Assessment of Climate Change Impacts on Runoff of Kerdeh Dam Watershed

Salimi Rad, Halime (2019) Assessment of Climate Change Impacts on Runoff of Kerdeh Dam Watershed. Masters thesis, university of zabol.

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Abstract

Hydrology cycles in the river basin and available water resources in arid and semi-arid regions of the world are heavily influenced by climate change and excessive greenhouse gas emissions. In recent years, the rise in temperature due to the excessive emission of greenhouse gases has caused an abnormality in the global climate system. The purpose of this study was to investigate the effect of climate change on the outflow runoff of Kardeh watershed located in Khorasan Razavi province. To this end, the SWAT distribution model has been used to assess the effect of climate change on the hydrology of the Kardeh In this regard, .watershed. This model is sensitive to land, weather and weather changes firstly, the SWAT Distributed Rain-Runoff Continuous Model was calibrated and validated for the period 1995-2015. In the following, the outcomes of the CIMP5 GCMS ti assess under three scenarios of RCP8.5, RCP4.5 ,RCP 2.6 were used the impacts of climate change on the runoff of the basin. In fact, to evaluate the impocts of climate change and global warming on basin hydrology, two parameters of precipitation and Temperature were used as the most important climatic parameters in three hydrant stations, Marcas and Ordak Band Sarvj. By introducing micro-scale climatic data by redrawing the SWAT model, the runoff outflow changes in the basin were simulated during the two 30-year periods of 2016- 2045 and 2046-2075. The simulation results showed that, in addition to increasing the average minimum temperature and the maximum average rainfall, the increase will also increase in the future. In general, runoff increase has been affected by two climatological models of IPSL and GFDL in most months and in three models NORESM1, HADGEM, MIROC in winter and spring (November to late May) and in other seasons the amount of runoff decreases. In general, it can be stated that the climatic models studied under different scenarios of release after the implementation of the SWAT model were able to predict the runoff variations in the future period for the study basin. This study provides an overview of the water resources status in the region for use in water resource management projects.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Temperature, rainfall, climatic changes, general circulation models, runoff.
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Depositing User: Mrs najmeh khajeh
Date Deposited: 23 Nov 2019 07:05
Last Modified: 23 Nov 2019 07:05
URI: http://eprints.uoz.ac.ir/id/eprint/2591

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