Reference evapotranspiration models using different time scales in the Jaboticabal region of São Paulo, Brazil

• Autor(a) principal: Caporusso, Natália Buzinaro
• Data de Publicação: 2014
• Outros Autores: Rolim, Glauco de Souza
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Acta Scientiarum. Agronomy (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18277
• topic: model; penman-monteith; Priestley and Taylor; Tanner and Pelton; Thornthwaite; irrigação e drenagem

The aim of this paper is to compare 18 reference evapotranspiration models to the standard Penman-Monteith model in the Jaboticabal, São Paulo, region for the following time scales: daily, 5-day, 15-day and seasonal. A total of 5 years of daily meteorological data was used for the following analyses: accuracy (mean absolute percentage error, Mape), precision (R2) and tendency (bias) (systematic error, SE). The results were also compared at the 95% probability level with Tukey’s test. The Priestley-Taylor (1972) method was the most accurate for all time scales, the Tanner-Pelton (1960) method was the most accurate in the winter, and the Thornthwaite (1948) method was the most accurate of the methods that only used temperature data in the equations.