HR: 10:30h
AN: SM42A-01    [Abstracts]
TI: Validation of the Space Weather Modeling Framework for Northward IMF Conditions
AU: * Toth, G
EM: gtoth@umich.edu
AF: Center for Space Environment Modeling, University of Michigan, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Ridley, A J
EM: ridley@umich.edu
AF: Center for Space Environment Modeling, University of Michigan, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Oieroset, M
EM: oieroset@ssl.berkeley.edu
AF: Space Sciences Laboratory, University of California, Berkeley, Berkeley, CA 94720 United States
AU: De Zeeuw, D L
EM: darrens@umich.edu
AF: Center for Space Environment Modeling, University of Michigan, 2455 Hayward, Ann Arbor, MI 48109 United States
AU: Gombosi, T I
EM: tamas@umich.edu
AF: Center for Space Environment Modeling, University of Michigan, 2455 Hayward, Ann Arbor, MI 48109 United States
AB: We have simulated the magnetosphere and the ionosphere for an extended period of northward interplanetary magnetic field (IMF) conditions that occurred between 17:00 UT October 22 2003 and 00:00 UT October 24 2003. The Space Weather Modeling Framework (SWMF) is run with the coupled global magnetosphere (BATSRUS), inner magnetosphere (RCM) and ionosphere electro-dynamics (Ridley) components. The simulation results are compared with the magnetic field measurements of the GOES 10, GOES 12, Polar, Wind and Geotail satellites, and with the density, temperature, magnetic field and velocity measured by the Cluster satellites. We examine the effects of the grid resolution, Joule heating, resistivity, and coupling with the Inner Magnetosphere. It is found that the coupling with the RCM significantly improves the agreement between the observed and simulated magnetic fields near the Earth. In order to better match the far-tail Wind observations, resistivity needs to be added to the simulation. This indicates that the numerical resistivity in the code is most likely too low in the reconnection sites. In addition, it is shown that the amount of Joule heating in the reconnection site has a strong influence on the density and temperature of the plasma sheet. This series of simulations also serve as a validation of the SWMF.
DE: 2730 Magnetosphere--inner
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2740 Magnetospheric configuration and dynamics
DE: 2744 Magnetotail
DE: 2753 Numerical modeling
SC: SPA-Magnetospheric Physics [SM]
MN: 2005 Joint Assembly