4.7 Article

Hydrological evaluation of open-access precipitation and air temperature datasets using SWAT in a poorly gauged basin in Ethiopia

期刊

JOURNAL OF HYDROLOGY
卷 569, 期 -, 页码 612-626

出版社

ELSEVIER
DOI: 10.1016/j.jhydrol.2018.12.026

关键词

Blue Nile; Climate Hazards Group InfraRed Precipitation with station data; Tropical Rainfall Measuring Mission; Climate Forecast System Reanalysis; SWAT; Satellite precipitation

资金

  1. National Basic Research Program of China [2015CB954102]
  2. Natural Science Foundation of Jiangsu Province of China [BK20150975]
  3. National Natural Science Foundation of China [41601413, 41431177, 41801036]
  4. PAPD [164320H116]
  5. Program of Innovative Research Team of Jiangsu Higher Education Institutions of China
  6. National Key Research and Development Program of China [2017YFE0100700, 2017YFB0503702]

向作者/读者索取更多资源

Precipitation and air temperature are key drivers of watershed models. Currently there are many open-access gridded precipitation and air temperature datasets at different spatial and temporal resolutions over global or quasi-global scale. Motivated by the scarcity and substantial temporal and spatial gaps in ground measurements in Africa, this study evaluated the performance of three open-access precipitation datasets (i.e. CHIRPS (Climate Hazards Group InfraRed Precipitation with Station data), TRMM (Tropical Rainfall Measuring Mission) and CFSR (Climate Forecast System Reanalysis)) and one air temperature dataset (CFSR) in driving Soil and Water Assessment Tool (SWAT) model in simulation of daily and monthly streamflow in the upper Gilgel Abay Basin, Ethiopia. The best available measurements of precipitation and air temperature from sparse gauge stations were also used to drive SWAT model and the results were compared with those using open-access datasets. After a comprehensive comparison of a total of eight model scenarios with different combinations of precipitation and air temperature inputs, we draw the following conclusions: (1) using measured precipitation from even sparse available stations consistently yielded better performance in streamflow simulation than using all three open-access precipitation datasets; (2) using CFSR air temperature yielded almost identical performance in streamflow simulation to using measured air temperature from gauge stations; (3) among the three open-access precipitation, overall CHIRPS yielded best performance. These results suggested that the CHIRPS precipitation available at high spatial resolution (0.05 degrees) together with CFSR air temperature can be a promising alternative open-access data source for streamflow simulation in this data-scarce area in the case of limited access to desirable gauge data.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据