Event Title

Large-Scale Kinetic Simulations of Geomagnetic Storms with Realistic Ionospheric Ion Outflow Models

Location

Yosemite National Park

Start Date

2-12-2014 4:40 PM

End Date

2-12-2014 5:10 PM

Description

During the last several years, we have investigated the access and energization of ionospheric ions as well as the entry and acceleration of solar wind ions in the magnetotail during geomagnetic storms. For each of the storms studied, we ran a global magnetohydrodynamic (MHD) simulation of the event using upstream solar wind and IMF data. We then launched ions originating from the solar wind and from the ionosphere in the global, time-dependent electric and magnetic fields obtained from the MHD simulation of the event. We present results from storms driven by coronal mass ejections (CMEs) and by corotating interaction regions (CIRs) and high-speed streams (HSS). We compare ion densities in the magnetotail, the geoeffectiveness of ion outflows, and the modulation of ion outflow on ion densities in the magnetotail.

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Feb 12th, 4:40 PM Feb 12th, 5:10 PM

Large-Scale Kinetic Simulations of Geomagnetic Storms with Realistic Ionospheric Ion Outflow Models

Yosemite National Park

During the last several years, we have investigated the access and energization of ionospheric ions as well as the entry and acceleration of solar wind ions in the magnetotail during geomagnetic storms. For each of the storms studied, we ran a global magnetohydrodynamic (MHD) simulation of the event using upstream solar wind and IMF data. We then launched ions originating from the solar wind and from the ionosphere in the global, time-dependent electric and magnetic fields obtained from the MHD simulation of the event. We present results from storms driven by coronal mass ejections (CMEs) and by corotating interaction regions (CIRs) and high-speed streams (HSS). We compare ion densities in the magnetotail, the geoeffectiveness of ion outflows, and the modulation of ion outflow on ion densities in the magnetotail.