Climatic Characteristics and Forecast of the Flow of Heihe River in the Hexi Corridor Area

Using the data set of the flow of Heihe river, we have analyzed the persistence, periodicity and annual variation of the flow. It is shown that there is a good positive correlation between the flow of Heihe river in April and surface heating field over the Qinghai-Xizang Plateau in February of the year. The departure characteristics of 500 hPa in March have the predictability to the flow of Heihe river for coming May.