Assessment of Seasonal and Annual Rainfall Trends and Variability in Sharjah City, UAE

Table 1

Homogeneity tests (two-tailed, α = 5%) of Sharjah annual rainfall applied to different aggregated periods.

Annual rainfall period	Statistical measures	value estimation		Data homogeneity	Year of break point
		SM	MCS
1934–2014	SNHT	—	0.683	Yes	2010
	Pettitt’s	<0.001	0.781	Yes: MCS	1998
	Buishand’s	<0.001	0.739	Yes: MCS	1998
	von Neumann’s	<0.001	0.014	No	—
1934–1976; Old Sharjah airport	SNHT	—	0.787	Yes	1974
	Pettitt’s	1.756	0.652	Yes	1944
	Buishand’s	1.756	0.936	Yes	1964
	von Neumann’s	1.756	0.406	Yes	—
1977–2014; New Sharjah Airport	SNHT	—	0.365	Yes	1998
	Pettitt’s	0.42	0.215	Yes	1998
	Buishand’s	0.42	0.15	Yes	1998
	von Neumann’s	0.42	0.003	Yes: SM	—
1934–1964	SNHT	—	0.788	Yes	1953
	Pettitt’s	0.022	0.766	Yes: MCS	1953
	Buishand’s	0.022	0.592	Yes: MCS	1953
	von Neumann’s	0.022	0.515	Yes: MCS	—
1960–1990	SNHT	—	0.537	Yes	1974
	Pettitt’s	0.295	0.305	Yes	1974
	Buishand’s	0.289	0.29	Yes	1974
	von Neumann’s	0.138	0.141	Yes	—
1984–2014	SNHT	—	0.417	Yes	1998
	Pettitt’s	1.596	0.32	Yes	1998
	Buishand’s	1.596	0.187	Yes	1998
	von Neumann’s	1.596	0.001	Yes: SM	—

Yes: MCS: if the homogeneity is exclusively valid using Monte Carlo Simulation (MCS). Yes: SM: if the homogeneity test is exclusively valid using standard method (SM).