Estimate of the alpha parameter in an oat crop under rain‐fed conditions |
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Authors: | Facundo Carmona Raúl Rivas Vicente Caselles |
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Affiliation: | 1. Instituto de Hidrología de Llanuras Dr. Eduardo J. Usunoff, Universidad Nacional del Centro de la Provincia de Buenos Aires, , Tandil, 7000 Argentina;2. Departamento de Física de la Tierra y Termodinámica, Universidad de Valencia, , Burjassot, Valencia, 46100 Spain |
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Abstract: | In this article, we estimated the alpha parameter of the Priestley–Taylor model under rain‐fed conditions. This study was conducted in an oat crop, from 7 September to 22 October 2009, in a region of subhumid plains (Tandil, Argentina). An energy balance station was installed within the experimental field to monitor its development. The alpha parameter value obtained was 1.41 ± 0.01, which led to an overestimation of the evapotranspiration of just 2% and a relative error in estimating evapotranspiration of 8%. The results suggest that the alpha parameter obtained is adequate in estimating the evapotranspiration of oat crops or similar crops in subhumid plains of Buenos Aires, Argentina. Copyright © 2012 John Wiley & Sons, Ltd. |
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Keywords: | alpha parameter oat crop subhumid plains Priestley– Taylor model |
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