Konya basin of Turkey is the least-precipitated region of Turkey and highly prone to impactsof climate change. The basin has also the highest groundwater irrigations with excessivewithdrawals. Therefore, the present study was conducted to determine the potential impactsof climate change on crop water requirements of different crops commonly cultivated overKonya Basin of Turkey. Long-term (1970-2000) temperature, precipitation, evaporation andrelative humidity data were used to evaluate the impacts of climate change and to generatefuture climate scenarios. RegCM4.3.5 regional climate model developed by The Abdus SalamInternational Centre for Theoretical Physics and RCP 4.5 and RCP 8.5 emission scenariosof global climate models of MPI-ESM-MR (Max Planck Meteorological Institute), HadGEM2-ES (Hadley Centre) and IPSL-CM5A-LR (French National Meteorology Center) were used tocreate future climate scenarios covering the period of 2015 - 2050. Performance of regionalclimate models for the period of 1970 – 2000 were controlled by using data set of ClimaticResearch Unit-CRU of East Anglia University and the best-fi tting model parameters weredetermined. CROPWAT 8 was employed in combination with created future climate scenarios.IRSIS was used to simulate yield response of the crops under defi cit irrigation conditions(75%, 50% and 25% of full irrigation). Recommendations were provided to mitigate thepossible impacts of future climate change on irrigation.
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