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Título: | SMOS Semi-Empirical Ocean Forward Model Adjustment |
Autor: | Guimbard, Sébastien CSIC ORCID; Gourrion, Jérôme CSIC; Portabella, Marcos CSIC ORCID ; Turiel, Antonio CSIC ORCID ; Gabarró, Carolina CSIC ORCID ; Font, Jordi CSIC ORCID CVN | Fecha de publicación: | may-2012 | Editor: | Institute of Electrical and Electronics Engineers | Citación: | IEEE Transactions on Geoscience and Remote Sensing 50(5): 1676-1687 (2012) | Resumen: | A prerequisite for the successful retrieval of geophysical parameters from remote sensing measurements is the development of an accurate forward model. The European Space Agency Soil Moisture and Ocean Salinity (SMOS), carrying onboard an L-band interferometric radiometer (Microwave Interferometric Radiometer using Aperture Synthesis), was launched on November 2009. Due to the lack of L-band passive ocean measurements from space, several prelaunch forward models were developed and initially used in the SMOS ocean salinity operational processor. In this paper, an update of the prelaunch semi-empirical forward model is presented, using for the first time, real SMOS data. In particular, the ocean surface emissivity modulation at L-band due to rough sea surface is reviewed and reanalyzed. A new model definition is provided with the help of a simple neural network. The improvement is quantified in terms of retrieved salinity accuracy compared with the climatology and concerns essentially the range of wind speeds higher than 12 m/s | Versión del editor: | https://doi.org/10.1109/TGRS.2012.2188410 | URI: | http://hdl.handle.net/10261/87173 | DOI: | 10.1109/TGRS.2012.2188410 | Identificadores: | issn: 0196-2892 |
Aparece en las colecciones: | (ICM) Artículos (UTM) Artículos |
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