In the face of more frequent flooding events, countries have adopted a series of strategies and measures accordingly, specifically both in structual and non-structual way. In a word, flood management should follow the law of nature, applying the nature-based solutions, integrating green, blue and gray spaces within basins. Each river has its own “genes”, and there are no standardized flood management solutions, so optimization measures should be proposed as far as possible.

An ensemble simulation of five RCMs from CORDEX in East Asia was evaluated and used for future regional climate change projection in China. In addition, the contributions of model uncertainty and internal variability are identified. We found that the multi-model ensemble outperforms the individual RCMs in historical climate simulation. The future climate projections show significant inter-RCM differences and the model uncertainty increases with prediction lead time over all subregions.