Sea-level track from Sentinel-3A

This is the first track measured by Sentinel-3A’s Synthetic Aperture Radar Altimeter immediately after it was switched on. The instrument will be a vital tool for closely monitoring changes in surface ocean waters, sea-state and sea-ice thickness. The track, which captures features in the Gulf Stream current, compares well to the background data that comprises near-realtime data from the CryoSat, Jason-2 and Altika satellites.