Computation of Landsat based Evapotranspiration Maps along the South Platte and North Platte Rivers

摘要

It is important to quantify the consumptive water use by the vegetation when managingregional water resources in irrigated areas. Suitable models and algorithms applied tohigh resolution (30 m) satellite imagery provide a cost effective and time efficientmethod to obtain evapotranspiration estimations from bare soil and vegetation. TheMETRIC image processing model calculates net radiation, soil heat flux and sensibleheat flux through a number of steps before estimating evapotranspiration as the residualfrom the energy balance. Sensible heat flux algorithms are calibrated using an operator