering by small particles, 87-94(1981).

[14] COLLIS R T H, RUSSELL P B[M]. Lidar measurement of particles and gases by elastic backscattering and differential absorption, 71-151(1976).

[16] [16] DENG Zuqin, ZHANG Lei. Vertical distributions of dust aerosols derived from CALIPSO CloudSat observations in Hexi Crid[C]. 2016 IEEE International Geoscience Remote Sensing Symposium (IGARSS), 2016: 40904092.