Cross Comparison of Penman Monteith Potential Evapotranspiration Estimation Methods with Energy Equilibrium Models Using Remote Sensing Image Data

Evapotranspiration is the amount of total water that is returned to the atmosphere from the surface, water bodies and vegetation. This study aims to (1) look at the condition of the Potential Evapotranspiration rate in Batam City by using Remote Sensing data extraction (2) to find out the accuracy of the estimation results of Potential Evapotranspiration using the Energy balance method. This study uses two methods in estimating the value of evapotranspiration, namely the energy equilibrium method and the Penman-Monteith method. The Penman Monteith method is used as a comparison of comparable data references that are considered correct for calculating the accuracy value of the Energy equilibrium method. Analysis of the potential Evapotranspiration conditions in Batam city with energy balance method using Vegetation objects found that the potential Evapotranspiration value was 37.05 mm/day to 37.21 mm/day. Potential Evapotranspiration values with high density vegetation conditions make wet soil conditions make a maximum area of potential evapotranspiration.