Impacts of Atmospheric Boundary Layer Vertical Structure on Haze Pollution Observed by Tethered Balloon and Lidar

• DOI: 10.1007/s13351-021-0076-4
• Publication Date: 2021-02-25T09:02:22Z
• Authors: Haijiong Sun; Yu Shi; Lei Liu; Weichen Ding; Zhe Zhang; Fei Hu
• Keywords: Haze; Convective Boundary Layer

In this paper, the characteristics of atmospheric boundary layer (ABL) vertical structure over North China Plain (NCP) during a comprehensive observation experiment conducted 15–21 December 2018 were investigated. Observational data obtained with large tethered balloon, Doppler wind lidar, and ground-level instruments. The maximum concentration PM2.5 exceeded 200 µg m−3, ratio PM2.5/PM10 was approximately 0.4 (its maxi-mum 0.8) whole period, indicating explosive growth dominant fine-mode aerosols in winter heating season. Elevated concentrations pollutants decreased solar irradiance received by ground, resulting lower temperature at ground level. Our results illustrate three distinct types profiles: Type 1 (convective state)—the nearly linearly increase height below 600 m; 2 (stable sharply from to 3 (multilayer structure)—some suspended aloft upper air layer. Diurnal evolution profiles their relationship changes meteorological factors identified. From daytime nighttime, evolved or 3. All 33 that we showed strong elements ABL structure, such as distributions winds, inversion layer, turbulence activities. A light-wind weak activity, especially within contributed greatly accumulation pollutants. Vertical patterns also affected local emission sources regional transport processes.