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Benefits of the future sea surface salinity measurements from SMOS: Generation and characteristics of SMOS geophysical products ArchiMer
Obligis, E; Boone, C; Larnicol, G; Philipps, S; Tranchant, B; Le Traon, Pierre-yves.
Soil Moisture and Ocean Salinity (SMOS) level 2 and level 3 products are simulated and characterized over a one-year time period. A simulator is first used to evaluate the sea surface salinity (SSS) error of level 2 SMOS products. An optimal interpolation method is then adapted to map the surface salinity in order to simulate a level 3 SMOS product. The quality of the simulated products is satisfactory. The mean error of the SSS at pixel scale is around 1 psu, and the error on the final gridded product fits the Global Ocean Data Assimilation Experiment requirements (0.2 psu).
Tipo: Text Palavras-chave: Soil Moisture and Ocean Salinity SMOS; Sea surface salinity SSS; Remote sensing; Optimal interpolation; Microwave radiometry; Brightness temperatures.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-3773.pdf
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Modeling sun glitter at L-band for sea surface salinity remote sensing with SMOS ArchiMer
Reul, Nicolas; Tenerelli, Joseph; Chapron, Bertrand; Waldteufel, P.
Since the sun is an extremely strong radiation source at L-band, accounting for sun glint over the ocean, i.e., solar radiation reflected by the sea surface toward downward-looking radiometers, raises a significant challenge for the remote sensing of sea surface salinity. This paper describes a dedicated physical model for sun glint at L-band frequencies and provides quantitative and qualitative estimates of the sun glint contamination impinging the antenna of the Microwave Imaging Radiometer with Aperture Synthesis interferometer onboard the future European Space Agency's Soil Moisture and Ocean Salinity (SMOS) mission, The sun brightness temperature expected during the mission period is first estimated from past solar flux data with an expected range of...
Tipo: Text Palavras-chave: Sun glitter; Sea surface salinity SSS; Rough surface scattering; Ocean remote sensing; Microwave radiometry.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3565.pdf
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