In his career, he has led several groups of scientists and engineers, with the goal of making “model-relevant” observations of aerosol-cloud-climate interactions. He has authored more than 115 peer-reviewed journal articles on aerosols and clouds. He was the PI for the NASA Earth-Venture-Suborbital-2 project ORACLES (ObseRvations of Aerosols above CLouds and their intEractionS), which according to Forbes magazine is the NASA mission that “arguably has the worst acronym ever”.