Estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in Buenos Aires, Argentina
A method is presented to estimate actual evapotranspiration (ET<sub>A</sub>) from potential evapotranspiration (ET<sub>P</sub>) by numerical modeling of water flow in the unsaturated zone. Water flow is described by the Richards equation with a sink term representing the root...
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Formato: | Articulo |
Lenguaje: | Inglés |
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2009
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/131753 |
Aporte de: |
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I19-R120-10915-131753 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Astronomía Evapotranspiration Unsaturated zone Numerical modeling Argentina |
spellingShingle |
Astronomía Evapotranspiration Unsaturated zone Numerical modeling Argentina Cesanelli, Andrés Guarracino, Luis Estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in Buenos Aires, Argentina |
topic_facet |
Astronomía Evapotranspiration Unsaturated zone Numerical modeling Argentina |
description |
A method is presented to estimate actual evapotranspiration (ET<sub>A</sub>) from potential evapotranspiration (ET<sub>P</sub>) by numerical modeling of water flow in the unsaturated zone. Water flow is described by the Richards equation with a sink term representing the root water uptake. Evaporation is included in the model as a Neumann boundary condition at the soil surface. The Richards equation is solved in a one-dimensional domain using a mixed finite element method. The values of ET<sub>A</sub> are obtained by applying a water stress factor to ET<sub>P</sub> to account for soil moisture changes during the simulation period. The proposed numerical model is used to estimate ET<sub>A</sub> in an experimental plot located in a flatland area in Buenos Aires (Argentina). Numerical results show that the proposed model is a useful tool for evaluating evapotranspiration under different scenarios. |
format |
Articulo Articulo |
author |
Cesanelli, Andrés Guarracino, Luis |
author_facet |
Cesanelli, Andrés Guarracino, Luis |
author_sort |
Cesanelli, Andrés |
title |
Estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in Buenos Aires, Argentina |
title_short |
Estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in Buenos Aires, Argentina |
title_full |
Estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in Buenos Aires, Argentina |
title_fullStr |
Estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in Buenos Aires, Argentina |
title_full_unstemmed |
Estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in Buenos Aires, Argentina |
title_sort |
estimation of actual evapotranspiration by numerical modeling of water flow in the unsaturated zone: a case study in buenos aires, argentina |
publishDate |
2009 |
url |
http://sedici.unlp.edu.ar/handle/10915/131753 |
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Repositorios |
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