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By investigating the inter-comparison between individual model and multi-model ensemble (MME) from the Coupled Model Intercomparison Project Phase 5 (CMIP5), model uncertainty on summer precipitation over Eastern China is analyzed. Although MME has the ability in reproducing summer precipitation over Eastern China, large model spread exists among models in both climatology and interannual variation. The model uncertainties are small in relatively weak rainfall, but large in heavy or none rainfall. Two possible reasons are proposed for the large uncertainties: different partitioning of stratiform/convective precipitation and horizontal resolutions. As a continued work, sensitivity of uncertainty to model resolutions are further investigated from the aspect of global precipitation. High-resolution MME (HMME) has much lower-frequency but stronger precipitation events than low-resolution MME (LMME) over …