Reference evapotranspiration based on class A pan evaporation
نویسندگان
چکیده
منابع مشابه
Estimated evapotranspiration of rice based on pan evaporation as a surrogate to lysimeter measurement
Reference crop evapotranspiration (ET o), used to determine actual crop evapotranspiration, is often estimated from pan evaporation (EP) data. However, uncertainties in the relationship between ET o and EP often result in unreliable estimate of crop evapotranspiration. This study investigated the relationship between measured and estimated crop evapotranspirations, ET m and ET e, respectively, ...
متن کاملClass A pan coefficients ( Kp ) to estimate daily reference evapotranspiration ( ETo )
The Class A pan coefficient (Kp) has been used to convert pan evaporation (ECA) to grass-reference evapotranspiration (ETo), an important component in water management of irrigated crops. There are several methods to determine Kp values, using wind speed, relative humidity and fetch length and conditions. This paper analyses the following methods to estimate Kp values: Doorenbos & Pruitt (1977)...
متن کاملDaily Pan Evaporation Estimation Using Artificial Neural Network-based Models
Accurate estimation of evaporation is important for design, planning and operation of water systems. In arid zones where water resources are scarce, the estimation of this loss becomes more interesting in the planning and management of irrigation practices. This paper investigates the ability of artificial neural networks (ANNs) technique to improve the accuracy of daily evaporation estimation....
متن کاملdaily pan evaporation estimation using artificial neural network-based models
accurate estimation of evaporation is important for design, planning and operation of water systems. in arid zones where water resources are scarce, the estimation of this loss becomes more interesting in the planning and management of irrigation practices. this paper investigates the ability of artificial neural networks (anns) technique to improve the accuracy of daily evaporation estimation....
متن کاملcomparsion of the fao penman-monteith method and class a evaporation pan with lysimeter data in estimating evapotranspiration (cicer arietinum l.) in khorramabad
lorestan and khorramabad province has major share in chickpea production region are the one of the largest producer of chickpea (cicer arietinum l.) in iran, chickpea with more cultivation area compare to the other plants, to estimate the chickpea water requirement. the aim of this research was to determine the crop coefficients of chickpea in a research field in lorestan agriculture faculty in...
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ژورنال
عنوان ژورنال: Scientia Agricola
سال: 2002
ISSN: 0103-9016
DOI: 10.1590/s0103-90162002000300001