UUL AARHUS is committed to developing transferable planning methods supporting climate neutrality, particularly through the afforestation of vulnerable urban and peri- urban areas. The new ambitious tree planting schemes need to address the issues of the challenging wind environment and the impacts of extreme weather events. ULL Aarhus will also address the wind-tree interaction, but largely through an experimental approach and innovative measurement methods to capture wind-tree-air pollution interaction. It will also become a centre for cross-comparing low-cost air quality sensor systems. Finally, ULL Aarhus will become a starting point to establish the network of ULLs and will lead the piloting and demonstration of the horizontal communication, the transfer of new knowledge, and the case-to-case data-driven approach put into practice.