The Analysis of Precipitation and Flooding Features in the Huaihe River Basin during the Summer of 2007
2007年汛期淮河流域致洪暴雨的雨情和水情特征分析

The intensive observed precipitation data and hydrological information on Huaihe River Basins(referred as HRB hereinafter) are employed to analyze the spatial-temporal distribution of precipitation and flooding features during the summer of 2007.Comparison is made with the years of 1954 and 2003 for the same period.Results show that the total precipitation,river-level and flow are higher than those of 2003,but less than of 1954.The precipitation over Huaihe River Basin are produced by 10 weather processes from June 19 to July 23.The rainband over HRB from June 19 to July 23 is relatively stationary and stronger.From June 18 to 28,the severe precipitation occurring over the upper reaches of HRB makes the water-level increasing to relative high level.And after June 29,severe precipitation moves to the middle and lower reaches of HRB,which induce to water-level increase to alert level.The long-range stationary rainy band over HRB is caused by westhward-extended stable subtropical high and activities of cold air from middle latitude.