Dr. Decesari is senior researcher at the Institute of Atmospheric Sciences and Climate (ISAC) of the National Research Council of Italy. He has been working in the field of physical and chemical processes in multiphase atmospheric systems (aerosols and clouds) for 20 years. He is a specialist of atmospheric organic aerosol chemistry with documented experience on biomass burning aerosols and biogenic organic aerosols. He has developed original methodologies based on nuclear magnetic resonance (NMR) spectroscopy for chemical characterization and source attribution of complex organic atmospheric particulate matter. He is author or coauthor of more than 100 peer-reviewed publications (H-index = 49). He took part to ten EU research projects dealing with atmospheric particulate matter climate and air quality impacts, and he coordinated three international experimental field campaigns. He coordinated the EU project “Himalayan Brown Cloud” (FP7 MSC IEF) focusing on the combustion aerosols impacts on the high Himalayan environment, and he is currently coordinator of the 1 M€ project “IPA/BC-Monitor” (POR FESR 2014 – 2020 Emilia-Romagna) dealing with the development of an innovative instrument for monitoring black carbon and organic pollutants. He is board member of the Italian Aerosol Association and member of the atmospheric working group of the International Arctic Science Committee (IASC).