The Mann-Kendall test for temperature trends in some selected stations in Iraq

Abstract EN

In this paper, Mann-Kendall test was used to investigate the existence of possible deterministic and stochastic climatic trends in (Baghdad, Basrah, Mosul, Al-Qaim) stations.

The statistical test was applied to annual monthly mean of temperatures for the period (1993-2009).

The values of S-statistic were (62, 44, 52, 64) by comparing these values with the table of null probability values for S we get a probability of (0.002, 0.026, 0.010, 0.002) this result is less than α for the 95 % confidence level (α = 0.05) indicating a significant result at this level of confidence.

Concluded that an increasing trend in concentration is present at the 95 % confidence level and the variance of the S-statistic is calculated and it is compared to the table of null probability values for Z and our conclusion reject the null, there is an increasing of trend.