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SMOS: The challenging sea surface salinity measurement from space

AuthorsFont, Jordi ; Camps, Adriano ; Borges, A.; Martín-Neira, Manuel; Boutin, Jacqueline; Reul, Nicolás; Kerr, Y.; Hahne, A.; Mecklenburg, S.
Issue DateMay-2010
PublisherInstitute of Electrical and Electronics Engineers
CitationProceedings of the IEEE 98(5): 649-665 (2010)
AbstractSoil 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 image-reconstruction 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
Publisher version (URL)http://dx.doi.org/10.1109/JPROC.2009.2033096
Identifiersdoi: 10.1109/JPROC.2009.2033096
issn: 0018-9219
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