CHARLES, E.', HUSSON. R.?, DODET, G.’, MOUCHE, A.? AND WAVE-TAC TEAM 
Collecte Localisation Satellites (CLS), Ramonville Saint-Agne, France *Collecte Localisation Satellites (CLS), Brest, France 
Univ Brest, CNRS, Ifremer, IRD, Laboratoire d'Oceanographie Physique et Spatiale (LOPS), IUEM, Plouzane, France. 
creation of a dedicated Wave Thematic Assembly Center 
(WAVE-TAC) in 2018, a wider range of products and the 
consolidation of the satellite constellation. 
The range of wave products increased significantly by 
integrating for the first time Level-3 spectral (SPC) products 
derived from Sentinel-1 Synthetic Aperture Radar (SAR) 
missions. This product provides not only the significant 
wave height (SWH) but also the wave period and direction 
for different observed swell systems. Additionally, waves 
backward and forward propagation in space/time alonc 
The dissemination of the first Copernicus Marine Service 
operational wave products started mid-2017 within the 
Sea Level Thematic Assembly Centre (SL-TAC) using 
öbservations derived from Jason-3 and Sentinel-3A 
altimeter missions. During the following four years, the 
wave satellite service has considerablv evolved with: the 
48 hours of altimetry measurements 
7SAT 
2SAT 
Significant wave height (m. 
1 
Figure 1: Along-track SWH over 48 hours for a 2-satellite constellation (Jason3 and Sentinel-3A) and a 7-satellite constellation (Jason-3, 
Sentinel-3A, SARAL /AltiKa, CrvoSat-2, Sentinel-3B. CFOSAT and HaiYana-2B).