0000000000890970
AUTHOR
W. P. Kustas
The impact of in-canopy wind profile formulations on heat flux estimation using the remote sensing-based two-source model for an open orchard canopy in southern Italy
Abstract. For open orchard and vineyard canopies containing significant fractions of exposed soil (>50%), typical of Mediterranean agricultural regions, the energy balance of the vegetation elements is strongly influenced by heat exchange with the bare soil/substrate. For these agricultural systems a "two-source" approach, where radiation and turbulent exchange between the soil and canopy elements are explicitly modelled, appears to be the only suitable methodology for reliably assessing energy fluxes. In strongly clumped canopies, the effective wind speed profile inside and below the canopy layer can highly influence the partitioning of energy fluxes between the soil and vegetation comp…
Estimating surface energy fluxes using a micro-meteorological model and satellite images
El creciente interes de las comunidades cientificas meteorologicas, climaticas e hidrologicas por los distintos componentes del balance energetico de superficie, y especialmente por la evapotranspiracion, ha fomentado el desarrollo de distintos modelos micrometeorologicos para evaluar los flujos de energia de superficie a escala local. Los recientes avances en las tecnicas de teledeteccion satelitaria podrian permitir el seguimiento de estos flujos de energia de superficie sobre zonas extensas. Sin embargo, la mayoria de los modelos actuales requieren calibraje in situ o parametros derivados empiricamente, cosa que limita su aplicacion operacional a gran escala. El objetivo de este trabajo …