From research to industry
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation.
Discover the main research areas on which the CEA works.
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The CEA publishes various scientific and technical periodicals and videos. Through them, you can discover the CEA’s major research topics and the latest technological innovations produced by its laboratories.
News | European ＆ international partnerships | Newsletter | Environment | Climate | Earthquakes ＆ tsunamis | Monitoring nuclear tests | Security and non-proliferation | Earth sciences
The infrasound technology, that was first designed and used for nuclear test monitoring, now provides crucial information to characterize the atmospheric waves of natural origin and predicts their impact on meteorology for improving future weather forecasting up to several weeks. ARISE 2 monitors the stratosphere, listening to very low-frequency sound waves generated by loud sources, such as ocean waves, volcanic eruptions, supersonic aircrafts and man-made explosions.
First multi-instrument comparisons during observations campaigns demonstrated significant differences between models and observations especially during stratospheric warming events. Such multi-instrument observations are relevant for improving the representation of stratospheric dynamics in models. ARISE 2 measurements are also used to improve the representation of gravity waves in stratosphere-resolving climate models, crucial to estimating the impact of a range of stratospheric climate forcing on the troposphere. In the next project steps, data will be assimilated in
models for a better accuracy in future medium-range weather forecasts. In the long term, the data will be used for monitoring of middle atmosphere climate, its long-term mean trends and changes in extreme events.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.