A Modeling Study of the Severe Afternoon Thunderstorm Event at Taipei on 14 June 2015: The Roles of Sea Breeze, Microphysics, and Terrain

摘要

On 14 June 2015, a severe afternoon thunderstorm event developed within the Taipei Basin, which produced intense rainfall (with a rainfall rate of 131 mm h(-1)) and urban-scale flooding. Cloud-resolving simulations using the Weather Research and Forecasting (WRF) model were performed to capture reasonably well the onset of the sea breeze and the development and evolution of this afternoon thunderstorm system. The WRF model had four nested grids (with the finest grid size of 0.5 km) in the horizontal direction and 55 layers in the vertical direction to explicitly resolve the deep convection over complex terrain.