Convection-permitting simulations of current and future climates over the Third Pole region

The Third Pole (TP) region, known as the Asian Water Tower, provides a vital water resource for downstream regions. Here we introduce a first set of high-resolution climate change simulations that permit convection at approximately 3.3-km grid spacing with a focus on the TP region using the Icosahedral Nonhydrostatic Weather and Climate Model (ICON). Two 12-year simulations were performed, consisting of a retrospective simulation (2008-2020) with initial and boundary conditions from ERA5 reanalysis and a pseudoglobal warming projection driven by modified reanalysis-derived initial and boundary conditions by adding the monthly CMIP6 ensemble-mean climate change under the SSP5-8.5 scenario. ​Attached are the monthly mean precipitation and surface air temperature over the TP from both present-day and future climate simulations with ICON. These ICON-downscaled climate change simulations provide a high-resolution dataset to the CORDEX CPTP FPS community for the study of regional climate changes and impacts over the TP.