期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：6
页码：9704
DOI：10.15680/IJIRSET.2015.0506028
出版社：S&S Publications
摘要：This study meant to estimate the monthly, seasonal and annual water availability of the Weyib Riverbasin under CMIP5 climate change scenarios for three future time slices until year 2100. The SDSM was used togenerate future likely both temperatures and precipitation whereas the ArcSWAT model was used to generate futurewater availability in the basin. Results revealed that future predicted both temperatures, and precipitation revealed astatistically significant (at 5% significant level) increasing trend in the forthcoming periods as perceived by Mann-Kendall test. The annual mean daily total water availability revealed an increase, possibly, in the ranges 9.18-24.49%(RCP8.5), 3.98-20.40% (RCP4.5) and 11.82-12.68% (RCP2.6). In addition, annual potential evapotranspiration hasbeen shown a decrease by 13.31% (RCP8.5), 14.48% (RCP4.5) and 15.20% (RCP2.6). Results also revealed that adecrease of water availability in all months on the dry season this might cause water shortage in the lowland region,and greater increase of water availability in intermediate and rainy seasons this might cause flooding to some floodprone region of the basin.
关键词：CMIP5 climate change scenarios; SDSM-ArcSWAT model; Water availability; Weyib river basin;Southeastren Ethiopia.
