Using Global MHD Simulations and Cluster II Observations to Investigate the Dynamics of the Dayside Magnetosphere

Details Using Global MHD Simulations and Cluster II Observations to Investigate the Dynamics of the Dayside Magnetosphere Using Global MHD Simulations and Cluster II Observations to Investigate the Dynamics of the Dayside Magnetosphere

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm22a0806b&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM22A-0806

Physics

2724 Magnetopause, Cusp, And Boundary Layers, 2740 Magnetospheric Configuration And Dynamics, 2753 Numerical Modeling, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

Numerous studies carried out by the International Solar Terrestrial Physics program have demonstrated that global magnetohydrodynamic (MHD) simulations are invaluable for linking measurements made by multi-spacecraft missions. Although the multi-point measurements from Cluster can provide information on a finer scale than that resolvable by MHD models, global simulations can be used to establish causal relationships between local measurements and the global dynamics of the magnetosphere. We present the results of several studies based on recent Cluster passes through the dayside magnetopause and the cusp. These case studies use magnetic field and plasma parameters measured upstream of the bow shock as input to the simulations and include both typical and extreme solar wind conditions. We demonstrate how comparing local data streams from the simulations with time series measured by the Cluster spacecraft provide information to reconstruct the global topology and dynamics of the dayside magnetosphere during the events.

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