DOI: 10.5194/hess-21-3145-2017
Scopus记录号: 2-s2.0-85021658940
论文题名: Modeling the water budget of the Upper Blue Nile basin using the JGrass-NewAge model system and satellite data
作者: Abera W ; , Formetta G ; , Brocca L ; , Rigon R
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 6 起始页码: 3145
结束页码: 3165
语种: 英语
Scopus关键词: Budget control
; Decision making
; Developing countries
; Digital storage
; Evapotranspiration
; Geodetic satellites
; Satellites
; Water management
; Water resources
; Hydrological cycles
; Hydrometeorological data
; Informed decision
; Resource development
; Satellite products
; Spatial resolution
; Water budget analysis
; Waterresource management
; Information management
; decision making
; developing world
; GRACE
; hydrological cycle
; hydrological modeling
; hydrometeorology
; precipitation (climatology)
; remote sensing
; resource development
; resource management
; satellite data
; water budget
; water storage
; Blue Nile Basin
; Nile Basin
英文摘要: The Upper Blue Nile basin is one of the most datascarce regions in developing countries, and hence the hydrological information required for informed decision making in water resource management is limited. The hydrological complexity of the basin, tied with the lack of hydrometeorological data, means that most hydrological studies in the region are either restricted to small subbasins where there are relatively better hydrometeorological data available, or on the whole-basin scale but at very coarse timescales and spatial resolutions. In this study we develop a methodology that can improve the state of the art by using available, but sparse, hydrometeorological data and satellite products to obtain the estimates of all the components of the hydrological cycle (precipitation, evapotranspiration, discharge, and storage). To obtain the water-budget closure, we use the JGrass-NewAge system and various remote sensing products. The satellite product SM2R-CCI is used for obtaining the rainfall inputs, SAF EUMETSAT for cloud cover fraction for proper net radiation estimation, GLEAM for comparison with NewAge-estimated evapotranspiration, and GRACE gravimetry data for comparison of the total water storage amounts available in the whole basin. Results are obtained at daily time steps for the period 1994-2009 (16 years), and they can be used as a reference for any water resource development activities in the region. The overall water-budget analysis shows that precipitation of the basin is 1360-230mm per year. Evapotranspiration accounts for 56% of the annual water budget, runoff is 33 %, storage varies from 10 to C17% of the water budget. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79136
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy; Department of Geography and Environmental Studies, Mekelle University, Mekelle, Ethiopia; Centre for Ecology and Hydrology, Crowmarsh Gifford, Wallingford, United Kingdom; Research Institute for Geo-Hydrological Protection, National Research Council, Perugia, Italy
Recommended Citation:
Abera W,, Formetta G,, Brocca L,et al. Modeling the water budget of the Upper Blue Nile basin using the JGrass-NewAge model system and satellite data[J]. Hydrology and Earth System Sciences,2017-01-01,21(6)