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2D ocean waves spectra from space: a challenge for validation and synergetic use ArchiMer
Mouche, Alexis; He, W.; Husson, R.; Guitton, Gilles; Chapron, Bertrand; Li, Huimin.
Sentinel-1 A now routinely acquires data over the ocean since 2014. Data are processed by ESA through the Payload Data Ground Segment up to Level-2 for Copernicus users. Level-2 products consist of geo-located geophysical parameters related to wind, waves and ocean current. In particular, Sentinel-1A wave measurements provide 2D ocean swell spectra (2D wave energy distribution as a function of wavelength and direction) as well as integrated parameters such as significant wave height, dominant wavelength and direction for each partition. In 2016, Sentinel-1 B will be launched by ESA and GF-3 by CNSA. Then in 2018, CFOSAT (China France Oceanography Satellite project), a joint mission from the Chinese and French Space Agencies, will be launched. They will...
Tipo: Text Palavras-chave: Ocean remote sensing; Synthetics aperture radar; Ocean wave-spectrometer; 2D ocean wave spectrum; Level-4.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00364/47469/47488.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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