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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/4495

Title: Latent heat flux over Cabernet Sauvignon vineyard using the Shuttleworth and Wallace model
Authors: Ortega-Farias, S.O.
Carrasco, M.
Olioso, A.
Acevedo, C.
Poblete, C.
Issue Date: 2007
Publisher: Springer Berlin / Heidelberg
Citation: Irrigation Science 25 (2): 161-170
Abstract: The Shuttleworth and Wallace model (SW) was evaluated to estimate latent heat flux above a drip-irrigated Cabernet Sauvignon vineyard, located in the Pencahue Valley, Region del Maule, Chile (35°22′ LS; 71°47′ LW; 150 m above sea level). The performance of the WS model (LEws) was evaluated against the eddy-covariance method (LEed) on a 30 min time interval. Results indicate that the root mean square error (RMSE) and mean absolute error (MAE) were 29 W m−2 and 22 W m−2, respectively. For the vine evapotranspiration (ETv), RMSE was 0.42 mm day−1 and MAE was 0.36 mm day−1. The largest disagreements between LEed and LEws were observed under dry atmospheric conditions. Also, the sensitivity analysis indicates that predicted ETv by the SW model was sensitive to errors of ±30% in leaf area index and mean stomatal resistance, but it was not affected by errors in the estimation of aerodynamic resistances.
Description: Ortega-Farias, S.; Carrasco, M.; Olioso, A.; Acevedo, C. and Poblete,C. Centro de Investigación y Transferencia en Riego y Agroclimatologí­a (CITRA), Facultad de Ciencias Agrarias, Universidad de Talca, Casilla 747, Talca, Chile.
URI: http://dspace.utalca.cl/handle/1950/4495
ISSN: 0342-7188
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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