Received: 22 September 2018 Revised: 2 December 2018 Accepted: 8 January 2019 DOI: 10.1002/met.1778 RESEARCH ARTICLE Investigation of drought in the northern Iraq region Kasım Yenigun1 | Wlat A. Ibrahim2 1Civil Engineering Department, Harran University, Engineering Faculty, S¸anlıurfa, Turkey Drought is a phenomenon of climate and is one of the catastrophic events that 2Graduate School of Natural and Applied cause much damage on each occurrence. One of the ways of drought adjustment, Sciences, Harran University, S¸anlıurfa, Turkey evaluation and drought monitoring is based on indicators that can be used to deter- Correspondence mine its extent and continuity in a region. In this study, drought analysis (the dura- Kasim Yenigun, Civil Engineering Department, tion and severity of drought) in the north Iraq region was studied by using the Harran University, Engineering Faculty, Osmanbey Campus, 63200, S¸anlıurfa, Turkey. Standardized Precipitation Index (SPI) for time intervals of 1, 3, 6, 9 and Email:
[email protected] 12 months. That feature of this method helps to compare the drought events in dif- ferent places and scales. To observe dry and wet periods and the severity and length of drought monthly rainfall data of 15 meteorological stations of the north- ern Iraq provinces from 1979 to 2013 were used. Calculations were performed on the SPI by using the SPI code in MATLAB computer software. The results of the study showed that the continuity of dry periods in the 6, 9 and 12 month periods was higher than in the 1 and 3 month time intervals. Moreover, according to the calculation, the driest year was observed in 2008.