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

Author

Zhu, Zhilin ; Sun, Xiaomin ; Xu, Jinping ; Wang, Weimin ; Zhang, Renhua

Author_Institution

Inst. of Geogr. Sci., Chinese Acad. of Sci., Beijing

Volume

3

fYear

2004

fDate

20-24 Sept. 2004

Firstpage

1984

Abstract

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_STR is rough 8% larger than H_LAS; (3) LAS is reliable to validate the pixel sensible heat flux derived by remote sensing model

Keywords

geophysical techniques; land surface temperature; remote sensing; EC system; Eddy Covariance system; LAS; Large Aperture Scintillometer; STR model; Surface Temperature-Resistance model; pixel sensible heat flux estimation; remote sensing model; Apertures; Atmospheric measurements; Electronic mail; Fluctuations; Refractive index; Remote sensing; Sun; Surface resistance; System testing; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International

Conference_Location

Anchorage, AK

Print_ISBN

0-7803-8742-2

Type

conf

DOI

10.1109/IGARSS.2004.1370736

Filename

1370736