Smoke Injection Height of Wildfire Event Based on Multi-Source Remote Sensing Data in Yunnan Province, China

摘要

Highly frequent wildfires are observed every year in Yunnan province, China. This study investigated the smoke injection height in a wildfire event using multi-source remote sensing data in Yunnan. The wildfire event was identified and characterized by combining MODIS and Landsat-8 data. The smoke injection height of the event and the vertical profile of smoke aerosol were inferred from CALIPSO data. The results showed that although the burned areas were only 167.67 ha, the maximum smoke injection height of the wildfire event can reach approximately 4.63 km above sea level. In addition, by comparing the smoke injection height with that of other types of fire events, we found that the plumes of the wildfire event in Yunnan were the most likely candidates for injecting smoke into the free troposphere and producing smoke transport. This study has significant implications for understanding the impact of wildfire smoke plumes on air quality in Yunnan.