Modeling a space weather event from the Sun to the Earth: Magnetospheric Storm Results

Details Modeling a space weather event from the Sun to the Earth: Magnetospheric Storm Results Modeling a space weather event from the Sun to the Earth: Magnetospheric Storm Results

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....7651r&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #7651

Physics

Scientific paper

This papers shows magnetospheric results from one of the first ever Sun to Earth MHD simulations. The University of Michigan's BATSRUS MHD code was used to launch a Coronal Mass Ejection (CME) near the solar surface and simulate the propagation of the CME through interplanetary space. Because the CME was tracked using adaptive mesh refinement, the resolution within the shock was 1/8 of a solar radius (14 Earth radii, or R_e) at 1 AU. The CME had large field strengths (27 nT), densities (35 cm-3), and velocities (540 km/s) at 1 AU. Two dimensional results from the CME simulation at 1 AU were used to drive the magnetospheric simulation. This allowed gradients and correct propagation planes to be resolved at the upstream boundary. The magnetospheric simulation was run using a maximum resolution of 1/8 R_e at the inner boundary, which was set to 2.5 R_e, and a minimum resolution of 8 R_e near the side and outflow boundaries. The location of the dayside magnetopause was tracked over time as well latitude of the last closed field line. The strength of the auroral precipitation and cross polar cap were also investigated. The magnetospheric and ionospheric results from this simulation will be presented.

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