Implementação do algoritmo SEBAL em linguagem LEGAL/SPRING: aplicação para o complexo irrigado de Petrolina-PE/Juazeiro-BA

Abstract

The understanding of Water-Land-Atmosphere interactions is extremely important for the understanding of all the processes involved in the hydrological cycle. Based upon this premise, this research aims to help this understanding, mapping through the implementation of SEBAL algorithm in a free language and national called LEGAL; the surface energy fluxes and real hourly evapotranspiration, using the Landsat TM sensor 5. In the analyzes, we chose to analyze the performance of scripts generated from a case study, the chosen region was an area corresponding to the irrigated perimeter of Petrolina-PE/Juazeiro-BA, where by running the scripts was spatialized and analyzed the variables involved in energy balance: Surface Radiation Balance, Soil Heat Flux, Heat Sensitive Flow, Latent Heat Flux and Real Hourly Evapotranspiration. The results indicate excellent performance of elaborate scripts, where the obtained values show good agreement with values already established in the literature. In addition to the analyzes as well as thematic maps, samples were extracted and presented their statistics box-shaped diagram.