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Story summary
- The Copernicus Sentinel-6B satellite began delivering its first data on North Atlantic sea-level variations after launching on November 17, 2025.
- The mission aims to enhance the long-term sea-level record, crucial for understanding climate change.
- The Poseidon-4 altimeter provides high-precision measurements that support marine forecasting and coastal protection.
- The satellite operates with its twin, Sentinel-6 Michael Freilich, in a NASA and ESA partnership to ensure continuity through 2030.
