Climate extreme events and their changes can generally exert severe impacts on society and ecosystems and cause large economic losses each year.Robust projections of their future changes are thus urgently important for policymaking to provide reliable information with respect to climate mitigation and adaptation.To date, the climate system models are the primary and effective tools for past and future climate simulations.The previous phase of Coupled Model Intercomparison Project (CMIP5) included more than 40 models that featured substantial improvements and utilized a new set of emission scenarios named Representative Concentration Pathways (RCP), and has produced valuable climate information for policymakers and the scientific community [1-3].The multiple model ensembles have reported more frequently and extremely for most weather and climate events in the future [4-9], and the corresponding model spread showed decrease although the number of models increased in CMIP5 [10,11].