Correlação entre evapotranspiração e evaporação
Palavras-chave:
coeficiente conversão, tanque evaporação, método blaney, luz solar, temperatura médiaResumo
This study was concerned with the determination of evapo- transpiration by three methods; evaporation pan (U.S. W.B. Class A Pan), Blaney-Criddle equation and the Piche evaporimeter at seven location in the State of Minas Gerais (Lavras, Juiz de Fora, Viçosa, Governador Valadares, Barbacena, Montes Claros e Poços de Caldas) and one in the state of Espirito Santo (Vitoria).
We found that the value of the conversion coefficient "K" should be determined foreach method. It was also found that for all locations ” the calculated evaporation was higher with the Blaney-Criddle equation and lower with the Piche evaporimeter.
Referências
BLANEY, H.F. & CRIDDLE, W.D. Determining consumptive use for water developments. In: Methods for estimating evapotranspiration. New York, American Society of Civil Engineers,1966. p. 1-34.
CHANG, J. Atmometers. In: Climate and agriculture. Chicago, Aldine Publishing Company, 1968. p. 190-193.
DAKER, A. Valores de % mensal das horas de luz solar, para latitudes austrais de 0o a 50°. In: A água na agricultura. Rio de Janeiro, Livraria Freitas Bastos, 1970. V. 3, p. 46.
, HARGREVES, G. H. Consumptive use computations from evapo- ration pan data. In: Methods for estimating evapotranspiration. New York, American Society of Civil Engineers, 1966. p. 35-62.
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