Statistical Analysis for the Detection of Change Points and the Evaluation of Monthly Mean Temperature Trends of the Moulouya Basin (Morocco)

Table 6

Results of the 3 change point detection methods applied to mean annual temperature data between 1980 and 2020 in the Moulouya watershed.

	Pettitt’s test			Buishand’s range test			von Neumann ratio test
	value	Significance	Date	value	Significance	Date	value	Significance	Date
S1	≤0.01		1999	≤0.001		2008	≤0.001
S2	≤0.001		1999	≤0.001		1999	≤0.001
S3	≤0.001		2000	≤0.001		2003	≤0.01
S4	≤0.001		2000	≤0.001		2002	≤0.001
S5	≤0.01		2005	≤0.001		2005	≤0.01
S6	≤0.01		2005	≤0.001		2005	≤0.001
S7	≤0.001		1998	≤0.001		1998	0.015
S8	≤0.001		1993	≤0.001		1993	≤0.001
S9	≤0.001		2003	0.013		1992	0.290	N

N, no significant change point, ^∗significant point of change at 0.1 level, ^∗∗significant point of change at 0.05 level, ^∗∗∗significant change point at 0.01 threshold.