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Font, Jordi; Camps, Adriano; Borges, Andres; Martin-neira, Manuel; Boutin, Jacqueline; Reul, Nicolas; Kerr, Yann H.; Hahne, Achim; Mecklenburg, Susanne. |
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 image-reconstruction techniques; and presents the algorithmic approach implemented for the retrieval of... |
Tipo: Text |
Palavras-chave: Aperture synthesis; Imaging; Microwave radiometry; Remote sensing; Salinity. |
Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00004/11482/8066.pdf |
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Kerr, Yann H.; Waldteufel, Philippe; Wigneron, Jean-pierre; Delwart, Steven; Cabot, Francois; Boutin, Jacqueline; Escorihuela, Maria-jose; Font, Jordi; Reul, Nicolas; Gruhier, Claire; Juglea, Silvia Enache; Drinkwater, Mark R.; Hahne, Achim; Martin-neira, Manuel; Mecklenburg, Susanne. |
It is now well understood that data on soil moisture and sea surface salinity (SSS) are required to improve meteorological and climate predictions. These two quantities are not yet available globally or with adequate temporal or spatial sampling. It is recognized that a spaceborne L-band radiometer with a suitable antenna is the most promising way of fulfilling this gap. With these scientific objectives and technical solution at the heart of a proposed mission concept the European Space Agency (ESA) selected the Soil Moisture and Ocean Salinity (SMOS) mission as its second Earth Explorer Opportunity Mission. The development of the SMOS mission was led by ESA in collaboration with the Centre National d'Etudes Spatiales (CNES) in France and the Centro para... |
Tipo: Text |
Palavras-chave: Interferometry; L-band; Sea surface salinity (SSS); Soil moisture; Soil Moisture and Ocean Salinity (SMOS); Vegetation water content. |
Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00004/11483/8065.pdf |
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Wickert, Jens; Cardellach, Estel; Martin-neira, Manuel; Bandeiras, Jorge; Bertino, Laurent; Andersen, Ole Baltazar; Camps, Adriano; Catarino, Nuno; Chapron, Bertrand; Fabra, Fran; Floury, Nicolas; Foti, Giuseppe; Gommenginger, Christine; Hatton, Jason; Hoeg, Per; Jaggi, Adrian; Kern, Michael; Lee, Tong; Li, Zhijin; Park, Hyuk; Pierdicca, Nazzareno; Ressler, Gerhard; Rius, Antonio; Rosello, Josep; Saynisch, Jan; Soulat, Francois; Shum, C. K.; Semmling, Maximilian; Sousa, Ana; Xie, Jiping; Zuffada, Cinzia. |
GEROS-ISS stands for GNSS REflectometry, radio occultation, and scatterometry onboard the International Space Station (ISS). It is a scientific experiment, successfully proposed to the European Space Agency in 2011. The experiment as the name indicates will be conducted on the ISS. The main focus of GEROS-ISS is the dedicated use of signals from the currently available Global Navigation Satellite Systems (GNSS) in L-band for remote sensing of the Earth with a focus to study climate change. Prime mission objectives are the determination of the altimetric sea surface height of the oceans and of the ocean surface mean square slope, which is related to sea roughness and wind speed. These geophysical parameters are derived using reflected GNSS signals (GNSS... |
Tipo: Text |
Palavras-chave: Global Navigation Satellite Systems (GNSS) reflectometry; GNSS radio occultation; International space station; Mean sea level; Mesoscale ocean currents. |
Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00359/47016/46973.pdf |
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