Droughts and the Impacts of Dry Spells in North of Iraq

Different sets of dry spell length such as complete series, monthly maximum, seasonal and annual maximum are applied modeled with different probability distribution functions (such Gumbel Max, generalized extreme value, Log-Logistic, logistic, inverse Gaussian, Log-Pearson 3, Pareto) to recognize in which duration, spells cause drought. The drought situation temporal analysis the North Iraq region were done using SPI index by software DrinC at a time scale 3.6 12 months. Because applicability, availability data aim study, is selected analyze this study. Based on available statistical period, statistics for years 1980 2019 used from nine meteorological stations analysis. results study showed severity during period related spells. research confirm variation occurrence varying degrees condition Iraq.