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Titre du document / Document title

A comparison of four evapotranspiration models in a greenhouse environment

Auteur(s) / Author(s)

PRENGER J. J. (1) ; FYNN R. P. (2) ; HANSEN R. C. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Food, Agricultural, and Biological Engineering, Ohio Agricultural Research and Development Center, Ohio State University, Wooster, Ohio, ETATS-UNIS
(2) Color Spot Nurseries, Inc., Fallbrook, California, ETATS-UNIS

Résumé / Abstract

Advances in evapotranspiration modeling have led to a variety of formulas and terms used in irrigation control research. Four models that represent the progression from outdoor, big leaf estimates to indoor, greenhouse-specific formulations are compared in this article. Each of the models was algebraically reduced to common and consistent terms. The data from a lysimeter study were used to compare evapotranspiration combination models using evapotranspiration (ET) rates of a 'Red Sunset' Red Maple tree (Acer rubrum 'Red Sunset') grown in a controlled-environment greenhouse. The measured ET was compared with two empirical climatic factors (solar irradiance and vapor pressure deficit) and with calculated ET based on four evapotranspiration models: (1) Penman, (2) Penman-Monteith, (3) Stanghellini, and (4) Fynn. A measure of the model performance is given by the Nash-Sutcliffe R2, or model efficiency. The relationship between measured and calculated ET for the Stanghellini model was calculated to have a model efficiency of R2 = 0.872, while the other models yielded correlations of R2 = 0.214, R2 = 0.481, R2= -0.848 for Penman, Penman-Monteith, and Fynn, respectively. The differences between the models are discussed, revealing the importance of the leaf area index factor and a sub-model for irradiance in the plant canopy. Based on the coefficient of determination, vapor pressure deficit alone yielded a good linear correlation to measured ET (r2= 0.884), while solar irradiance alone resulted in r2 = 0.652.

Revue / Journal Title

Transactions of the ASAE    ISSN  0001-2351   CODEN TAAEAJ 

Source / Source

2002, vol. 45, no6, pp. 1779-1788 [10 page(s) (article)] (24 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Society of Agricultural Engineers, St. Joseph, MI, ETATS-UNIS  (1958-2005) (Revue)

Mots-clés anglais / English Keywords

Hardwood forest tree

;

Spermatophyta

;

Angiospermae

;

Dicotyledones

;

Aceraceae

;

Protected cultivation

;

Acer rubrum

;

Experimental study

;

Comparative study

;

Irradiance

;

Vapor pressure

;

Irrigation management

;

Simulation model

;

Modeling

;

Greenhouse

;

Evapotranspiration

;

Mots-clés français / French Keywords

Arbre forestier feuillu

;

Spermatophyta

;

Angiospermae

;

Dicotyledones

;

Aceraceae

;

Culture protégée

;

Acer rubrum

;

Etude expérimentale

;

Etude comparative

;

Eclairement énergétique

;

Pression vapeur

;

Pilotage irrigation

;

Modèle simulation

;

Modélisation

;

Serre

;

Evapotranspiration

;

Mots-clés espagnols / Spanish Keywords

Arbol forestal frondoso

;

Spermatophyta

;

Angiospermae

;

Dicotyledones

;

Aceraceae

;

Cultivo protegido(invernadero)

;

Acer rubrum

;

Estudio experimental

;

Estudio comparativo

;

Aclaramiento energético

;

Presión vapor

;

Gestión riego

;

Modelo simulación

;

Modelización

;

Invernadero

;

Evapotranspiración

;

Mots-clés d'auteur / Author Keywords

Transpiration

;

Combination models

;

Solar irradiance

;

Vapor pressure deficit

;

Acer rubrum

;

Localisation / Location

INIST-CNRS, Cote INIST : 2869, 35400010419316.0080

Nº notice refdoc (ud4) : 14564631



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