Modeling the hydrological behavior of basin affected by rainfall regime changes in the future (Case Study: Hoseenabad and Talango Basins, Kerman)

The impact of climate change on hydrology and water cycle in nature is very serious and a little knowledge of these effects to deal with its consequences. In order to model the two watersheds of Telangu and Hosseinabad in Kerman province,. Also, by using the LARS-WG model, variables were predicted for the period from 2021 to 2060. In the other part of this study, to run from the SWAT model, sensitivity analysis was performed using the global sensitivity analysis method using 29 parameters. The results showed that in general, the temperature has increased in the next period compared to the previous period in the whole month, in all three stations this increase was less in the warm months of the year than in the cold months. Precipitation has generally increased and the highest monthly precipitation increase for all three cases is April, March and March, respectively Sutcliffe (ENS) is greater than 0.65. The results of evaluating the effect of climate change on the discharge of the basin show that in general the discharge of the Telango Bam watershed has been much lower than the Hosseinabad Rain watershed in the current period and in the future. In the next 60 years, the discharge of the Telango Bam watershed will increase compared to the current period, the discharges of January, May and July will increase and will decrease in the other months except September, which is unchanged. The general results of the present research indicate that in the near future in dry ecosystems similar to the study area, following the change in the rainfall regime resulting from global warming, the hydrological behavior of the basins will change, especially in the winter and spring seasons, and the occurrence of extreme rainfall and flood events in These seasons are more likely than before.