Precipitation variations in the Yellow River Basin of China
WANG Yuanjian1,2, FU Xudong1,2, WANG Guangqian1,2
1. Department of Hydraulic Engineering, Tsinghua University, Beijing 10084, China; 2. State Key Laboratory of Hydroscience and Engineering, Beijing 100084, China
Abstract：The precipitation will change in the Yellow River Basin due to global climate changes. The flow in the Yellow River depends on the runoff from various regions and during different periods. Engineers need to predict these flow to make decisions about flood-control projects. The present study investigates the daily series of precipitation in the Yellow River Basin from 67 meteorological stations over the past 59 years (1959—2017) using multiple time-series analysis methods. The results show that the upper and middle parts can be divided into 7 regions. In the source region area of the Yellow River Basin (region Ⅲ), the annual precipitation has increased significantly which provides more water for use in the entire Yellow River Basin. However, in the middle reach (region IV), annual number of days with medium or heavy rains in some areas have significantly decreased, which may be one reason for the reduced water flow and sediment load in recent years in the river. The precipitation frequency information shows the rainfall levels have periods of 2~4 years in the Yellow River Basin. These results give evidence for identifying critical areas that impact the runoff in the Lower Yellow River.
王远见, 傅旭东, 王光谦. 黄河流域降雨时空分布特征[J]. 清华大学学报（自然科学版）, 2018, 58(11): 972-978.
WANG Yuanjian, FU Xudong, WANG Guangqian. Precipitation variations in the Yellow River Basin of China. Journal of Tsinghua University(Science and Technology), 2018, 58(11): 972-978.
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2018, Vol. 58 
