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  1. ; ; (, Journal of Geophysical Research: Space Physics)
    Abstract We study the geomagnetic storm of 9 October 2012, where it had been generally accepted that the resulting prominent outer radiation belt electron acceleration throughout the storm is due to whistler‐mode chorus waves. This storm has been studied previously by two‐dimensional Fokker–Planck numerical simulations with data‐driven quasi‐linear (QL) diffusion rates. However, possible nonlinear (NL) resonant interaction effects on electron flux dynamics haven't been looked at yet. This study aims to fill this gap by demonstrating that theory‐informed rescaling of QL diffusion rates accounting for contributions of NL resonant interactions helps to reproduce better observed increase of electron fluxes by diffusion simulations. We use machine learning, uncertainty quantification (UQ), physics‐perturbed ensemble of VERB simulations and Van Allen Probes observations to identify optimal rescaling of quasi‐linear diffusion rates. 
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