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Accounting for atmospheric boundary layer variability on flux estimation from RS observations Inra
Timmermans, W.J.; Bertoldi, G.; Albertson, J.D.; Olioso, A.; Su, Z.; Gieske, A.S.M..
A Large Eddy Simulation (LES) model is coupled to a remote-sensing-basedSVAT that accounts for soil and vegetation in order to study the feedback effectsbetween surface state and spatial variability in fluxes, through the induction ofspatial variability in the lower atmosphere. As such, this study focuses on sensibleheat flux exchange. The simulations indicated that changes are introduced to theflux distributions mainly at higher surface temperatures. A scale-dependentmethod is presented to account for feedback effects. This showed the mostsignificant correlation between surface and air temperature at scales from 500 to1000m and modulated the spatial variance of sensible heat flux. This suggeststhat feedback effects act to limit the spatial variability in...
Tipo: Journal Article Palavras-chave: REMOTE SENSING; MODELLING; LARGE EDDY SIMULATION; LES; SVAT; HEAT FLUX EXCHANGE.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200838de219f&uri=/notices/prodinra1/2008/09/
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