Perspectives for directional spectra assimilation: Results from a study based on joint assimilation of CFOSAT synthetic wave spectra and observed SAR spectra from Sentinel-1A

Lotfi Aouf (1) , Danièle Hauser (2) , Céline Tison (3) , Alexis Mouche (4)

1 CNRM - Centre national de recherches météorologiques
2 ESTER - LATMOS
3 CNES - Centre National d'Études Spatiales [Toulouse]
4 LOS - Laboratoire d’Oéanographie Spatiale [Plouzané]

With a low cut-off for the directional wave spectra CFOSAT will impact both mixed sea and swell. The complementary use of CFOSAT and SAR wave spectra will enhance the impact of the assimilation and therefore induce a more accurate sea state. The CFOSAT mission is on one hand a big challenge for operational wave forecasting system, and on the other hand a good opportunity for wave modellers in order to improve the source and dissipation terms in the wave model.

Keywords: surface ocean wave model; SAR; CFOSAT; forecast; surface ocean wave spectra; assimilation

Domains: Physics [physics]; Physics [physics]; Atmospheric and Oceanic Physics [physics.ao-ph]; Sciences of the Universe [physics]; Ocean, Atmosphere; Sciences of the Universe [physics]; Earth Sciences; Oceanography; Engineering Sciences [physics]; Signal and Image processing

Lotfi Aouf, Danièle Hauser, Céline Tison, Alexis Mouche. Perspectives for directional spectra assimilation: Results from a study based on joint assimilation of CFOSAT synthetic wave spectra and observed SAR spectra from Sentinel-1A. 2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Jul 2016, Beijing, China. pp.5820 - 5822, ⟨10.1109/IGARSS.2016.7730520⟩. ⟨insu-01405883⟩