Abstract One of the significant components hydrological cycle is evapotranspiration. Monthly meteorological parameters 35 years from 19 stations across Northern Region Nigeria (NRN) were obtained and utilized for calibration Hargreaves–Samani (HS) model by comparing between potential evapotranspiration (ET o ) values estimated original HS Penman–Monteith (FAO-56 PM) models. The calibrated equat...

The United Nations Food and Agricultural Organization (FAO) approved the Hargreaves-Samani formula (HAR-85) as an alternative to standard Penman-Monteith method (FAO-PM) for estimating grass reference evapotranspiration (ETo). With much less data demand, HAR-85 is unequivocally useful where meteorological variables are often scarce, incomplete or unavailable. Herein, we evaluate against FAO-PM ...

Objetivou-se determinar modelos de estimativa da evapotranspiração referência (ETo) para a região sul do Triângulo Mineiro. Para calcular as estimativas ETo foram utilizados dados diários INMET Frutal, Conceição das Alagoas e Uberaba-MG. Foram testados seis assim compará-los com o modelo Penman Monteith (PM), que foi considerado padrão. Após cálculo diária, aplicada análise regressão, utilizand...