Future urban heat island influence on precipitation

Abstract Urbanization and global warming are two of the major human impacts on environment. The Urban Heat Island (UHI) effect can change precipitation patterns. Global also leads to changes in especially an increase intensity frequency extreme precipitation. With urbanization expected grow future, role UHI a warmer climate is important research question. We present results from 20-year long regional convection-permitting model simulations that include effect, run for historical future climates megacities, Paris Shanghai. In climate, urban-induced found decrease compared both mean precipitation, with large uncertainties due natural variability. 2.2± 1.4% 1.8 ± 1.3% conditions, respectively. Shanghai has slightly weaker than at no future. reduction urban be caused by summer cities. Interannual variability larger Paris. reduced area more concentrated. general warming, combination redistribution UHI, underline importance planning mitigate damage events.