An accurate simulation of urban weather is crucial in many aspects. Apart from obtaining valid forecasting, the simulation result can also be applied to other models, for instance, air pollution transportation model.
Nowadays, Numerical Weather Prediction model like Weather Research and Forecast Model (WRF) is used for simulating mesoscales weather. Models like Building Environment Parameterisation and Building Energy Model (BEP-BEM) are also established and coupled with WRF (i.e. known as urban WRF, or “uWRF” for short.) so as to take the anthropogenic heat and building geometry into account. Simulation coupling with these models has been applied in different locations. It is found that the simulation results reached a reasonably good agreement with the observation. However, the parameters used in these models differ in different locations, for instance, the physical properties of materials used in buildings, the road width and etc.
Therefore, in order to achieve an accurate simulation in Hong Kong using BEP-BEM in uWRF, a valid configuration on the parameters available in BEP-BEM is necessary. In the current stage of research, a more accurate value of these parameters will be obtained. After having the correct values, case studies of different weather event will be performed to understand the impacts of urbanization.