A study on spatial and temporal variation characteristics of precipitation in different topographic regions of Hebei Province based on Anusplin and wavelet analysis
In this paper,the daily precipitation data of 124 representative meteorological stations in Hebei Province from 1961 to 2014 are used to quantitatively analyze the spatial and temporal characteristics of precipitation in different terrain areas of Ji'nan,Ji'nan and Ji'nan-east by using Anusplin interpolation method,MaanKendall test and wavelet analysis method.The results show that the rate of precipitation change in Hebei Province over the past 60 years is not synchronized,and its climatic tilt slopes are Northeast Hebei(-1.95 mm/a)＜South Hebei(-0.71 mm/a)＜North Hebei(0.35 mm/a),respec-tively,but are not significant(P＞0.05).Multiple abrupt changes in precipitation variability occurred in the three Hebei re-gions and did not pass the 5%confidence test.All three major topographic regions of Hebei have a 32a primary cycle of change,but the secondary cycle is slightly different.The results of this paper are useful for climate change prediction and wa-ter resource management in Shijiazhuang area.
NETL
NSTL
万方数据
