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DOI: 10.1109/JPROC.2009.2033096

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Proceedings of the IEEE 98 (2010) 5

SMOS : the challenging sea surface salinity measurement from space

J. Font (  Corresponding author ) 1, A. Camps 2, A. Borges 3, M. Martin-Neira 4, J. Boutin 5, N. Reul 6, Y.H. Kerr 7, A. Hahne 4, S. Mecklenburg 8

(2010)

Soil Moisture and Ocean Salinity, European Space Agency, is the first satellite mission addressing the challenge of measuring sea surface salinity from space. It uses an L-band microwave interferometric radiometer with aperture synthesis (MIRAS) that generates brightness temperature images, from which both geophysical variables are computed. The retrieval of salinity requires very demanding performances of the instrument in terms of calibration and stability. This paper highlights the importance of ocean salinity for the Earth's water cycle and climate; provides a detailed description of the MIRAS instrument, its principles of operation, calibration, and imagereconstruction techniques; and presents the algorithmic approach implemented for the retrieval of salinity from MIRAS observations, as well as the expected accuracy of the obtained results.

1:	Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] (ICM)
	Consejo Superior de Investigaciones Cientificas
2:	Universitat Politècnica de Catalunya (UPC)
	Universitat Politécnica de Catalunya
3:	Construcciones aeronauticas S.A.
	European aeronautic
4:	European Space Research and Technology Centre (ESTEC)
	ESA - European Space Agency
5:	Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN)
	Institut de recherche pour le développement [IRD] – INSU – CNRS : UMR7159 – Université Pierre et Marie Curie [UPMC] - Paris VI – Muséum National d'Histoire Naturelle (MNHN)
6:	Institut Français de Recherche pour l'Exploitation de la Mer - Nantes (IFREMER Nantes)
	Université de Nantes
7:	Centre d'études spatiales de la biosphère (CESBIO)
	CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III
8:	European State Research Institute (ESRIN)
	ESA

subject

:

Life Sciences/Ecology, environment/Ecosystems

keyword(s): Aperture synthesis – imaging – microwave radiometry – remote sensing – salinity

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From: Dominique Bruel <>

Submitted on: Wednesday, 23 May 2012 15:43:22

Updated on: Wednesday, 23 May 2012 22:58:52