How two satellites are studying hurricanes during El Niño
In November 2025, NASA and its European partners launched the Sentinel-6B satellite to improve hurricane forecasts, help protect infrastructure and benefit commercial industries, including shipping. The satellite is now flying 30 seconds behind its predecessor, Sentinel-6 Michael
The launch of Sentinel-6B, in conjunction with its twin satellite Sentinel-6 Michael, marks a significant advancement in hurricane forecasting capabilities. By flying in tandem, these satellites can provide unprecedented high-resolution data on sea surface height and ocean swell, which are critical factors in predicting hurricane trajectories and intensities. This enhanced forecasting capability is particularly timely, given the influence of El Niño on global weather patterns, which can have a profound impact on hurricane activity.
The engineering feat here lies in the precise orbital mechanics required to maintain the two satellites in a carefully calibrated formation. Flying 30 seconds apart allows them to create a stereo-like view of the ocean's surface, effectively doubling the resolution of the data they collect. This level of detail will be invaluable for scientists seeking to understand the complex interactions between ocean currents, sea surface height, and hurricane behavior. Moreover, the benefits of this technology extend far beyond hurricane forecasting, with potential applications in oceanography, climate modeling, and even commercial shipping and offshore industries.
As we move into the 2025 hurricane season, all eyes will be on the performance of Sentinel-6B and its partner satellite. The data they collect will be closely watched by meteorologists, researchers, and industries that rely on accurate weather forecasts. Key areas to watch include the satellites' ability to track changes in ocean currents and sea surface height, and how these changes correlate with shifts in hurricane patterns. Additionally, the collaboration between NASA and its European partners serves as a model for future international cooperation in Earth observation, and it will be interesting to see how this partnership evolves and expands in the coming years.
Originally reported by phys.org. EngineeringNews adds analysis for science & discovery readers.