NARX Neural Network Derivations of the Outer Boundary Radiation Belt Electron Flux

Electron Lifetimes in the Outer Radiation Belt

3 Data assimilation aims to smoothly blend incomplete and inaccurate ob-4 servational data with dynamical information from a physical model, and be-5 come an increasingly important tool in understanding and predicting me-6 teorological, oceanographic and climate processes. As space-borne observa-7 tions become more plentiful and space-physics models more sophisticated, 8 dynamical processes in ...

Structure of Earth’s outer radiation belt inferred from long-term electron flux dynamics

[1] We map the spatial structure of the electron belts over their radial range (L = 1–11 RE) using a total of 25 years of observations by NASA, ISAS, and GPS spacecraft. Correlation analysis reveals significant radial structuring of the outer belt and identifies three regions, while earlier single-spacecraft studies are used to interpret the results. The central region P1 (L = 4.1–7.5 RE) has a...

Mapping Jupiter's outer radiation belt

Flux maps of energetic ions in Jupiter's outer radiation belt, calculated with the aid of a model of the current sheet magnetic field, are consistent with a spatial distribution that is uniform along field lines and monotonically decreasing with radial distance. This result is supported by numerical ion trajectory calculations that predict uniform filling of drift shells at high L values. Adiab...

Optimal Estimation of Relativistic Electron Lifetimes in the Outer Radiation Belt

Global storm time depletion of the outer electron belt

The outer radiation belt consists of relativistic (>0.5 MeV) electrons trapped on closed trajectories around Earth where the magnetic field is nearly dipolar. During increased geomagnetic activity, electron intensities in the belt can vary by orders of magnitude at different spatial and temporal scales. The main phase of geomagnetic storms often produces deep depletions of electron intensities ...