Abstract
This paper focus on how river discharge changes when extreme typhoon approaches and also under global warming condition by using distributed hydrologic simulation model.This paper deals with flood caused by extreme typhoon in Kansai-Tyubu area in Japan using the outputs of multi-track approach of Isewan Typhoon carried out by Takemi et al (2012). The damage caused by the typhoon depends on not only the strength but also the track of the typhoon, so it is important to simulate how river discharge changes when typhoon passes another track. Takemi et al carried out pseudo global warming (pgw) experiment by adding bias in future climate. In this paper, the river discharge is also simulated by using pgw experiment. In conclusion, we analyze the river discharge when typhoon passes different track and the difference of discharge between current climate and future climate.