Dr Hao Sun is a Research Fellow at the Global Centre for Clean Air Research (GCARE), University of Surrey. He obtained his PhD from the University of Nottingham, specializing in computational fluid dynamics (CFD) simulations and wind tunnel experiments to investigate the impact of green infrastructure and other passive technologies on pollutant dispersion. His research interests extend to the effects of sustainable energy technologies on building aerothermal environments, energy efficiency, and thermal comfort. In the GP4Streets project, he focuses on air pollution, green infrastructure modelling and big data analysis under the supervision of Professor Prashant Kumar.