APPLICATION OF MODIS EVAPOTRANSPIRATION PRODUCT FOR A PASTURE AREA IN THE WEST AMAZON
Ciência E Natura
APPLICATION OF MODIS EVAPOTRANSPIRATION PRODUCT FOR A PASTURE AREA IN THE WEST AMAZON
Autor Correspondente: Agni Cristina de Carvalho Brito | [email protected]
Palavras-chave: remote sensing, et mod16, latent heat flux
Resumos Cadastrados
Resumo Inglês:
The processes of land use and occupation generate interventions in natural ecosystems making them susceptible to reactions, such as changes in the processes that govern water cycling, emphasizing the importance of monitoring the evapotranspiration behavior. In this sense, the objective of the present study was to verify the applicability of the evapotranspiration product originated by the MODIS sensor to a pasture area, at Fazenda Nossa Senhora in the municipality of Ouro Preto do Oeste - Rondônia. The MODIS (Terra / Aqua) sensor evapotranspiration data, estimated by the MOD16 algorithm, and the micrometeorological tower located in the pasture area, measured by the eddy covariance system, were used in the period from 2003 to 2010. It was verified that for the set of data ET Eddy x ET MOD16 (Quality control - QC 0/8), the data of ET MOD16 (QC 0/8) overestimate evapotranspiration, when compared to ET Eddy, and present a greater amplitude. No linear correlation was identified between the data sets of the study, however, the seasonal variations are captured by the product, presenting a good approximation with ET Eddy data, especially in the transition periods.
