The CALIPSO retrieved spatiotemporal and vertical distributions of AOD and extinction coefficient for different aerosol types during 2007–2019: A recent perspective over global and regional scales

In the present study, we investigated global climatology of spatiotemporal and vertical distributions aerosol optical properties for different types, mainly including total aerosols (All), desert dust (DD), polluted (PD), elevated smoke (ES). The data used study is derived from Cloud-Aerosol Lidar Infrared Pathfinder Satellite Observations (CALIPSO) Research Application. We found that seasonal distribution mean depth (AOD) All type in land area are order JJA (0.157) > MAM (0.134) DJF (0.127) SON (0.124). This attributed to more frequent sand activities over Taklimakan Desert Sahara JJA. Owing transportation DD, ES, PD source, ocean areas (especially downwind regions) high AOD, with same trend as area. Also, extinction coefficient (EC) all decreases increase height seasons both hemispheres. maximum EC 0.0102 km?1 (0.016 km?1) during day (night) (JJA) northern hemisphere, while 0.006 (0.008 (SON) southern hemisphere. occurrence frequencies PD, ES distributed throughout entire troposphere seasons, but clean marine (CM) continent (PC) mostly below 3 km.