Allen R, Smith M, Pereira L, Perrier A (1994) An update for the calculation of reference evapotranspiration. ICID Bulletin 43(2):35-92
Ashouri H, Hsu KL, Sorooshian S, Braithwaite DK, Knapp K R, Cecil LD, Prat O P (2015) PERSIANN-CDR: Daily precipitation climate data record from multisatellite observations for hydrological and climate studies. Bulletin of the American Meteorological Society 96(1):69-83
Awange JL, Schumacher M, Forootan E, Heck B (2016) Exploring hydro-meteorological drought patterns over the Greater Horn of Africa (1979–2014) using remote sensing and reanalysis products. Advances in Water Resources 94:45-59
Bai J, Yuan Y, Di L (2017) Comparison between TVDI and CWSI for drought monitoring in the Guanzhong Plain, China. Journal of Integrative Agriculture 16(2):389-397
Bayissa Y, Tadesse T, Demisse G, Shiferaw A (2017) Evaluation of satellite-based rainfall estimates and application to monitor meteorological drought for the Upper Blue Nile Basin, Ethiopia. Remote Sensing 9(7):669
Byzedi M (2018) Evaluation of drought in western synoptic stations using herbst and neuro-fuzzy method. Iran-Water Resources Research 14(1):278-284 (In Persian)
Chao N, Luo Z, Wang Z, Jin T (2017) Retrieving groundwater depletion and drought in the tigris-euphrates basin between 2003 and 2015. Groundwater 1-13
Chao N, Wang Z, Jiang W, Chao D (2016) A quantitative approach for hydrological drought characterization in southwestern China using GRACE. Hydrogeology Journal 24(4):893-903
Dezfuli AK, Karamouz M, Araghinejad S (2010) On the relationship of regional meteorological drought with SOI and NAO over southwest Iran. Theoretical and Applied Climatology 100(1-2):57-66
Eicker A, Schumacher M, Kusche J, Döll P, Schmied HM (2014) Calibration/data assimilation approach for integrating GRACE data into the WaterGAP Global Hydrology Model (WGHM) using an ensemble Kalman filter: first results. Surveys in Geophysics 35(6):1285-1309
Farokhnia A, Morid S (2014) Assessment of GRACE and GLDAS capabilities for estimation of water balance in large scale areas, a case study of urmia lake watershed. Iran-Water Resources Research 10(1):51-62 (In Persian)
Frenken K (2009) Irrigation in the Middle East region in figures AQUASTAT Survey-2008. Water Reports (34)
Hamed KH, Rao AR (1998) A modified Mann-Kendall trend test for autocorrelated data. Journal of Hydrology 204(1-4):182-196
Hao Z, AghaKouchak A, Nakhjiri N, Farahmand A (2014) Global integrated drought monitoring and prediction system. Scientific Data 1:140001
Harris I, Jones P, Osborn T, Lister D (2014) Updated high‐resolution grids of monthly climatic observations–the CRU TS3. 10 Dataset. International Journal of Climatology 34(3):623-642
Hashemi Sheikhshabani SA, Morid S, Delavar M (2016) Linking drought monitoring systems to management actions. Iran-Water Resources Research 12(1):29-39 (In Persian)
Hosseini-Moghari SM, Araghinejad S (2015) Monthly and seasonal drought forecasting using statistical neural networks. Environmental Earth Sciences 74(1):397-412
Hosseini-Moghari SM, Araghinejad S, Ebrahimi K (2018) Spatio-temporal evaluation of global gridded precipitation datasets across Iran. Hydrological Science Journal 1-20
McKee TB, Doesken NJ, Kleist J (1993) The relationship of drought frequency and duration to time scales. In: Proc. of the 8th Conference on Applied Climatology, 17 January, Boston, USA 179-183
Mishra AK, Desai VR (2006) Drought forecasting using feed-forward recursive neural network. Ecological Modelling 198(1-2):127-138
Missling KD, Daedelow H, Maass H, Richter J, Schlage J (2005) Multimission raw data center for GRACE. Acta Astronautica 56(1-2):331-335
Sakumura C, Bettadpur S, Bruinsma S (2014) Ensemble prediction and intercomparison analysis of GRACE time‐variable gravity field models. Geophysical Research Letters 41(5):1389-1397
Save H, Bettadpur S, Tapley BD (2016) High‐resolution CSR GRACE RL05 mascons. Journal of Geophysical Research: Solid Earth 121(10):7547-7569
Scanlon BR, Zhang Z, Save H, Wiese DN, Landerer FW, Long D, Chen J (2016) Global evaluation of new GRACE mascon products for hydrologic applications. Water Resources Research 52(12):9412-9429
Schneider U, Becker A, Finger P, Meyer-Christoffer A, Rudolf BZ (2015) GPCC full data reanalysis version 7.0 at 0.5: monthly land-surface precipitation from rain-gauges built on GTS-based and historic data. Computational and Information System Lab, DOI: 10.5065/D6000072
Shean M (2008) Iran: 2008/09 wheat production declines due to drought. United States Department of Agriculture, Foreign Agricultural Service
Stagge JH, Tallaksen LM, Gudmundsson L, Van Loon AF, Stahl K (2015) Candidate distributions for climatological drought indices (SPI and SPEI). International Journal of Climatology 35(13):4027-4040
Sun Z, Zhu X, Pan Y, Zhang J, Liu X (2018) Drought evaluation using the GRACE terrestrial water storage deficit over the Yangtze River Basin, China. Science of The Total Environment 634:727-738
Tapley BD, Bettadpur S, Watkins M, Reigber C (2004) The gravity recovery and climate experiment: Mission overview and early results. Geophysical Research Letters 31(9):1-4
Thomas AC, Reager JT, Famiglietti JS, Rodell M (2014) A GRACE‐based water storage deficit approach for hydrological drought characterization. Geophysical Research Letters 41(5):1537-1545
Vicente-Serrano SM, Beguería S, López-Moreno JI (2010) A multiscalar drought index sensitive to global warming: the standardized precipitation evapotranspiration index. Journal of Climate 23(7):1696-1718
Wilhite DA, Svoboda MD, Hayes MJ (2007) Understanding the complex impacts of drought: a key to enhancing drought mitigation and preparedness. Water Resources Management 21(5):763-774
Willmott C, Matsuura K (2001) Terrestrial air temperature and precipitation: Monthly and annual time series (1950–1999)(Version 1.02). Center for Climatic Research Department of Geography University of Delaware Newark
Xie H, Longuevergne L, Ringler C, Scanlon B, (2012) Calibration and evaluation of a semi-distributed watershed model of Sub-Saharan Africa using GRACE data. Hydrology and Earth System Sciences 16(9):3083-3099
Yi H, Wen L (2016) Satellite gravity measurement monitoring terrestrial water storage change and drought in the continental United States. Scientific Reports 6:19909
Zhao M, Velicogna I, Kimball JS (2017) Satellite observations of regional drought severity in the continental United States using GRACE-based terrestrial water storage changes. Journal of Climate 30(16):6297-6308