بررسي اثر تغيير اقليم بر زمان حداكثر جريان رواناب ناشي از ذوب برف (مطالعه موردي رودهاي كارون و دز به عنوان منابع اصلي آب كشاورزي شمال خوزستان)

The study of the effect of climate change on the peak time of snowmelt runoff

The effects of climate change on snowmelt runoff timing and changes in irrigation water progaramming in agriculture is very important in the rivers with snowmelt runoff regime. In this study, The peak time index of snowmelt runoff is calculated and Mankendal Test is applied to study the trend index and climate change GCM models (ECHAM4 model) is applied to study the effects of climate change on the peak time of snowmelt runoff with two scenarioes for next 100 years in karoon and Dez basins in the southwest of Iran . The main purpose of this research is determine the changes in the peak time of snowmelt runoff in karoon and dez rivers, for suitable progaramming in future. Research results showed that a shift is observed in the peak time of snowmelt runoff from spring to winter and this trend amount is 3 days in every decade.