Análise espacial da influência dos elementos meteorológicos sobre a evapotranspiração de referência em Minas Gerais
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Data
2010
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Resumo
In general the methodologies most used and recommended to estimate crop water requirements are
based on meteorological data. The aim of this study was to evaluate the effect of some meteorological
elements on reference evapotrasnpiration (ET 0 ) estimate in Minas Gerais State, Brazil. The values of ET 0
were estimated daily by the Penman-Monteith-FAO method, using daily data over a period of 17 years.
The influence of each meteorological element on ET 0 values was determined by sensitivity tests and
interpolated map analysis for each element under study. The results showed that the reference
evapotranspiration is very variable in Minas Gerais, with annual average values between 2.51 to 4.59
mm d -1 . The sensitivity analysis showed a high variation effect of meteorological elements in ET 0 in Minas
Gerais, with high sensitivity to vapor pressure deficit, wind speed and radiation. The radiation was the
most important meteorological element, with the highest influence in ET 0 .
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Meteorologia, Necessidade hídrica, Variabilidade espaço-temporal, Meteorology, Spatial-temporal variability, Water requirement
Citação
LEMOS FILHO, Luis C. A.; CARVALHO, Luiz G.; EVANGELISTA, Adão W. P.; ALVES JÚNIOR, José. Análise espacial da influência dos elementos meteorológicos sobre a evapotranspiração de referência em Minas Gerais. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 14, n. 12, p. 1294-1303, 2010.