Ahmadi F, Dinpajhoh Y, Fakheri Fard A, Khalili K and Darbandi S 2015 Comparing nonlinear time series models and genetic programming for daily river flow forecasting (Case study: Barandouz-Chai River); J. Water Soil Conserv. 22(1) 151–169 (in Persian), http://jwsc.gau.ac.ir/article_2363.html.
Akhtari R, Morid S, Mahdian M H and Smakhtin V 2009 Assessment of areal interpolation methods for spatial analysis of SPI and EDI drought indices; Int. J. Climatol. 29 135–145, https://doi.org/10.1002/joc.1691
Alvisi S, Mascellani G, Franchini M and Bardossy A 2006 Water level forecasting through fuzzy logic and artificial neural network approaches; Hydrol. Earth Syst. Sci. 10 1–17, https://doi.org/10.5194/hess-10-1-2006.
American Meteorological Society 1997 Policy statement: Meteorological drought; Bull. Am. Meteorol. Soc. 78 847–849.
Aytek A and Asce M 2008 An application of artificial intelligence for rainfall runoff modeling; J. Earth Syst. Sci. 117(2) 145–155, 10.1007/s12040-008-0005-2.
Bazrafshan O, Salajegheh A, Bazrafshan J, Mahdavi M and Fatehi Maraj A 2015 Hydrological drought forecasting using ARIMA models (Case Study: Karkheh Basin); Ecopersia 3(3) 1099–1117, http://ecopersia.modares.ac.ir/article_14033.html.
Borelli A, DeFalco I, Della C A, Nicodemi M and Trautteur G 2006 Performance of genetic programming to extract the trend in noisy data series; Physica A 370 104–108, https://doi.org/10.1016/j.physa.2006.04.025.
Danandeh Mehr A, Kahya E and Yerdelen C 2014 Linear genetic programming application for successive-station monthly streamflow prediction; Comput. Geosci.-Uk. 70 63–72, https://doi.org/10.1016/j.cageo.2014.04.015.
Dogan S, Berktay A and Singh V P 2012 Comparison of multi-monthly rainfall-based drought severity indices, with application to semi-arid Konya closed basin, Turkey; J. Hydrol. 470–471 255–268, https://doi.org/10.1016/j.jhydrol.2012.09.003, https://doi.org/10.1016/j.wace.2016.11.005.
Edwards D C and Mckee T B 1997 Characteristics of 20th century drought in the United States at multiple time scales; Atmospheric Science Paper No. 634. Climatology Report No. 97(2), http://ccc.atmos.colostate.edu/edwards.pdf
Escalante-Sandoval C and Nuñez-Garcia P 2017 Meteorological drought features in northern and northwestern parts of Mexico under different climate change scenarios; J. Arid Land 9(1) 65–75, https://doi.org/10.1007/s40333-016-0022-y
Guven A 2009 Linear genetic programming for time-series modeling of daily flow rate; J. Earth Syst. Sci. 118(2) 157–173, https://doi.org/10.1007/s12040-009-0022-9.
Han P, Wang P, Zhang S and Zhu D 2010 Drought forecasting based on the remote sensing data using ARIMA models; Math. Comput. Model 51 1398–1403, https://doi.org/10.1016/j.mcm.2009.10.031.
Hassanzadeh Y, Abdi Kordani A and Fakheri Fard A 2012 Drought forecasting using genetic algorithm and conjoined model of neural network-wavelet; Bimon. J. Water Wastewater 23(3) 48–59 (in Persian), http://www.wwjournal.ir/article_1936_en.html.
Jain V K, Pandey R P, Jain M K and Byun H R 2015 Comparison of drought indices for appraisal of drought characteristics in the Ken River Basin; Weather Climate Extremes 8 1–11, https://doi.org/10.1016/j.wace.2015.05.002.
Javanmard S., Emamhadi M., BodaghJamali J., Didehvaras A. 2017 Spatial-temporal analysis of drought in Iran using SPI during a long-term period; Earth Sciences 6(2) 15–29. https://doi.org/10.11648/j.earth.20170602.12
Khalili K, Tahoudi M N, Mirabbasi R and Ahmadi F 2016 Investigation of spatial and temporal variability of precipitation in Iran over the last half century; Stoch. Env. Res. Risk A 30(4) 1205–1221, https://doi.org/10.1007/s00477-015-1095-4.
Krause P, Boyle D P and Base F 2005 Comparison of different efficiency criteria for hydrological model assessment; Adv. Geosci. 5 89–97, https://doi.org/10.5194/adgeo-5-89-2005.
Mahsin M, Yesmin A and Monira B 2012 Modeling rainfall in Dhaka division of Bangladesh using time series analysis; J. Math. Model. Appl. 1(5) 67–73, http://proxy.furb.br/ojs/index.php/modelling/article/view/2331.
Maity R, Suman M and Verma N K 2016 Drought prediction using a wavelet based approach to model the temporal consequences of different types of droughts; J. Hydrol. 539 417–428, https://doi.org/10.1016/j.jhydrol.2016.05.042.
