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Anoni.  Why are balloons sent dozens of kilometers into the sky?

Anoni. Why are balloons sent dozens of kilometers into the sky?

Climate change, the origin of galaxies: strategic projects in progress

➤ Stratoll 2The program, developed in cooperation with the Dynamic Meteorology Laboratory of the National Center for Scientific Research, aims to study the formation and circulation of air masses in the tropical lower stratosphere. “Atmospheric exchanges occur particularly at the equator,” Vincent Dubourg recalls. This is the bowl of climate change. » The balloons launched in Seychelles orbit the Earth several times and document these air masses.

➤ “Today’s small weather balloons measure almost all greenhouse gases,” the engineer says. Cnes loose in Aire-sur-l’Adour (Landes). It complements satellite measurements on reference data.

➤ Cnes has a joint project with LAM (Laboratoire de Astrophysique de Marseille), Caltech (California Institute of Technology) and NASA entitled Fireball : “It is an ultraviolet telescope that monitors the birth of galaxies, by studying visible filaments in ultraviolet light. »

➤ Thales wants to develop a stratospheric balloon, “a huge balloon equipped with propellers capable of settling at an altitude of 20 kilometers.” It will serve as a “contact point” or “observation platform for the army.”

➤ Cnes is also working with Hemeria on a balloon that can stabilize to study a specific area in more detail.

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