Climatic cycles in Iraq's rains

Abstract

     The research concluded that the rainy seasons in Iraq are subject to a system consisting of four rain patterns, which are the low rain cycle, the high rain cycle, the oscillating rain cycle, and the fourth pattern is a single rainy season (non-periodic) that usually separates the previous rain cycles. From the analysis of the three rain patterns, it became clear that they come in the form of two, three, and forth cycles... etc. In general, the low rain cycle is the longest of the cycles, as it can reach (9) consecutive rainy seasons. From the analysis of the rainfall amounts for the low rain cycles, it became clear that the rainfall decreases significantly with the increase in the length of the low rain cycle. According to these results, Iraq must be prepared to face the low rain cycles by maintaining sufficient water storage to face these successive dry seasons, especially the two low rain cycles that recorded the highest frequencies.