In his latest PhD work, Jonathan Simon investigated the impact of different tree representation approaches on urban climate modelling. He modelled over 4,000 trees in the Wittelsbacher Park in Augsburg and compared the effects of trees on human thermal comfort levels across sixteen scenarios. It was found that the latest L-trees based on the Lindenmayer systems outperformed older grid-based and simple plant models. Tree species, height, and leaf-area density strongly influenced thermal comfort. Together with his colleagues Jacqueline Oster and his supervisor Christoph Beck, he published the results of this methodological study in the June 2026 issue of the Urban Climate journal under the title „Impact of tree representation on urban climate modelling: Insights from ENVI-met simulations in Augsburg, Germany” (https://doi.org/10.1016/j.uclim.2026.102879, open access).