globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-19-3829-2015
Scopus记录号: 2-s2.0-84941339984
论文题名:
GlobWat - A global water balance model to assess water use in irrigated agriculture
作者: Hoogeveen J; , Faurès J; -M; , Peiser L; , Burke J; , Van De Giesen N
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期:9
起始页码: 3829
结束页码: 3844
语种: 英语
Scopus关键词: Agriculture ; Calibration ; Climate models ; Evaporation ; Soil moisture ; Calibration and validations ; Food and agriculture organizations ; Global information systems ; High resolution data ; Input and outputs ; Irrigated agriculture ; Soil water balance model ; Water balance models ; Water resources ; calibration ; data set ; evaporation ; Food and Agricultural Organization ; global perspective ; hydrological modeling ; irrigation system ; model validation ; renewable resource ; soil water ; water budget ; water resource ; water use efficiency
英文摘要: GlobWat is a freely distributed, global soil water balance model that is used by the Food and Agriculture Organization (FAO) to assess water use in irrigated agriculture, the main factor behind scarcity of freshwater in an increasing number of regions. The model is based on spatially distributed high-resolution data sets that are consistent at global level and calibrated against values for internal renewable water resources, as published in AQUASTAT, the FAO's global information system on water and agriculture. Validation of the model is done against mean annual river basin outflows.

The water balance is calculated in two steps: first a "vertical" water balance is calculated that includes evaporation from in situ rainfall ("green" water) and incremental evaporation from irrigated crops. In a second stage, a "horizontal" water balance is calculated to determine discharges from river (sub-)basins, taking into account incremental evaporation from irrigation, open water and wetlands ("blue" water). The paper describes the methodology, input and output data, calibration and validation of the model. The model results are finally compared with other global water balance models to assess levels of accuracy and validity. © Author(s) 2015.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78428
Appears in Collections:气候变化事实与影响

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作者单位: Food and Agriculture Organization of the United Nations, Rome, Italy; World Bank, Washington, DC, United States; Delft University of Technology, Delft, Netherlands

Recommended Citation:
Hoogeveen J,, Faurès J,-M,et al. GlobWat - A global water balance model to assess water use in irrigated agriculture[J]. Hydrology and Earth System Sciences,2015-01-01,19(9)
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