Perspective of Sentinel-1 for Marine/Wind/Wave/Current Applications
Johannessen, Johnny A.¹; Kerbaol, V.²; Collard, F.²; Chapron, B.^3
1NERSC, NORWAY; ²CLS, FRANCE; ³IFREMER, FRANCE

The Sentinel-1 CSAR mission will operate in high-to-medium resolution (5 - 100 m) imaging mode for coastal zones monitoring together with the imagette mode operation for global ocean wave monitoring. This ensures sustainable operation and provision of Level-2 wind and wave core products as well as Doppler anomaly estimates for sea surface current retrievals, within 3 hours of acquisitions. Furthermore, improved or additional wind, waves and radial surface currents products (e.g. Doppler-based wind fields or swell tracking products) are currently defined and prototyped as part of a Sentinel-1 Marine Collaborative Ground Segment to complement and extend the existing core products. All these products will, in turn, complement the marine core service under GMES/Copernicus as well as the maritime oil spill and ship routing surveillance application. Moreover, in combination with data products from ERS and Envisat a consistent C-band SAR based long time series data archive of near surface wind, wave and mean surface current will be established. This is expected to enable the development of new applications such as in the area of climate change and associated monitoring. In this presentation simulated Sentinel-1 data will be presented in respect to near surface wind, wave and surface current retrievals.