干旱区生态环境知识资源中心(Arid): Evaluation of the Hyper-Resolution Model-Derived Water Cycle Components Over the Upper Blue Nile Basin

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DOI	10.1016/j.jhydrol.2020.125231
	Evaluation of the Hyper-Resolution Model-Derived Water Cycle Components Over the Upper Blue Nile Basin
	Lazin, Rehenuma; Shen, Xinyi; Koukoula, Marika; Anagnostou, Emmanouil
通讯作者	Shen, XY (corresponding author), Univ Connecticut, Dept Civil & Environm Engn, Storrs, CT 06269 USA.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	590
英文摘要	Freshwater scarcity is a major global concern that is being exacerbated by the increasing population and changing climate. While close estimates of water cycle components and water budget analysis can help with planning for sustainable water resources management, limited hydroclimatic data have made such analysis challenging. The Upper Blue Nile basin in Ethiopia is such a hydroclimatic data-scarce region, with relatively arid and hot weather. Multiple studies have focused on water budget analysis in the UBN basin, but water cycle analyses are missing at high spatiotemporal resolution yield from a fully distributed hydrological model that closes water and energy budgets. In this paper, we describe the simulation of evapotranspiration (ET) and discharge at fine spatiotemporal resolution (500 m and 3 hourly) from 1979 to 2014, using the Coupled Routing and Excess STorage Soil-Vegetation-Atmosphere-Snow (CREST- SVAS) distributed hydrological model, which physically maintains water and energy balance. We also present a comparison of ET and discharge as derived from CREST with those simulated by other existing global models. Our results show that, where the global models perform well for specific hydrological components, ET, and discharge, CREST can simulate ET at 500 m resolution with 0.93 correlation coefficient, 0.81 Nash-Sutcliffe efficiency (NSE), and -4.75% bias (for daily scale) and discharge at different basin scales with NSE values ranging from 0.46 to 0.75. We performed cascade calibration for discharge and tested the optimized parameters on noncalibrated sites. The good model performance at the noncalibrated sites (NSE > 0.6; bias within 15%) indicated the calibrated parameters can be used for ungauged locations. Finally, the terrestrial water storage change (TWSC) from CREST was also consistent with reference data and the Gravity Recovery and Climate Experiment (GRACE). The hyper-resolution accurate hydrological components from CREST will enable effective prediction of water budget, helpful for initiating local and large-scale sustainable development plans that address social and policy requirements, as well as extreme climatic conditions.
英文关键词	Hydrological model CREST-SVAS Upper Blue Nile Ethiopia Water budget Evapotranspiration
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000599754500033
WOS关键词	CLIMATE-CHANGE IMPACTS ; RIVER-BASIN ; HYDROLOGICAL MODELS ; LAND EVAPORATION ; GILGEL ABAY ; LAKE TANA ; SATELLITE ; PRECIPITATION ; CATCHMENT ; BALANCE
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369167
作者单位	[Lazin, Rehenuma; Shen, Xinyi; Koukoula, Marika; Anagnostou, Emmanouil] Univ Connecticut, Dept Civil & Environm Engn, Storrs, CT 06269 USA; [Lazin, Rehenuma] 159 Discovery Dr,IPB 212, Storrs, CT 06269 USA
推荐引用方式 GB/T 7714	Lazin, Rehenuma,Shen, Xinyi,Koukoula, Marika,et al. Evaluation of the Hyper-Resolution Model-Derived Water Cycle Components Over the Upper Blue Nile Basin[J],2020,590.
APA	Lazin, Rehenuma,Shen, Xinyi,Koukoula, Marika,&Anagnostou, Emmanouil.(2020).Evaluation of the Hyper-Resolution Model-Derived Water Cycle Components Over the Upper Blue Nile Basin.JOURNAL OF HYDROLOGY,590.
MLA	Lazin, Rehenuma,et al."Evaluation of the Hyper-Resolution Model-Derived Water Cycle Components Over the Upper Blue Nile Basin".JOURNAL OF HYDROLOGY 590(2020).