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

Table 3

Mean annual rainfall trend: MK statistics (one-tailed with 5% significance interval) for the different aggregated periods with and without autocorrelation.

Tests’ outcomes	LRS; mm/yr	SS; mm/yr	⁢ value (α = 5%)
			MK; Std.^1	MK; Y&W^2	MK; H&R^3
1934–2014	+0.051	−0.034	0.922	0.797	0.9260
1934–1976	−0.32^4	−0.45	0.445	0.014	0.166
1977–2014	−0.94	−0.87	0.484	0.124	0.389
1934–1964	+0.58	−0.026	0.986	0.968	0.986
1960–1990	+1.40	+1.36	0.399	0.002	0.141
1984–2014	−0.93	−0.60	0.711	0.510	0.604
1986–2014	−2.37	−2.52	0.161	0.0016	0.0036

p value calculated using standard Mann-Kendall test.
p value calculated using Monte Carlo Simulation taking autocorrelation into account by the methodof Yue and Wang [16].
p value calculated using Monte Carlo Simulation taking autocorrelation into account by the method of Hamed and Rao [17].
The values of LRS and SS in bold correspond to a statistically significant trend with reference to one or more aforementioned MK tests.