Artigo
Surface energy balance system (SEBS) and satellite data for monitoring water consumption of irrigated sugarcane
Registro en:
FERREIRA, E. et al. Surface energy balance system (SEBS) and satellite data for monitoring water consumption of irrigated sugarcane. Engenharia Agrícola, Jaboticabal, v. 36, n. 6, p. 1176-1185, nov./dez. 2016.
Autor
Ferreira, Elizabeth
Mannaerts, Christiaan M.
Dantas, Antonio A.
Maathuis, Bernardus H.
Institución
Resumen
The objective of this research was to evaluate the water consumption of irrigated
sugarcane areas using the Surface Energy Balance System (SEBS) driven by products derived from
Meteosat Second Generation (MSG), SPOT/VEGETATION, Terra/MODIS satellite data and
meteorological observations data from Minas Gerais State, Brazil. The actual evapotranspiration
from SEBS model (ET-SEBS) was compared against crop evapotranspiration under standard
conditions (ETc), which was obtained from weather data based on reference evapotranspiration
(ET0) and the crop coefficient (Kc) values from FAO. Results showed that there was a good
agreement between ET-SEBS and ETc when sugarcane was at maximum development stage under
center pivot irrigation and the Kc value corresponded to 1.25. The ET-SEBS values seem to
overestimate water use during sugarcane late stage in areas which the Kc value was 0.7. Increasing
Kc to a value equals to 1.25 for sugarcane late stage, the differences between ETc and ET-SEBS
decreased; Kc is not so high at that stage, reinforcing ET-SEBS overestimation. In conclusion, the
estimation of evapotranspiration using satellite data and SEBS model approach was appropriated to
monitor water usage of large sugarcane areas irrigated by center pivots in Minas Gerais State,
Brazil.