The combination of temperature measurements with rotational Raman lidar and water vapor measurements with differential absorption lidar (DIAL) allows high-resolution profiling of amospheric stability. This is of high interest for studies on the initiation of deep convection. Daytime capability is a key requirement for this task. To our best knowledge, the first buoyancy profiling studies with lidar will be discussed in this contribution. The measurements were performed during the Convective and Orographically-induced Precipitation Study (COPS) on top a 1161 m high mountain (Hornisgrinde, Northern Black Forest, Germany).