Smoke Injection Heights from Forest and Grassland Fires in Southwest China Observed by CALIPSO

Smoke injection height (SIH) determines the distance and direction of smoke transport, thus impacting atmospheric environment. In this study, we used Cloud-Aerosol Lidar Infrared Pathfinder Satellite Observations data coupled with Moderate Resolution Imaging Spectroradiometer (MODIS) Hybrid Single-Particle Lagrangian Integrated Trajectory model to derive SIH values during peak forest grassland fire seasons from 2012 2017 in Southwest China. The results suggest that ranged 2500 m 2890 m. An analysis dependence on characteristics revealed no obvious correlation between radiative power (FRP) because other factors addition FRP have an important impact SIH. Moreover, MODIS has a drawback representing energy released by real fires, also leading result. topographic variables fires China are very different. Complex topography affects affecting intensity interactions wind. A comparison SIHs boundary layer reveals 75% above layer. Compared areas, higher percentage free troposphere occurs China, indicating can cause air pollution over large ranges. Our work provides better understanding transport vertical distribution