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Simulations Of Inner Magnetosphere Dynamics With An Expanded Ram-Scb Model And Comparisons With Van Allen Probes Observations, Vania K. Jordanova, Y. Yu, J. T. Niehof, R. M. Skoug, Geoffrey Reeves, C A. Kletzing, Joseph F. Fennell, Harlan E. Spence
Simulations Of Inner Magnetosphere Dynamics With An Expanded Ram-Scb Model And Comparisons With Van Allen Probes Observations, Vania K. Jordanova, Y. Yu, J. T. Niehof, R. M. Skoug, Geoffrey Reeves, C A. Kletzing, Joseph F. Fennell, Harlan E. Spence
Physics & Astronomy
Abstract
Simulations from our newly expanded ring current-atmosphere interactions model with self-consistent magnetic field (RAM-SCB), now valid out to 9 R E, are compared for the first time with Van Allen Probes observations. The expanded model reproduces the storm time ring current buildup due to the increased convection and inflow of plasma from the magnetotail. It matches Magnetic Electron Ion Spectrometer (MagEIS) observations of the trapped high-energy (>50 keV) ion flux; however, it underestimates the low-energy (<10 keV) Helium, Oxygen, Proton, and Electron (HOPE) observations. The dispersed injections of ring current ions observed with the Energetic particle, Composition, and Thermal plasma (ECT) suite at high (>20 keV) energy are better reproduced using a high-resolution convection model. In agreement with Electric and Magnetic Field Instrument Suite and …