Long‐term radiation belt simulation with the VERB 3‐D code: Comparison with CRRES observations

摘要: [1] Highly energetic electrons in the Earth’s radiation belts are hazardous for satellite equipment. Fluxes of relativistic can vary by orders magnitude during geomagnetic storms. The evolution electron fluxes is described 3-D Fokker-Planck equation terms radial distance, energy, and equatorial pitch angle. To better understand mechanisms that control belt acceleration loss particle flux dynamics, we present a long-term simulation 100 days from 29 July to 6 November 1990 with Versatile Electron Radiation Belt (VERB) code compare results observed Combined Release Effects Satellite (CRRES). We also perform comparison Phase Space Density multisatellite reanalysis obtained using Kalman filtering observations CRRES, Geosynchronous (GEO), GPS, Akebono satellites. VERB simulations include radial, angle diffusion mixed energy driven electromagnetic waves inside magnetosphere losses atmosphere. Boundary conditions account convective source magnetopause. all above processes show good agreement data. implies these important dynamics therefore should be accounted outer simulations. very sensitive assumed wave model. Our only variation Kp index variations seed population around geosynchronous orbit, which allows model used forecasting nowcasting.