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ST4.2 Media

Extreme space weather scenarios
Co-Conveners: Nigel Meredith , Alan Thomson , Ahmed Hady , Christine Amory-Mazaudier , Valentina Zharkova , Nicola Scafetta 
Orals
 / Wed, 20 Apr, 08:30–10:00  / Room 0.88
Posters
 / Attendance Tue, 19 Apr, 17:30–19:00  / Hall X4
Many technological systems are at risk due to space weather. These systems include, for example, satellites, the power grid, communication and navigation networks, and aviation. Extreme space weather might represent a great hazard to those infrastructures. This session is intended to provide insights in the magnitude, duration and frequency of extreme events, including, but not limited to, the following:

• Solar energetic particle events (flux and fluence)
• Electron enhancement events
• X-ray and radio bursts
• Geomagnetic storms
• High-speed solar wind

Those scenarios should define the intensity, spectrum, and duration of the relevant physical parameter that we should expect for different periods: 25, 50, 100 or 200 years. The idea is that the system operator can use the scenario proposed for the period of interest to assess the risk to the system.