Makkeasorn A, Chang N B and Zhou X 2008 Short-term streamflow forecasting with global climate change implications – A comparative study between genetic programming and neural network models; J. Hydrol. 352 336–354, https://doi.org/10.1016/j.jhydrol.2008.01.023.
Marco J B, Harboe R and Salas J D (eds) 2012 Stochastic hydrology and its use in water resources systems simulation and optimization, Vol. 237, Springer Science & Business Media, Netherlands, p. 473, https://doi.org/10.1007/978-94-011-1697-8.
Maybank J, Bonsai B, Jones K, Lawford R, O’brien E G, Ripley E A and Wheaton E 1995 Drought as a natural disaster; Atmos. Ocean 33(2) 195–222, https://doi.org/10.1080/07055900.1995.9649532.
McCuen R H 1989 Hydrologic analysis and design; Prentice Hall, Inc., Englewood cliffs, New Jersey.
McKee T, Doesken N and Kleist J 1993 The relationship of drought frequency and duration to time scales; In: Proceedings of the 8th, Boston, pp. 179–184, citeulike-article-id:14027580.
Meher J and Jha M 2013 Time-series analysis of monthly rainfall data for the Mahanadi River Basin, India; Sci. Cold Arid Regions 5(1) 0073–0084, https://doi.org/10.3724/SP.J.1226.2013.00073
Modarres R 2007 Streamflow drought time series forecasting; Stoch. Environ. Res. Risk A 21 223–233, https://doi.org/10.1007/s00477-006-0058-1.
Momani M and Naill P E 2009 Time series analysis model for rainfall data in Jordan: Case study for using time series analysis; Am. J. Environ. Sci. 5(5) 599–604, https://doi.org/10.3844/ajessp.2009.599.604.
Morid S, Smakhtin V and Moghaddasi M 2006 Comparison of seven meteorological indices for drought monitoring in Iran; Int. J. Climatol. 26 971–985, https://doi.org/10.1002/joc.1264.
Osmani L 2009 SPI application for investigating of drought frequency, intensity and extent in northwest of Iran; In: The second national conference on drought effects/management (DEM), Agricultural and Natural Resources, Research Center, Isfahan, Iran, pp. 20–21, May, 2009 (in Persian).
Parsafar N and Maroufi S 2009 Meteorological drought indices efficiency in drought risk management of Orumiyeh area; In: Iranian national conference on water crisis in agriculture and natural resources, Azad Islamic University of Shahre Rey, Iran, 4 November 2009. In Persian.
Paulo A A, Ferreira E, Coelho C and Pereira L S 2005 Drought class transition analysis through Markov and loglinear models, an approach to early warning; Agric. Water Manag. 77(1–3) 59–81, https://doi.org/10.1016/j.agwat.2004.09.039.
Rajurkara M, Kothyarib U and Chaube U 2004 Modeling of the daily rainfall-runoff relationship with artificial neural network; J. Hydrol. 285 96–113, https://doi.org/10.1016/j.jhydrol.2003.08.011.
Saada N 2014 Time series modeling of monthly rainfall in arid areas: Case study for Saudi Arabia; Am. J. Environ. Sci. 10(3) 277, https://doi.org/10.3844/ajessp.2014.277.282.
Salahi B., Faridpour M. 2016 Spatial analysis of climatic drought in North West of Iran using spatial autocorrelation statistics. Jsaeh 3(3) 1–20, http://jsaeh.khu.ac.ir/article-1-2617-en.html
Salas J D, Delleur J W, Yevjevich V and Lane W L 1980 Applied modeling of hydrologic time series; Water Resource Publications, Littleton, CO, USA, 484 Papers.
Shao Q, Wong H, Li M and Ip W C 2009 Streamflow forecasting using functional-coefficient time series model with periodic variation; J. Hydrol. 368(1–4) 88–95, https://doi.org/10.1016/j.jhydrol.2009.01.029.
Smakhtin V U and Hughes D A 2007 Automated estimation and analyses of meteorological drought characteristics from monthly rainfall data; Environ. Model. Softw. 22(6) 880–890, https://doi.org/10.1016/j.envsoft.2006.05.013.
Suryabhagavan K V 2017 GIS-based climate variability and drought characterization in Ethiopia over three decades; Weather Clim. Extrem. 15 11–23.
Wei W S W 2006 Time series analysis – univariate and multivariate methods; (2nd edn), Pearson publication, USA, p. 614, https://doi.org/10.1093/oxfordhb/9780199934898.013.0022.
Wu H, Hayes M J, Weiss A and Hu Q I 2001 An evaluation of the standardized precipitation index, the China-Z Index and the statistical Z-score; Int. J. Climatol. 21 745–758, https://doi.org/10.1002/joc.658.
Zahedi M, Sarisarraf B and Jame’Ee J 2006 Rain modeling in Tabriz and Oroumiyeh stations; J. f. Geography. Reg. Dev. 4(7) 1–16, https://doi.org/10.22067/geography.v4i7.4164A.