Generating reference evapotranspiration surfaces from the Hargreaves equation at watershed scale
نویسندگان
چکیده
منابع مشابه
History and Evaluation of Hargreaves Evapotranspiration Equation
A brief history of development of the 1985 Hargreaves equation and its comparison to evapotranspiration ~ET! predicted by the Food and Agricultural Organization of the United Nations ~FAO! Penman-Monteith method are described to provide background and information helpful in selecting an appropriate reference ET equation under various data situations. Early efforts in irrigation water requiremen...
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متن کاملpredicting daily reference evapotranspiration in a humid region of china by the locally calibrated hargreaves-samani equation using weather forecast data
the hargreaves-samani (hs) equation, which estimates reference evapotranspiration (et0) using only temperature as input, should be most suitable for et0 prediction based on weather forecasting data. in the current study, the hs equation is calibrated with daily et0 by the penman-monteith equation, and is evaluated to check the possibility of predicting daily et0 based on weather forecast data. ...
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[1] The catchment water‐energy balance at the interannual scale remains a challenge for bridging the important gap in our knowledge of the hydrologic cycle. This study investigates interannual evapotranspiration (ET) variability and water‐energy balance at over 547 catchments across the contiguous United States in different climate zones. The investigation is based on ET data estimated from sat...
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Remote sensing can provide estimates of spatially distributed actual evapotranspiration (ET) at different spatial scales. Methods that combine remotely sensed observations with other ground-based information on land and atmospheric properties usually allow improved estimates of spatially distributed evapotranspiration (ET) than when remotely sensed data are used alone. Spatial resolution of rem...
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ژورنال
عنوان ژورنال: Hydrology and Earth System Sciences
سال: 2011
ISSN: 1607-7938
DOI: 10.5194/hess-15-2495-2011