Coupling HEIDI into the SWMF

Details Coupling HEIDI into the SWMF Coupling HEIDI into the SWMF

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm11a1546i&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM11A-1546

Physics

[2730] Magnetospheric Physics / Magnetosphere: Inner, [2753] Magnetospheric Physics / Numerical Modeling, [2778] Magnetospheric Physics / Ring Current

Scientific paper

In this study we will present results from the Hot Electron and Ion Drift Integrator (HEIDI) model, which has been recently coupled into the Space Weather Modeling Framework (SWMF). HEIDI solves the time dependent, gyration and bounced averaged kinetic equation for the phase space density of different ring current species. An advantage of using HEIDI is that it computes full pitch angle distributions for all local times and radial distances. The largest modification and improvement to HEIDI is the inclusion of a non-dipolar, time dependent magnetic field. The bounce-averaged coefficients, which make up the bounce-averaged kinetic equation, have been rewritten to account for an arbitrary magnetic field. The gradient/curvature drift includes both azimuthal and radial components. Moreover, arbitrary grid sizes in radial, azimuthal, energy and pitch angle are allowed. HEIDI receives full and realistic magnetic field distributions from BATSRUS and the electric potential from the ionospheric electrodynamics model, through couplers within SWMF. Preliminary results of the self-consistent coupling between HEIDI and BATSRUS during idealized and realistically drive time-periods will be presented.

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