Calibration of alternative equations to estimate the reference évapotranspiration in Nova Venécia, Espírito Santo, Brazil

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dc.creatorGabriel Fornaciari
dc.creatorRodrigo Amaro de Salles
dc.creatorEvandro Chaves de Oliveira
dc.creatorMylena da Silva Gomes
dc.creatorEdinei José Armani Borghi
dc.creatorMarta Cristina Teixeira Leite
dc.creatorRamon Amaro de Sales
dc.creatorRobson Prucoli Posse
dc.date2023
dc.date.accessioned2026-07-07T02:44:27Z
dc.descriptionThe estimation of the reference évapotranspiration is fundamental in defining irrigation projects. However, an estimation using the standard equation requires climate variables that are difficult to measure and are not very accessible. Thus, the objective of this study was to calibrate and validate alternative methods to estimate evapotranspiration that use simple variables and to compare performance with the standard Penman-Monteith method for the municipality of Nova Venécia, Espírito Santo, Brazil. For this, a 12-year time series (2008-2019) of meteorological data from the Instituto Nacional de Meteorología was used. The standard FAO-56 Penman-Monteith method was used to evaluate alternative methods: Hargreaves and Samani, Benevides and Lopes, Linacre, Hamon and Camargo. Method performance was analyzed by correlation coefficient, Willmott index, root mean square of normalized error, and performance index. Calibration improved the statistical indices, increasing the performance of the Hargreaves and Samani, Benevides and Lopes, and Linacre methods to "very good" in the rainy season and to "intermediate" in the dry season. They were superior to the Hamon and Camargo methods, which continued to show "tolerable" to "very poor" performance in both periods.
dc.formatapplication/pdf
dc.identifier0120-9965
dc.identifierhttps://www.redalyc.org/articulo.oa?id=180381522014
dc.identifierhttps://www.redalyc.org/journal/1803/180381522014/
dc.identifierhttps://www.redalyc.org/journal/1803/180381522014/html/
dc.identifierhttps://www.redalyc.org/journal/1803/180381522014/180381522014.epub
dc.identifierhttps://www.redalyc.org/journal/1803/180381522014/movil
dc.identifier10.15446/agron.colomb.v41n2.108664
dc.identifier.urihttp://hdl.handle.net/123456789/422387
dc.languageen
dc.publisherUniversidad Nacional de Colombia
dc.relationhttp://www.redalyc.org/revista.oa?id=1803
dc.rightsAgronomía Colombiana
dc.sourceAgronomía Colombiana (Colombia) Num.2 Vol.41
dc.subjectAgrociencias
dc.titleCalibration of alternative equations to estimate the reference évapotranspiration in Nova Venécia, Espírito Santo, Brazil
dc.typeartículo científico

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Agronomía Colombiana - Universidad Nacional de Colombia