At 9:21 p.m. PST on November 16, the Sentinel-6B, which is roughly the size of a full-size pickup truck, took off on a SpaceX Falcon 9 rocket from Launch Complex 4 East at Vandenberg Space Force Base in central California. At 10:54 p.m., approximately 1.5 hours later, the ground station in Northern Canada established communication with the satellite. According to reports, every system is operating as it should. “Knowing tidal patterns down to the inch is critical in protecting how we use our oceans every day on Earth,” said Nicky Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington.
By measuring sea level, Sentinel-6B will continue the legacy of Sentinel-6 Michael Freilich by improving forecasts utilized by businesses, communities, and operations nationwide. Additionally, it will facilitate a safer return home for our astronauts, especially crew from Artemis Moon missions,” he continued. Even though sea levels naturally vary from place to place due to the satellite’s position in low Earth orbit, hundreds of miles above the ground, it will monitor sea levels accurately on both local and global scales. Sentinel-6B will replace Sentinel-6 Michael Freilich, which launched in 2020 and went on to become the official reference satellite for sea level measurements worldwide. Sentinel-6B provides measurements of sea surface height that are used to compare the accuracy of data from other satellites.
As part of the EU’s Copernicus programs, NASA, the European Space Agency (ESA), the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT), and the National Oceanic and Atmospheric Administration (NOAA) worked together to develop the Sentinel-6B satellite. It seeks to supply vital information on ocean health and climate change by tracking the Sentinel-6 Michael Freilich satellite. For operations like Sentinel-6, cooperation is essential. This accomplishment demonstrates the effectiveness of international collaborations in tackling global issues. According to Simonetta Cheli of ESA, “Sentinel-6B will collect data on wind speeds, wave heights, temperature, and humidity, which can aid in marine weather forecasting and understanding ocean dynamics.”
The Copernicus Sentinel-6/Jason-CS (Continuity of Service) mission is the most recent of several ocean-observing radar altimetry programs that have been monitoring Earth’s changing seas since the early 1990s. It consists of two satellites. Similar to its predecessor, Sentinel-6B will monitor humidity, temperature, wind speed, and wave height. Researchers can forecast marine weather and storm development by identifying warmer ocean regions through the analysis of sea surface height fluctuations. Measurements of the sea surface also show how currents, such the Gulf Stream, interact with nearby waves to produce choppy waters that might endanger big ships. The director of NASA’s Earth Science Division, Karen St. Germain, highlighted the satellite’s function in supplying vital data for shipping, emergency response, and coastal communities.
“Ocean surface observations gathered by Sentinel-6B will help make decisions that are vital to coastal communities, commercial shipping and fishing, national defense, and emergency preparedness and response.” This is what NASA does, he said: it applies cutting-edge science and technology for the good of the country. Sentinel-6B will fly roughly 30 seconds behind Sentinel-6 Michael Freilich, which is equipped with the same scientific instruments, when it reaches its working elevation. Sentinel-6 Michael Freilich will move into a new orbit and Sentinel-6B will assume the role of the official reference satellite after the mission has completed cross-calibrating the data gathered by the two. Sentinel-6B will orbit the Earth roughly 13 times a day at a height of 830 miles (1,336 kilometers) above the surface.
The satellite’s cutting-edge technology can measure 90% of Earth’s oceans with accuracy down to fractions of an inch, adding to a vital dataset for international stakeholders, according to Dave Gallagher, director of NASA’s Jet Propulsion Laboratory (JPL) in Southern California.
