METHODOLOGICAL EVALUATION OF EVAPOTRANSPIRATION ESTIMATED BY THE SEBAL ALGORITHM IN THE BRAZILIAN SEMI-ARID
DOI:
https://doi.org/10.21680/2447-3359.2021v7n1ID21245Abstract
The main objective of this work was to evaluate the evapotranspiration estimate by the SEBAL algorithm (surface energy balance algorithm for land) in the Brazilian semiarid region. For this, a bibliographic survey was made on the subject, to diagnose if there is convergence on the efficiency of the use of SEBAL in the application and planning of water resources, making a comparative analysis of several studies published in the scientific environment. The main results found converged that SEBAL is a good method, since the error oscillates smoothly compared to conventional estimates, in addition to allowing large geographic scale, high resolution and low cost analysis. It is considered that SEBAL, although it has limitations with atmospheric interference, can be used, what is recommended is to admit the margin of error and to carry out analyzes with historical series to statistically validate the results.