EVAPOTRANSPIRATION ESTIMATE ON PASTURE AREA IN SANTA MARIA – RS
Keywords:Bioma Pampa. Eddy covariance. Evapotranspiration.
The eddy covariance technique was used to estimate the sensible and latent heat flux between the atmosphere and the Pampa Biome in the period from 20 November 2013 to 20 November 2014. Annual Evapotranspiration (ET) was 1021 mm, corresponding to 55% of the annual precipitation. The ET is highly correlated with the net radiation (97%). The Bowen ratio was indicated that most of the available energy was used for the evaporation. The evaporative fraction remained about average, with greater variability in the colder months.
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