Abstract
Based on the data of precipitation series of 4 stations with long-term observations in Shandong Province, this paper analyzed the change characteristics of annual precipitation series, including interannual change trend, jump, period and representativeness of the series, by means of sliding average, Mann-Kendall rank correlation test, ordered clustering analysis, Fourier analysis, wavelet analysis, residual mass curve and cumulative average modulus coefficient hydrograph, etc. The results indicated that the annual precipitation series of the 4 stations have slight rising trends. The annual precipitation of Yantai Station mutated obviously in 1950.The annual precipitation series of Linqing, Huangtai Bridge and Qingdao Station have periods of 3, 10, 56 and 80 years.
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