مقایسه نمایه‌های بارش در حال حاضر و آینده تحت تاثیر تغییراقلیم

Climate change causes an increase in greenhouse gases and changes in the hydrological cycle. Meteorological data and the results of the climate change simulation model show that the average temperature of the atmosphere is increasing, which causes a decrease in the amount of summer precipitation and an increase in the probability and severity of droughts and waves. It is especially hot in dry and semi-dry areas. Climate changes can be studied by examining the trend of average temperature and precipitation changes. In this research, the changes in the characteristics of precipitation limit profiles under the influence of climate change in the sixth report using the CMIP6 series model under three optimistic, medium and pessimistic scenarios for two periods of the near future (2023-2060) and the far future (2061-2100) was studied. In this research, in order to investigate the trends of precipitation profiles of the Sefid Rood watershed (18 stations) in the future period, the precipitation data of the scenarios (SSP126, SSP245, SSP585) in the two periods of 2023-2060 and 2061-2100 were used. became. Using the R-Climdex software in the R software environment, precipitation limit profiles (9 profiles) were determined for different scenarios and periods. According to the results, it can be said that due to the fact that the occurrence of extreme meteorological events, including precipitation, is one of the main issues in the field of water resources, agriculture and natural hazards, planning for the future should be done.