stations records throughout Iraq. For this purpose, monthly and annual total rainfall records
at stations operated by Iraqi meteorological organization and seismology (IMOS) from 1981
to 2010 were considered. Four methods namely standard normal homogeneity test (SNHT),
Buishand range test, Pettitt test, and von Neumann ratio tests were chosen to detect the
inhomogeneity of the rainfall time series. The results of each of the testing methods were …