Trend and Cycle Analysis of Annual and Seasonal Precipitation in Liaoning, China

Figure 6

Graphical representation of the forward series and backward series of Sequential Mann-Kendall Rank Statistic test: (a) Changtu annual precipitation, (b) Xifeng annual precipitation, (c) Xiuyan annual precipitation, (d) Dalian summer precipitation, (e) Xiuyan summer precipitation, (f) Zhuanghe summer precipitation, (g) Benxixian autumn precipitation, (h) Qingyuan autumn precipitation, (i) Yingkou autumn precipitation, and (j) Yixian winter precipitation. Two limit lines are the upper and lower critical values (±1.96, ), respectively. Sequential Mann-Kendall Rank Statistic test is applied only if changing trend of annual and seasonal precipitation series is statistically significant at by using Mann-Kendall test.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)