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Conference Papers Year : 2018

First results on wave spectral properties from the CFOSAT satellite

Danièle Hauser
Lotfi Aouf
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  • PersonId : 1056523
A. Mouche
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  • PersonId : 1043744
A. Ollivier
  • Function : Author
  • PersonId : 1043745


CFOSAT is an innovative satellite mission to be launched on October 29th, 2018. It is presently in the final stage of preparation thanks to a fruitfull Chinese-French cooperation started in 2006. CFOSAT will provide for the first time colocated observations on wind vector, wave spectral parameters (wave spectra and associated parameters) from a combination of two radar instruments (SWIM and SCAT) working in altimeter and wave spectrometer modes (SWIM) and wind scatterometer mode (SCAT). The observation products will offer the opportunity to develop new studies from global observations, as joint analysis of space evolution of wind and waves, detailed analysis of the spectral properties of the wave field (in particular its directionality) and relationship between long waves (measured by SWIM) and short wave properties (indirect information from the normalized radar cross-section). The data will also be used in combination with wave and atmospheric numerical models (through assimilation) in order to improve wave and atmospheric forecast. The information on peak wavenumber, wave direction, directional spread for several wave spectrum partitions, will also be of great interest to study wave/current interactions.During these last years, the algorithms for wind and wave inversion have been prepared in France and China by expert laboratories and space agencies. They are under implementation in mission centers and will be ready to provide products a couple of weeks after the satellite launch. During the conference we will show the very first data sets obtained from SWIM as well as the first validation analysis of wave products. This will include comparisons to wave parameters from model outputs, in situ data and other satellite data (altimeter, SAR) at cross-over points. The focus will be put on the main parameters of the wave spectra (significant wave height, peak direction, peak wavelength).
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Dates and versions

insu-02060658 , version 1 (07-03-2019)



Lauriane Delaye, Danièle Hauser, Lotfi Aouf, Alice Dalphinet, Mamadou Camara, et al.. First results on wave spectral properties from the CFOSAT satellite. American Geophysical Union, Fall Meeting 2018, Dec 2018, Washington, United States. pp.abstract #OS32B-03. ⟨insu-02060658⟩
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