05 Jan 2023
05 Jan 2023
Status: this preprint is open for discussion.

Electron radiation belt safety indices based on the SafeSpace modelling pipeline and dedicated to the internal charging risk

Nour Dahmen1, Antoine Brunet1, Sebastien Bourdarie1, Christos Katsavrias2, Guillerme Bernoux1, Stefanos Doulfis2, Afroditi Nasi2, Constantinos Papadimitriou2,3, Jesus Oliveros Fernandez4, and Ioannis Daglis2,5 Nour Dahmen et al.
  • 1ONERA/DPHY, Université de Toulouse, Toulouse, France
  • 2Department of Physics, National and Kapodistrian University of Athens, Athens, Greece
  • 3Space Applications and Research Consultancy, (SPARC), Athens, Greece
  • 4Thales Alenia Space, Spain
  • 5Hellenic Space Center, Athens, Greece

Abstract. In this paper, we present the SafeSpace prototype for a safety warning system, dedicated to the electron-radiation-belt induced internal charging hazard, aboard spacecraft. The space weather tool relies on a synergy of physical models associated in a chain that covers the whole Sun-interplanetary space-Earth's inner magnetosphere medium. With the propagation of uncertainties along the modelling pipeline, the safety prototype provides a global nowcast and forecast (within a 4-day lead time) of the electron radiation belt dynamic as well as tailored indicators for space industry operators. They are meant to inform the users about the severity of the electron space environment via a three colored alarm system, which sorts the indices intensity according to a representative historical distribution of in-situ data. The system was challenged over the St-Patrick 2015 storm in order to assess its performance. It showed overall good nowcasting and forecasting capabilities, due to its broad physics-driven pipeline.

Nour Dahmen et al.

Status: open (until 16 Mar 2023)

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Nour Dahmen et al.

Nour Dahmen et al.


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Short summary
Earth’s space environment is populated with charged particles. The energetic ones are trapped around Earth in radiation belts. Orbiting spacecrafts that cross their region can accumulate charges on their internal surfaces, leading to hazardous electrostatic discharges. This paper showcases the SafeSpace safety prototype, that aims at warning satellite operators of probable incoming hazardous events, by simulating the dynamics of the electron radiation belts from their origin at the Sun.