[1] Zhang H, Wang L. Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China. Scientific Reports. 2021;11(1):8607.
[2] Onyutha C, Acayo G, Nyende J. Analyses of precipitation and evapotranspiration changes across the Lake Kyoga Basin in east Africa. Water. 2020;12(4):1134.
[3] Sonali P, Kumar DN. Review of trend detection methods and their application to detect temperature changes in India. Journal of Hydrology. 2013;476:212-27.
[4] Obada E, Alamou EA, Chabi A, Zandagba J, Afouda A. Trends and changes in recent and future Penman-Monteith potential evapotranspiration in Benin (West Africa). Hydrology. 2017;4(3):38.
[5] Chaouche K, Neppel L, Dieulin C, Pujol N, Ladouche B, Martin E, et al. Analyses of precipitation, temperature and evapotranspiration in a French Mediterranean region in the context of climate change. Comptes Rendus Geoscience. 2010;342(3):234-43.
[6] Rahman MM, Imam MH, Roy S, Hoque F, Ahsan U. Analysis of long-term rainfall trends in Bangladesh. 2021.
[7] Shadmani M, Marofi S, Roknian M. Trend analysis in reference evapotranspiration using Mann-Kendall and Spearman’s Rho tests in arid regions of Iran. Water resources management. 2012;26:211-24.
[8] Khanmohammadi N, Rezaie H, Montaseri M, Behmanesh J. The effect of different meteorological parameters on the temporal variations of reference evapotranspiration. Environmental Earth Sciences. 2017;76:1-13.
[9] Zhang Q, Liu C, Xu C-y, Xu Y, Jiang T. Observed trends of annual maximum water level and streamflow during past 130 years in the Yangtze River basin, China. Journal of hydrology. 2006;324(1-4):255-65.
[10] Chen H, Guo S, Xu C-y, Singh VP. Historical temporal trends of hydro-climatic variables and runoff response to climate variability and their relevance in water resource management in the Hanjiang basin. Journal of hydrology. 2007;344(3-4):171-84.
[11] Sluiter R. Interpolation methods for climate data: literature review. KNMI intern rapport, Royal Netherlands Meteorological Institute, De Bilt. 2009.
[12] Antal A, Guerreiro PM, Cheval S. Comparison of spatial interpolation methods for estimating the precipitation distribution in Portugal. Theoretical and Applied Climatology. 2021;145(3-4):1193-206.
[13] Ly S, Charles C, Degre A. Geostatistical interpolation of daily rainfall at catchment scale: the use of several variogram models in the Ourthe and Ambleve catchments, Belgium. Hydrology and Earth System Sciences. 2011;15(7):2259-74.
[14] Ahmad I, Tang D, Wang T, Wang M, Wagan B. Precipitation trends over time using Mann-Kendall and spearman’s rho tests in swat river basin, Pakistan. Advances in Meteorology. 2015;2015.
[15] Mohammed K, Karim T. MODELS TO PREDICT SLOPE LENGTH FROM OTHER WATERSHED ATTRIBUTES. Iraqi Journal of Agricultural Sciences. 2020;51(4).
[16] Keya DR, Karim TH. MULTIVARIATE MODELS FOR PREDICTING RAINFALL EROSIVITY FROM ANNUAL RAINFALL AND GEOGRAPHICAL COORDINATES IN A REGION WITH A NON-UNIFORM PLUVIAL REGIME. Iraqi Journal of Agricultural Sciences. 2020;51(5).
[17] Mahmood R, Jia S, Zhu W. Analysis of climate variability, trends, and prediction in the most active parts of the Lake Chad basin, Africa. Scientific Reports. 2019;9(1):6317.
[18] UNESCO. Aridity definition (UN documents). United Nation Educational Scientific and Cultural Organization, New York. 1979.
[19] Rao AR, Hamed KH, Chen H-L. Nonstationarities in hydrologic and environmental time series: Springer Science & Business Media; 2003.
[20] Allen RG, Pereira LS, Raes D, Smith M. Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56. Fao, Rome. 1998;300(9):D05109.
[21] Chen Y, Li J, Chen A. Does high risk mean high loss: Evidence from flood disaster in southern China. Science of the total environment. 2021;785:147127.
[22] Wilding L, editor Spatial variability: its documentation, accomodation and implication to soil surveys. Soil spatial variability, Las Vegas NV, 30 November-1 December 1984; 1985.
[23] Zakaria S, Al-Ansari N, Knutsson S, Al-Badrany T. ARIMA Models for weekly rainfall in the semi-arid Sinjar District at Iraq. Journal of Earth Sciences and Geotechnical Engineering. 2012;2(3).
[24] Elzeiny R, Khadr M, Zahran S, Rashwan E. Homogeneity analysis of rainfall series in the upper blue nile river basin, Ethiopia. Journal of Engineering Research. 2019;3(September):46-53.
[25] AL-Lami AM, AL-Timimi YK, AL-Salihi AM. The homogeneity analysis of rainfall time series for selected meteorological stations in Iraq. Diyala Journal for Pure Science. 2014;10(2):60-77.
[26] Govay MB, Karim TH. Rainfall time series in a semiarid region of Duhok Governorate, Iraqi Kurdistan Region. Iraqi Journal of Agricultural Sciences. 2022;IJASVol.56,( (1), 2025).
[27] Luo W, Taylor M, Parker S. A comparison of spatial interpolation methods to estimate continuous wind speed surfaces using irregularly distributed data from England and Wales. International Journal of Climatology: A Journal of the Royal Meteorological Society. 2008;28(7):947-59.
[28] Gong L, Xu C-y, Chen D. Spatial interpolation and analyses of reference evapotranspiration and its temporal trends in Changjiang (Yangtze River) Catchment, China. 2005.