DOI: 10.1016/j.jag.2016.10.004
Scopus记录号: 2-s2.0-85017442970
论文题名: Assessing reference evapotranspiration at regional scale based on remote sensing, weather forecast and GIS tools
作者: Ramírez-Cuesta J ; M ; , Cruz-Blanco M ; , Santos C ; , Lorite I ; J
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2017
卷: 55 起始页码: 32
结束页码: 42
语种: 英语
英文关键词: GIS
; Interpolation
; Reference evapotranspiration
; Remote sensing
; Weather forecast
; Weather stations
英文摘要: Reference evapotranspiration (ETo) is a key component in efficient water management, especially in arid and semi-arid environments. However, accurate ETo assessment at the regional scale is complicated by the limited number of weather stations and the strict requirements in terms of their location and surrounding physical conditions for the collection of valid weather data. In an attempt to overcome this limitation, new approaches based on the use of remote sensing techniques and weather forecast tools have been proposed. Use of the Land Surface Analysis Satellite Application Facility (LSA SAF) tool and Geographic Information Systems (GIS) have allowed the design and development of innovative approaches for ETo assessment, which are especially useful for areas lacking available weather data from weather stations. Thus, by identifying the best-performing interpolation approaches (such as the Thin Plate Splines, TPS) and by developing new approaches (such as the use of data from the most similar weather station, TS, or spatially distributed correction factors, CITS), errors as low as 1.1% were achieved for ETo assessment. Spatial and temporal analyses reveal that the generated errors were smaller during spring and summer as well as in homogenous topographic areas. The proposed approaches not only enabled accurate calculations of seasonal and daily ETo values, but also contributed to the development of a useful methodology for evaluating the optimum number of weather stations to be integrated into a weather station network and the appropriateness of their locations. In addition to ETo, other variables included in weather forecast datasets (such as temperature or rainfall) could be evaluated using the same innovative methodology proposed in this study. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79934
Appears in Collections: 气候变化事实与影响
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作者单位: IFAPA-Centro “Alameda del Obispo”, Regional Government of Andalusia, Avda. Menéndez Pidal s/n, P.O. Box 3092, Córdoba, Spain
Recommended Citation:
Ramírez-Cuesta J,M,, Cruz-Blanco M,et al. Assessing reference evapotranspiration at regional scale based on remote sensing, weather forecast and GIS tools[J]. International Journal of Applied Earth Observation and Geoinformation,2017-01-01,55