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A new empirical model of sea surface microwave emissivity for salinity remote sensing

AuthorsCamps, Adriano ; Font, Jordi ; Camps, Adriano ; Vall-llossera, Mercè; Julià Brugues, Agustí
Issue DateJan-2004
PublisherAmerican Geophysical Union
CitationGeophysical Research Letters 31(1): L01309 (2004)
AbstractSMOS (Soil Moisture and Ocean Salinity) is a European Space Agency mission that aims at generating global ocean salinity maps with an accuracy of 0.1 psu, at spatial and temporal resolution suitable for climatic studies. The satellite sensor is an L-band (1400-1427 MHz) aperture synthesis interferometric radiometer. Sea surface salinity (SSS) can be retrieved since the brightness temperature of sea water is dependent on the frequency, angle of observation, dielectric constant of sea water, sea surface temperature and sea surface state. This paper presents a new empirical sea water emissivity model at L-band in which surface roughness effects are parameterized in terms of wind speed and significant wave height. For the SMOS mission these parameters can be obtained from external measurements and model diagnostics. An analysis has been done on the effect on SSS retrieval of different sources for this auxiliary information. Copyright 2004 by the American Geophysical Union
Publisher version (URL)https://dx.doi.org/10.1029/2003GL018964
Identifiersdoi: 10.1029/2003GL018964
issn: 0094-8276
e-issn: 1944-8007
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