Full Professor at the University of Perugia, where he teaches Environmental Chemistry and Biogeochemistry and coordinates the ECT (Environmental Chemistry and Technology) research group and the TRACES (Trace Analysis for Chemical Speciation) Laboratory. Founding member of the Italian Aerosol Society, member of the Italian Glaciological Committee, and operator of WGMS (World Glacier Monitoring Service). Author of more than 200 scientific publications on multidisciplinary topics, he has participated in numerous campaigns in the Arctic and coordinated research projects to conduct experiments assessing the properties of atmospheric aerosols and their potential impacts on the cryosphere and climate change. Fellow of the National Academy of Sciences, known as the Accademia degli XL.