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Influência da acurácia de instrumentos de medidas na comparação de métodos de estimativa da evapotranspiração de referência
Other Titles: 
Influence of measurement instrument accuracy compared to reference evapotranspiration estimating methods
  • Universidade Estadual Paulista (UNESP)
  • Universidade de São Paulo (USP)
  • 1413-7895
  • 1808-3765
The aim of this investigation was to evaluate four reference methods to estimate evapotranspiration (Makkink, Hargreaves, Class A pan and Radiation), compared tb Penman-Monteith method, that is considered standard by the Food and Agricultural Organization of the United Nations (FAO). Errors due to variable measurements in the reference evapotranspiration estimate were taken into consideration. The research was developed in an experimental area of the Department of Rural Engieering of the School of Agricultural and Veterinarian Sciences, Campus of Jaboticabal, São Paulo State University. An automated weather station was used and it was equipped with sensors to measure global and net radiation, temperature, relative humidity, and wind speed. The aftermath showed a better adjustment to Hargreaves. Makkink, Class A pan and Radiation methods are different from Penman-Monteith, therefore, they cannot be compared. To evaluate methods to estimate evapotranspiration and avoid possible evaluation errors, ETo estimate errors must be considered.
Issue Date: 
Irriga, v. 13, n. 1, p. 63-80, 2008.
Time Duration: 
  • Clas A Pari e Solar Radiation
  • Hargreaves
  • Makkink
  • Penman-Monteith
  • Atmospheric humidity
  • Atmospheric radiation
  • Atmospheric temperature
  • Error analysis
  • Evapotranspiration
  • Irrigation
  • Wind
  • accuracy assessment
  • comparative study
  • estimation method
  • evapotranspiration
  • experimental study
  • measurement method
  • net radiation
  • Penman-Monteith equation
  • relative humidity
  • solar radiation
  • standard (reference)
  • temperature
  • wind velocity
  • Brazil
  • Sao Paulo [Brazil]
  • South America
Access Rights: 
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Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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