Convection-permitting scale Urban Climate Simulation, Projection and adaptation in China

Accurate urban-resolving climate data are essential for urban climate research and applications. However, General Circulation Models(GCMs) often lack the resolution and urban representation needed to provide reliable fine-scale climate information over urban areas.Convection-permitting modeling (CPM) has emerged as a promising solution to this challenge, despite its computational demands. Based on high-resolution regional climate model coupled with urban canopy model, kilometer-scale dynamic downscaling simulations (DDM and CPM) have been proved to be able to maintain the large-scale climate information from the driving fields, and at the same time kilometer-scale dynamic downscaling simulations generates more detailed information on regional or local scale. At the local scale, CPM well reproduced observed precipitation rates at daily and sub-daily time scales, diurnal precipitation variations and urban heat island intensity. Furthermore, we conducted CPM over urban areas under climate change scenarios and proposed kilometer-scale climate change dataset. These insights will greatly enhance future high-resolution regional climate simulations and climate change projections over urban areas in China.