Flow Modelling in Great Karun Sub-basins in terms of Future Climate

Document Type : Research Article


1 M.Sc. in Watershed Management Science and Engineering, Shahrekord University, Shahrekord, Iran

2 Assistant Professor, Department of Rangeland and Watershed Management, Shahrekord University, Shahrekord, Iran

3 Associate Professor, Faculty of Agricultural Engineering and Technology, Tehran University, Tehran, Iran


Climate change affects runoff flow of the basin by changing in hydrological cycle parameters. Knowing the possible changes in the amount of precipitation and runoff of the basin will help to better planning and management of water resources. Precipitation changes due to climate change can be simulated using atmospheric general circulation models under different scenarios. Assessment of runoff needs using precipitation- runoff models. The aim of this research is flow modelling in some parts of the Great Karun Basin as a result of possible changes in future climate. For this purpose, temperature and precipitation changes of the Great Karun Basin are simulated for years 2011-2030 and 2046-2065 using two general circulation models and downscaling process under B1 and A2 scenarios. Then, the output flow of Andimeshk, Ahwaz and Yasouj sub-basins was predicted by IHACRES rainfall- runoff model and using precipitation and temperature data predicted under B1 and A2 scenarios. Compare revealed that, the amount of precipitation, maximum temperature and minimum temperature will increase in future periods under both scenarios. The results of flow simulation also show that the runoff of future periods under both scenarios will decrease in spring and summer and increase in autumn and winter in study area.


Main Subjects

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Volume 4, Issue 4
January 2018
Pages 1033-1047
  • Receive Date: 25 April 2017
  • Revise Date: 20 May 2017
  • Accept Date: 20 June 2017
  • First Publish Date: 22 December 2017