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Estimation of actual evapotranspiration in barley crop through a generalized linear model
Adán Faramiñan1, Paula Olivera Rodriguez1, Facundo Carmona1
1Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Hidrología de Llanuras "Dr. Eduardo J. Usunoff" (IHLLA), Rep. Italia 780, B7300, Azul, Argentina.
Abstract:
Evapotranspiration is a key variable of the water cycle. Its calculation requires several ground data that frequently are not available. This study contains a detailed method and measurements of meteorological and energy balance variables that can be used to estimate the daily actual evapotranspiration (ETa). A linear generalized model is obtained to calculate the ETa from common variables measured in meteorological stations. The method showed a good performance over a barley crop of easthern Argentine Pampas and can be applied and tested in other great plains. Measurements of soil-plant-atmosphere are included The routines to reproduce the method are included The generalized method allows the calculation of daily ETa over crops and was tested over barley crops.
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