Inter-comparison study of asymptotic models for sea surface emissivity simulation at L-band

Author

Vall-llossera, M. ; Miranda, J. ; Camps, A. ; Villarino, R. ; Duffo, N. ; Corbella, I.

Author_Institution

Dept. of Theory and Signal Commun., Univ. Politecnica de Catalunya, Barcelona, Spain

Volume

5

fYear

2003

fDate

2003

Firstpage

3073

Abstract

The Soil Moisture and Ocean Salinity (SMOS) Earth Explorer Opportunity Mission of the European Space Agency (ESA) aims to provide a global and precise soil moisture estimation over land and salinity content over oceans from the L-band radiometer MIRAS. The accuracy of salinity retrieval algorithms, which are iterative methods, directly depends on the accuracy of the sea surface emissivity models and on the sea surface spectrum applied for characterizing the sea roughness. This paper presents an inter-comparison study of the most popular emissivity models when they are used for estimating the brightness temperature of the sea surface at L-band. The influence of the spectrum model has been also studied.

Keywords

Earth; brightness; emissivity; iterative methods; oceanographic techniques; radiometry; ESA; Earth Explorer Opportunity Mission; European Space Agency; L-band microwave interferometric radiometer aperature synthesis; L-band radiometer MIRAS; Soil Moisture and Ocean Salinity; asymptotic models; brightness; iterative methods; salinity retrieval algorithms; sea roughness; sea surface emissivity simulation; Earth; L-band; Ocean temperature; Radiometry; Rough surfaces; SMOS mission; Sea surface; Soil moisture; Space missions; Surface roughness;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International

Print_ISBN

0-7803-7929-2

Type

conf

DOI

10.1109/IGARSS.2003.1294687

Filename

1294687