[2] H. Wu, , M. J., Hayes, D. A., Wilhite, & Svoboda, M. D.. "The effect of the length of record on the standardized precipitation index calculation". International Journal of Climatology: A Journal of the Royal Meteorological Society, 25(4), 505-520 (2005).
[3] A. K., Mishra, V. R., Desai, & V. P. Singh,. "Drought forecasting using a hybrid stochastic and neural network model". Journal of Hydrologic Engineering, 12(6), 626-638 (2007).
[4] T. A., Awchi, & M. M. Kalyana,. Meteorological drought analysis in northern Iraq using SPI and GIS. Sustainable Water Resources Management, 3(4), 451-463 (2017).
[5] S. M., Kassim, A. M., Younis, O. M. Agha. Temporal and Spatial Analysis of Drought Using the Standard Precipitation Index for the Northwestern Region of Iraq. AREJ, No.1, Vol.26, pp115-127 (2021).
[6] A. I., Jasim, & T. A. Awchi, Regional meteorological drought assessment in Iraq. Arabian Journal of Geosciences, 13(7), 1-16 (2020)..
[7] S. M., Kassim, Analysis of Meteorological Drought using standardized precipitation index (SPI) for different time scale -a case study of Iraq. M. Sc. Thesis, College of Engineering, University of Mosu (2021) l.
[8] K.Subramanya, Engineering hydrology, 4e. Tata McGraw-Hill Education (2013). .
[9] O. M. A., Agha, & N. Sarlak,. Analysis of Meterological Drought in Iraq Using The Reconnassaince Drought Index (RDI). International Journal of Advanced Research (IJAR) Vol, 5(3), 473-479 (2017).
[10] G., Tsakiris, D., Pangalou, & H. Vangelis,. Regional drought assessment based on the Reconnaissance Drought Index (RDI). Water resources management, 21(5), 821-833 (2007)..
[11] A. Al-Mohseen, K., & RM Towfeeq, A.. Artificial Neural Network for Single Reservoir Operation. Al-Rafidain Engineering Journal (AREJ), 22(2), 29-37 (2014).
[12] F. K., Saeed, K. A.,Almohseen, & A. M. Younis, .”The Use of Artificial Neural Networks in the Analysis of Seepage and Slope Stability for the Proposed Qaim Dam on the Khosar River”. Al-Rafidain Engineering Journal (AREJ), 26(1), 96-104 (2021)..
[13] S., Pashiardis, & S. Michaelides,. Implementation of the standardized precipitation index (SPI) and the reconnaissance drought index (RDI) for regional drought assessment: a case study for Cyprus. European Water, 23(24), 57-65 (2008) .
[14] M. A. A., Zarch, H., Malekinezhad, M. H., Mobin, Dastorani, M. T., & Kousari, M. R.. Drought monitoring by reconnaissance drought index (RDI) in Iran. Water resources management, 25(13), 3485 (2011).
[15] O. M. A., Agha, Climate Trends and Behavior of Drought Indices: Case study of Iraq. Ph.D. Thesis, Civil Engineering, University of Gaziantep .
[16] G., Tsakiris, I., Nalbantis, D., Pangalou, D., Tigkas, & H. Vangelis,. "Drought meteorological monitoring network design for the reconnaissance drought index (RDI). In Proceedings of the 1st International Conference “Drought management: scientific and technological innovations” ". Zaragoza, Spain: option Méditerranéennes, series A (No. 80, p. 2008).
[17] D. Tigkas,. Drought characterisation and monitoring in regions of Greece. European Water, 23(24), 29-39 (2008).
[18] D., Tigkas, H., Vangelis, & G. Tsakiris, (2013). The RDI as a composite climatic index. Eur Water, 41, 17-22.
[19] H., Vangelis, D., Tigkas, & G. Tsakiris,. The effect of PET method on Reconnaissance Drought Index (RDI) calculation. Journal of Arid Environments, 88, 130-140 (2013).
[20] F. A., Al-Faraj, M., Scholz, D., Tigkas, & M. Boni,. Drought indices supporting drought management in transboundary watersheds subject to climate alterations. Water Policy, 17(5), 865-886 (2015).
[21] S., Barua, Ng, A. W. M., & B. J. C. Perera, Artificial neural network–based drought forecasting using a nonlinear aggregated drought index. Journal of Hydrologic Engineering, 17(12), 1408-1413 (2012)..
[22] A. S. Y., AL-Dabbagh, K. A., AL-Mohseen, & I. A AL-Aani,. Estimating Daily Reference Evapotranspiration for Mosul Area Using Artificial Neural Networks. Al-Rafidain Engineering Journal (AREJ), 15(4), 16-27 (2007).
[23] A. K., Mishra, & V. R. Desai,. Drought forecasting using feed-forward recursive neural network. ecological modelling, 198(1-2), 127-138 (2006).
[24] H., Razmkhah, E., Rostami, A. R., Ravari, & A. Fararouie, . “Evaluation and Forecasting Meteorological Drought, Case Study: Kohgilooyeh and Boyer Ahmad” (2021).
[25] M.M. Kiliana, . “Modeling and Analysis of Drought in the North of Iraq”. M. Sc Thesis , College of Engineering , University of Mosu (2013) l.
[26] S. M., Kassim, Analysis of Meteorological Drought using standardized precipitation index (SPI) for different time scale -a case study of Iraq. M. Sc. Thesis, College of Engineering, University of Mosul (2021) .
[27] N. F., MUSTAFA, H. M., RASHID, & H. M. IBRAHIM,. Aridity index based on temperature and rainfall data for Kurdistan region-Iraq. Journal of Duhok University, 21(1), 65-80 (2018).
[28] R. M., Qasab Bashi, A. M., Younes, & O. M. Mahmood Agha,. Testing of the Homogeneity of Rain and Temperature Data: in an area Kurdistan Region – Iraq. Al-Rafidain Engineering Journal (AREJ), 26(2), 227-236 (2021). doi:10.33899/rengj.2021.130076.1095.
[29] D., Tigkas, H., Vangelis, & G. Tsakiris, . “DrinC: a software for drought analysis based on drought indices”. Earth Science Informatics, 8(3), 697-709 (2015).
[30] M. T. Jones,. Artificial Intelligence: A Systems Approach: A Systems Approach. Jones & Bartlett Learning (2008).
[31] Sandhu, R., & Irmak, S.. Performance of AquaCrop model in simulating maize growth, yield, and evapotranspiration under rainfed, limited and full irrigation. Agricultural Water Management, 223, 105687 (2019).