Abstract:The summer precipitation over the central and eastern Tibetan Plateau (TP )is mainlycharacterized by a dipole pattern with seesaw changes in the northeast and southeast. Based on theempirical orthogonal function (EOF)analysis,the abilities of 47 models participating in the CoupledModel Intercomparison Project Phase 5 (CMIP5)historical experiments to simulate the dipole oscillationof summer precipitation over the central and eastern TP are systematically evaluated. The results showsthat most of the models can reproduce the seesaw structure of summer precipitation anomalies in thenortheast and southeast of the central and eastern TP. However,the inter-model EOF analysis shows that the east-west simulation deviation in the south of 35°N stands out as the most prominent deviation ofCMIP5 models in simulating spatial patterns of precipitation. Most of the models are worse at simulatingtime coefficients than spatial patterns. A comprehensive evaluation index Snew is defined to quantitativelydescribe the comprehensive simulation performances of 47 CMIP5 models on spatial patterns,timecoefficients,and variance contribution. From the quantitative evaluation results, MIROC-ESM, HadGEM2-CC,and ACCESS1-0 (FIO-ESM,HadGEM2-AO,and MIROC-ESM-CHEM)models performrelatively well in the comprehensive simulation on EOF1 (EOF2)mode of observed precipitation,whilethe GISS series models,CESM1-CAM5,and MPI-ESM-LR (CMCC-CESM,MPI-ESM-MR,and GFDL-CM3)models have poor comprehensive simulation performance on EOF1 (EOF2)mode of observedprecipitation. Based on the comprehensive evaluation results of EOF1 and EOF2,it is found that MIROC-ESM-CHEM model has the best comprehensive simulation performance on the two leading EOF modes ofobserved summer precipitation over the central and eastern TP.