Using Large Aperture Scintillometer to validate pixel heat flux based on remote sensing models

摘要

To validate the accuracy of remote sensing flux model and to test the sensitivities of parameters, one Large Aperture Scintillometer (LAS), one Eddy Covariance (EC) system and other supporting observations were used to estimate sensible heat flux of a typical natural surface. The remote sensing model is Surface Temperature - Resistance (STR) model. The results obtained from different spatial scales were inter-compared. It shows that (1) there are better changing trend of sensible heat fluxes obtained by LAS and EC and STR methods; (2) the remote sensing assessed sensible heat flux was a good agreement with measurements by using LAS and EC, H/sub STR/ is rough 8% larger than H/sub LAS/; (3) LAS is reliable to validate the pixel sensible heat flux derived by remote sensing model.