Prof. Hartmut Herrmann is a Professor of Atmospheric Chemistry at the University of Leipzig andHead of the Atmospheric Chemistry Department (ACD) at the Leibniz Institute for TroposphericResearch (TROPOS) in Leipzig. He is a distinguished visiting Professor at the School of Environmental Science and Engineering of Shandong University at Qingdao and a Concurrent Professor in Environmental Science and Engineering at Fudan University. His research intends to understand the tropospheric multiphase system up to the level of its predictability. Model development is strongly based on experimental work both in the laboratory and in the field. Lab work utilizes state-of-the-art physical and analytical chemistry methods to study gas phase, aqueous phase, organic phase, surface and multiphase phenomena. Field work uses advanced techniques to understand chemical processing and composition of tropospheric particles, clouds and rain in the complex interplay of all the compartments involved.