The Third Meeting between TRS Team Members and Building Technology Research Institute on Wind Environment Research

On May 21st 2026, Prof. Yi-Qing Ni, Dr. E Deng, Mr. Guang-Zhi Zeng, Mr. Shang-Qi Zhou and Ms. Roxanne Liu of The Hong Kong Polytechnic University travelled to the Building Research Technology Research Institute (BRTi) to engage in an in-depth discussion with Dr. Lilian Hui, Deputy Section Head and Mr. Edwin Tang, Deputy Section Head. Other participants included Mr. Kwok-Kit Yam, the Technical Secretary and Ms. Lina Chan, a structural engineer, both from the Buildings Department (BD).

Mr. Zeng began the meeting by introducing the WRF reconstruction simulation methodology using T10 typhoon cases provided by the Hong Kong Observatory (HKO). Firstly, he explained that their WRF data assimilation methodology incorporated data from HKO wind measurement stations, the LiDAR network at The Hong Kong Polytechnic University, and water vapour channel observations from the Himawari-9 satellite. Following this, he elaborated how the team developed a regional climate model, driven by General Circulation Model (GCM) temperature projections, to investigate changes in typhoon intensity and their subsequent impacts on urban wind fields under future climate scenarios. Finally, Mr. Zeng showcased their preliminary wind speed results across the northern and southern regions in Hong Kong from a simulation of Typhoon Saola under various global warming scenarios, with predicted wind speed scenarios extending to 2060.

PolyU’s simulation outputs sparked discussions amongst the participates, regarding which previous typhoon cases that caused significant impacts on Hong Kong should be prioritised for the WRF reconstruction simulations in time for the BRTi Workshop in June 2026. The meeting concluded with an agreed set of typhoons to be examined and on the future climate projection period to be adopted, specifically whether the climate change modelling should extend to 2060 or 2100.