Imagine a future where we can predict severe storms with unprecedented accuracy, saving lives and livelihoods. That future is here, thanks to the European Space Agency’s (ESA) groundbreaking Meteosat Third Generation Sounder (MTG-S). But here’s where it gets controversial: while this technology promises to revolutionize weather forecasting, it also raises questions about data accessibility and global collaboration. Are we doing enough to ensure all nations benefit equally from these advancements?
ESA has just unveiled the first images from MTG-S, a satellite designed to usher in a new era of Earth observations. Equipped with a state-of-the-art infrared sounder, this mission captures hyperspectral data of the atmosphere—a first for Europe in geostationary orbit. This “completely new” data product acts like an interferometer, analyzing light waves to measure temperature, humidity, wind, and trace gases. The ultimate goal? To create 3D atmospheric maps that could transform how we forecast fast-moving storms. As Simonetta Cheli, ESA’s Director of Earth Observation programs, puts it, ‘This is very exciting for communities, citizens, meteorologists, and climatologists alike.’
MTG-S also features an ultraviolet, visible, and near-infrared imaging spectrometer, complementing the Copernicus Sentinel-4 mission, which shared its first images last year. Launched on July 1, 2025, MTG-S follows the December 2022 launch of its counterpart, the imager MTG-I, with a second imager expected in 2026. This ambitious project is a collaboration among Thales Alenia Space (prime contractor), OHB Systems (MTG-S lead), and Eumetsat (mission control and data distribution).
And this is the part most people miss: Canada, an associate member of ESA, is playing a significant role in this mission. With a recent contribution of €407.7 million (~CAD $664.6 million) to ESA’s record €22.3 billion budget, Canada’s commitment is ‘four times as much’ as before, according to ESA Director General Josef Aschbacher. This investment grants the Canadian Space Agency (CSA) greater access to ESA programs, including potential collaborations with MTG-S. While Canada boasts its own Earth observation satellites, like RADARSAT-2 and the RADARSAT Constellation Mission, MTG-S’s unique wavelength capabilities could enhance these efforts.
The first images from MTG-S, captured on November 15, 2025, are nothing short of breathtaking. From a geostationary altitude of 36,000 km, the satellite revealed Earth’s full disc with stunning clarity. Highlights include:
- Temperature maps in infrared, showcasing the warmest regions (dark red) in Africa and South America, contrasted with cooler cloudtops (blue).
- Humidity images in medium-wave infrared, where blue indicates high humidity (e.g., high latitudes and eastern Africa) and red shows low humidity (like the Sahara Desert).
- Volcanic eruption tracking of Ethiopia’s Hayli Gubbi volcano, which erupted on November 23. The satellite’s infrared channels highlighted the ash plume’s development, while background imagery tracked surface temperature changes. ESA’s animation of this event demonstrates the satellite’s ability to monitor evolving natural disasters in real time.
But here’s the thought-provoking question: As we celebrate these technological leaps, how do we ensure equitable access to this life-saving data? Should countries like Canada, with significant investments, have priority access, or should this data be shared globally without restrictions? Let’s discuss in the comments—your perspective matters!
Elizabeth Howell, SpaceQ’s Associate Editor and a seasoned science and business reporter, holds a Ph.D. from the University of North Dakota and teaches communications at Algonquin College. For more of her insights, visit her author page.
