Comparison of LFM Simulation With Tsyganenko Models and GOES Observations

Details Comparison of LFM Simulation With Tsyganenko Models and GOES Observations Comparison of LFM Simulation With Tsyganenko Models and GOES Observations

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm52a0569h&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SM52A-0569

Physics

2730 Magnetosphere: Inner, 2740 Magnetospheric Configuration And Dynamics, 2753 Numerical Modeling, 2778 Ring Current, 2788 Storms And Substorms

Scientific paper

The physics-based Lyon-Fedder-Mobarry (LFM) model simulates magnetospheric configuration and dynamics, but observational comparisons are needed because they can reveal possible limitations of the model and suggest ways for improvements. Here we present a study that compares the global LFM MHD simulation to two semi-empirical magnetic field models (Tsyganenko 1996 and 2001) and geosynchronous magnetic field measurements from GOES 8, 9 and 10 during storm conditions. Typical magnetic cloud events and moderate storms between 1997 and 2001 were examined. The quantitative comparison of the simulation and model predictions with observations shows very good agreement except during large storm main phases (Dst < -100 nT) and typically on the night side, where the MHD simulation does not have sufficient ring current and the empirical models are poorly constrained.

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