An Evaluation of MODIS Global Evapotranspiration Product (MOD16A2) as Terrestrial Evapotranspiration Study in Manokwari - West Papua - Indonesia

Abstract

MODIS global evapotranspiration was used widely in the world as terrestrial evapotranspiration for agriculture. This research aimed to evaluate the performance of MODIS global evapotranspiration product as terrestrial evapotranspiration in West Papua. A total of 32 MODIS global evapotranspiration image recording from 2016 to2018 were used. Four (4) statistical parameters, i.e., mean error (ME), root mean square error (RMSE), relative bias (RBIAS), and mean bias factor (MBIAS) are used to compare value from MODIS Global evapotranspiration product and value of evapotranspiration calculated by climatological data. The results show that MODIS global evapotranspiration value tends to overestimate and have lower deviation than climate data analysis. Statistical analysis present the ME = 0.43 mm/day, RMSE = 0.57 mm/day, RBIAS = 0.18, and MBIAS = 0.85. Based on statistical performance, MODIS global evapotranspiration can estimate evapotranspiration in Manokwari - West Papua with reasonable accuracy.