Radiation Belt Environment model: Application to space weather nowcasting

作者: Mei-Ching Fok , Richard B. Horne , Nigel P. Meredith , Sarah A. Glauert

DOI: 10.1029/2007JA012558

关键词: Van Allen radiation beltPlasmaspherePhysicsL-shellPitch angleNowcastingGeosynchronous orbitMagnetosphereMeteorologyComputational physicsSpace weather

摘要: [1] A data-driven physical model of the energetic electrons in Earth's radiation belts, called Radiation Belt Environment (RBE) model, has been developed to understand belt dynamics and predict conditions found there. This calculates electron fluxes from 10 keV 6 MeV inner magnetosphere. It takes into account realistic, time-varying magnetic field considers effects wave-particle interactions with whistler mode chorus waves. The storm on 23–27 October 2002 is simulated temporal evolutions radial pitch angle distributions are examined. calculated agree very well particle data low-orbit SAMPEX LANL geosynchronous satellites, when taken during recovery. Flux increases begin near plasmapause then diffuse outward higher L shells, consistent previous findings statistical studies. A simplified version RBE now running real time provide nowcasting environment. With further improvements refinements, this will have important value both scientific space weather applications.

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