Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone

The objective of this paper is to present a model to estimate actual evapotranspiration ETA from reference evapotranspiration ET0 by numerical modelling of water flow in the unsaturated zone of the soil. Water flow is described by the highly non-linear Richards equation with a sink term representing...

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Detalles Bibliográficos
Autores principales:	Guarracino, Luis, Cesanelli, Andrés
Formato:	Objeto de conferencia
Lenguaje:	Inglés
Publicado:	2007
Materias:	Geofísica Recursos Hídricos evapotranspiración Aguas Subterráneas zona no saturada
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/26558
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-26558
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Geofísica Recursos Hídricos evapotranspiración Aguas Subterráneas zona no saturada
spellingShingle	Geofísica Recursos Hídricos evapotranspiración Aguas Subterráneas zona no saturada Guarracino, Luis Cesanelli, Andrés Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone
topic_facet	Geofísica Recursos Hídricos evapotranspiración Aguas Subterráneas zona no saturada
description	The objective of this paper is to present a model to estimate actual evapotranspiration ETA from reference evapotranspiration ET0 by numerical modelling of water flow in the unsaturated zone of the soil. Water flow is described by the highly non-linear 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. Richards equation is solved in a one-dimensional domain using a mixed finite element method. The values of ETA are obtained by applying a water stress factor to ET0 to account for soil moisture changes during simulation period. The proposed numerical model is used to estimate ETA 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	Objeto de conferencia Objeto de conferencia
author	Guarracino, Luis Cesanelli, Andrés
author_facet	Guarracino, Luis Cesanelli, Andrés
author_sort	Guarracino, Luis
title	Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone
title_short	Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone
title_full	Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone
title_fullStr	Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone
title_full_unstemmed	Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone
title_sort	estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone
publishDate	2007
url	http://sedici.unlp.edu.ar/handle/10915/26558
work_keys_str_mv	AT guarracinoluis estimationofactualevapotranspirationbynumericalmodellingofwaterflowintheunsaturatedzone AT cesanelliandres estimationofactualevapotranspirationbynumericalmodellingofwaterflowintheunsaturatedzone
bdutipo_str	Repositorios
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Estimation of actual evapotranspiration by numerical modelling of water flow in the unsaturated zone

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