Role of plasma sheet boundary conditions in simulations of severe geomagnetic storms with the Rice Convection Model

Details Role of plasma sheet boundary conditions in simulations of severe geomagnetic storms with the Rice Convection Model Role of plasma sheet boundary conditions in simulations of severe geomagnetic storms with the Rice Convection Model

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm11a1574s&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM11A-1574

Physics

7859 Transport Processes, 7954 Magnetic Storms (2788), 7959 Models

Scientific paper

Rice Convection Model (RCM) is a first-principles inner magnetospheric code that evolves the particle distribution function using electric fields computed self-consistently. In our most recent work, we have modified the model, which has served for several decades as a theoretical tool for investigating the physics of the inner magnetosphere, to the level of a prediction tool. As part of this work, we now have the ability to use different empirical plasma sheet models to specify plasma inflow boundary conditions on the high-L boundary. When a time-dependent magnetic field model and time variations of the plasma sheet moments are used as inputs to the model (both driven by solar wind and IMF parameters), the inner magnetosphere is found to undergo severe perturbations, including strong ring current injection, supersonic ionospheric plasma drifts, and highly structured interchange-driven transport of plasma sheet particles into the ring current region. In this paper, we use comprehensive simulations of the severe magnetic storms of March 31, 2001 and November 7-11, 2004 with the RCM, to quantify the role of different plasma boundary conditions on the storm-time ring current dynamics and the magnetosphere-ionosphere coupling.

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