Dr. Zhang’s Atmospheric Chemistry and Air Quality (ACAQ) research group is dedicated to studying the chemical and physical mechanisms that govern the fate of both human-made and natural emissions, as well as their effects on air quality and atmospheric species. Leveraging diverse tools, including a fully equipped mobile lab, ground-based measurement networks, and satellite data, the group focuses on monitoring atmospheric trace gases and aerosols, with particular attention to those that contribute to the formation of tropospheric ozone and particulate pollution.