User Guides - Sentinel-3 Altimetry - Significant Wave Height - Sentinel Online
Significant Wave Height
The Significant Wave Height (SWH) is the average wave height (from trough to crest) of the highest third (33.33%) of the waves in a given sample period.
The Sentinel-3 mission is able to monitor wave heights from 0 to 20 m.
The Sentinel-3 mission SWH goal accuracy is 4% (8 cm at 2 m SWH) for Near Real-Time (NRT) products and 1% (2 cm at 2 m SWH) for Slow Time Critical (STC products).
The marine sea state (SWH or Hs) product is a critical product for all maritime safety and rescue operations.