Xieyao Ma1, Takao Yoshikane1, Masayuki Hara1, Fujio Kimura1, 2 and Yoshihiro Fukushima3
1 Frontier Research Center for Global Change, Japan;2 University of Tsukuba, Japan;3 Research Institute for Humanity and Nature, Japan

Abstract: To evaluate the change of water resources over the Yellow River basin, an examination of precipitation was carried out using the Weather Research and forecasting (WRF) model, a nest generation regional climate model over the Yellow River domain from 1980 to 1997. The results show that the inter-annual variations of precipitation could be represented compared with a dataset based on gauge record at four watersheds over Sanmenxia. The simulated precipitation at two watersheds in upper reaches is in agreement with observed values. There is underestimation at other watershed in middle reaches. The distribution of annual precipitation over the whole basin is almost reproduced. The estimated decreasing areas of precipitation between the period of 1980-1989 and 1990-1997 also agree well with the dataset.

Key words: Application£¬ Regional Climate Model£¬ the Yellow River Basin£¬Precipitation Modeling