P2SC News

Release of a new LYRA product: O+N₂ Earth atmosphere number densities

Tue, 10/03/2017 - 10:07 — Marie Dominique

The PROBA2 team is happy to announce the release of a new data product: the Earth atmosphere O+N₂ number density profiles. These profiles are derived from solar occultation measurements by LYRA and are available at /lyra/data/EarthAtmosphere/. They are produced daily from beginning of December till end of January and are based on the backup unit (unit 3) measurements to limit the impact of instrumental degradation.

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LYRA observes a strong solar flare in its Herzberg channel!

Thu, 09/07/2017 - 12:25 — Elke D'Huys

Big news in solar physics land: the sun produced a series of strong solar flares in the past week. On September 6, 2017, an X9.3 flare occurred in NOAA AR 12673 around 12:00 UT and was preceded by many other significant flares, including an X2.2 flare around 09:00 UT. (Learn more about solar flares and their classification here.) Another strong X-class flare was observed a few days later: on September 10 the same active region produced an X8.2 flare around 16:00 UT.