The PPNW workshop focuses on physical processes in inland and coastal waters and their interaction with biogeochemical, atmospheric, and groundwater processes. We invite abstracts from all areas of physical limnology, including open-water and under-ice processes, sediment transport, modelling of physical dynamics, salt exclusion, suppression of turnover, salinity stratification, ebullition, and physical-biogeochemical interactions, in both natural and constructed water bodies and also pollution in any aquatic ecosystem. PPNW is an open workshop that actively seeks collaboration with related fields such as physical oceanography, atmospheric sciences, and engineering. The PPNW is a moderate-sized meeting of 40-60 participants, and it is designed to provide an atmosphere with enough time for a broad discussion and collaboration.