气候变化领域集成服务门户(CCPortal): Climate change impact on river flow extremes in the upper blue nile river basin

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DOI	10.2166/wcc.2018.154
	Climate change impact on river flow extremes in the upper blue nile river basin
	Meresa H.K.; Gatachew M.T.
发表日期	2019
ISSN	20402244
起始页码	759
结束页码	781
卷号	10 期号:4
英文摘要	This paper aims to study climate change impact on the hydrological extremes and projected precipitation extremes in far future (2071–2100) period in the Upper Blue Nile River basin (UBNRB). The changes in precipitation extremes were derived from the most recent AFROCORDEX climate data base projection scenarios compared to the reference period (1971–2000). The climate change impacts on the hydrological extremes were evaluated using three conceptual hydrological models: GR4 J, HBV, and HMETS; and two objective functions: NSE and LogNSE. These hydrological models are calibrated and validated in the periods 1971–2000 and 2001–2010, respectively. The results indicate that the wet/dry spell will significantly decrease/increase due to climate change in some sites of the region, while in others, there is increase/decrease in wet/dry spell but not significantly, respectively. The extreme river flow will be less attenuated and more variable in terms of magnitude, and more irregular in terms of seasonal occurrence than at present. Low flows are projected to increase most prominently for lowland sites, due to the combined effects of projected decreases in Belg and Bega precipitation, and projected increases in evapotranspiration that will reduce residual soil moisture in Bega and Belg seasons. © IWA Publishing 2019.
英文关键词	Blue Nile; Climate change; Hydrological extremes; Modeling
语种	英语
scopus关键词	Climate models; Models; Rivers; Soil moisture; Stream flow; Watersheds; Blue Nile; Blue Nile River Basin; Climate change impact; Combined effect; Hydrological extremes; Hydrological models; Objective functions; Precipitation extremes; Climate change; climate change; climate effect; extreme event; future prospect; hydrological modeling; precipitation assessment; river basin; river flow; Blue Nile Basin; Nile Basin; Hepatitis B virus
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147977
作者单位	Mekelle University (MU), Mekelle, Ethiopia; Addis Ababa University (AAU), Addis Ababa, Ethiopia
推荐引用方式 GB/T 7714	Meresa H.K.,Gatachew M.T.. Climate change impact on river flow extremes in the upper blue nile river basin[J],2019,10(4).
APA	Meresa H.K.,&Gatachew M.T..(2019).Climate change impact on river flow extremes in the upper blue nile river basin.Journal of Water and Climate Change,10(4).
MLA	Meresa H.K.,et al."Climate change impact on river flow extremes in the upper blue nile river basin".Journal of Water and Climate Change 10.4(2019).