SMOS calibration and validation over the Salar de Uyuni

Author

Escorihuela, M.J. ; Escorihuela, A. ; Richaume, P. ; Kerr, Y.H.

Author_Institution

isardSAT, Barcelona, Spain

fYear

2012

fDate

22-27 July 2012

Firstpage

1124

Lastpage

1126

Abstract

The Salar de Uyuni is a large, flat and radiometrically homogeneous area. Its extent is several tenths the SMOS footprint and its emissivity is high and rather homogeneous except when flooded (about 3 months per year). It is located in a rather un-inhabitated area with no RFI. Therefore it provides a perfect calibration site for SMOS brightness temperature and the dielectric constant product validation. In this paper several calibration/validation issues were assessed: SMOS and AMSR-E brightness temperature cross-validation over the site, the influence of Full/Dual polarisation mode on SMOS angular signature and L2 dielectric constant product validation.

Keywords

calibration; geophysical techniques; soil; AMSR-E brightness temperature; L2 dielectric constant product validation; SMOS angular signature; SMOS brightness temperature; SMOS calibration; SMOS footprint; SMOS validation; Salar de Uyuni; calibration issue; calibration site; dielectric constant product validation; polarisation mode; uninhabitated area; validation issue; Brightness temperature; Calibration; Dielectric constant; Dielectric measurements; Extraterrestrial measurements; Microwave radiometry; Temperature measurement; SMOS; Salar de Uyuni; brightness temperature; calibration; dielectric constant; validation;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6351351

Filename

6351351