Assessment of SDSM model performance to investigate the effect of climate change on precipitation and temperature

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hasirchian mehraveh; ZAHABIYOUN BAGHER; KHAZAEI MOHAMMAD REZA

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Journal: Journal of Irrigation and Water Engineering Year:2019 | Volume:9 | Issue:34 Page(s): 108-120

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Title

Assessment of SDSM model performance to investigate the effect of climate change on precipitation and temperature

Author(s)

hasirchian mehraveh | ZAHABIYOUN BAGHER | KHAZAEI MOHAMMAD REZA | Issue Writer Certificate

Keywords

Bashar river basinQ1

Climate ChangeQ2

Performance evaluationQ1

SDSM ModelQ1

Statistical downscalingQ2

Abstract

The Climate Change and global warming is one of the important environmental humanity issues. For Climate Change impacts assessment, GCM models are used. In order to use the GCM outputs in the catchment scale, downscaling is required. The SDSM are used to assess the Climate Change impacts studies extensively, while the scope of SDSM has been evaluatedless. In this research, performance of the SDSM investigated using precipitation, Tmax and Tmin data of Yasouj station, and NCEP large-scale atmospheric variables. Then Climate Change impats in 2067-93 period was assessed using CGCM3 outputs underA2 scenario. To assess the strengths and weaknesses points of SDSM, precise evaluation was performed at daily, monthly and annual levels. The results showed that the model performance on daily level is good, but not acceptable in annual maximum daily precipitation distributions; on monthly level and reproduction of annual precipitation distributions is acceptable at 90% confidence level; not acceptable on reproduction of annual temperature distributions. In assessing the Climate Change impacts, it was concluded that monthly mean of Tmax and Tmin in all months will increase relatively the same, the mean precipitation decrease in spring and increase in autumn. It is forecasted that increasing of mean annual precipitation and temperature are 52% and 2. 76 respectively

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APA: Copy

hasirchian, mehraveh, ZAHABIYOUN, BAGHER, & KHAZAEI, MOHAMMAD REZA. (2019). Assessment of SDSM model performance to investigate the effect of climate change on precipitation and temperature. IRANIAN OF IRRIGATION & WATER ENGINEERING, 9(34 ), 108-120. SID. https://sid.ir/paper/247093/en

Vancouver: Copy

hasirchian mehraveh, ZAHABIYOUN BAGHER, KHAZAEI MOHAMMAD REZA. Assessment of SDSM model performance to investigate the effect of climate change on precipitation and temperature. IRANIAN OF IRRIGATION & WATER ENGINEERING[Internet]. 2019;9(34 ):108-120. Available from: https://sid.ir/paper/247093/en

IEEE: Copy

mehraveh hasirchian, BAGHER ZAHABIYOUN, and MOHAMMAD REZA KHAZAEI, “Assessment of SDSM model performance to investigate the effect of climate change on precipitation and temperature,” IRANIAN OF IRRIGATION & WATER ENGINEERING, vol. 9, no. 34 , pp. 108–120, 2019, [Online]. Available: https://sid.ir/paper/247093/en

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