Sea Surface Topography
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A 35-year satellite altimetry record lets scientists hold this year's El Niño up against its strongest predecessors.
Satellite observations of sea surface height indicated that the 2026 event continued to strengthen in early June.
A weak La Niña emerged in the equatorial Pacific in late 2025, and scientists are watching how it may help…
The Mission Sentinel-6B is an Earth-observing satellite jointly developed by NASA along with its U.S. and European partners. The satellite…
Sentinel-6B Science Sentinel-6B is the latest satellite in a series of spacecraft that NASA and its partners have used to…
Data provided by the water satellite are helping to improve tsunami forecast models.
If you want to understand how interconnected our planet is—how patterns and events in one place can affect life half…
