Abstract: The extreme precipitation index (R5d) over Chongqing for the 21st century projected by the global climate system models participating in the fourth assessment report of IPCC under the SRES A2, A1B and B1 scenarios has been analyzed in this paper. The results show that compared to the current (1980-1999) climate , R5d over Chongqing will increase in most time of the 21st century under the three SRES scenarios. Especially, R5d will increase more significantly in the later 21st century than in the early and middle 21st century.

Key words: maximum consecutive 5-day precipitation amount, global climate model, simulation, projection, Chongqing