HR: 1340h
AN: SM33B-1344    [Abstracts]
TI: Calculation of Synthetic Ground Magnetograms From Current Distributions Calculated by Large-Scale Magnetosphere-Ionosphere Coupling Codes
AU: * Ontiveros, P A
EM: paulonti@rice.edu
AF: Rice University, Department of Physics and Astronomy MS108 6100 Main Street, Houston, TX 77005, United States
AU: Toffoletto, F R
EM: toffo@rice.edu
AF: Rice University, Department of Physics and Astronomy MS108 6100 Main Street, Houston, TX 77005, United States
AU: Wolf, R A
EM: rawolf@rice.edu
AF: Rice University, Department of Physics and Astronomy MS108 6100 Main Street, Houston, TX 77005, United States
AU: Zhang, J
EM: jichunz@rice.edu
AF: Rice University, Department of Physics and Astronomy MS108 6100 Main Street, Houston, TX 77005, United States
AU: Ilie, R
EM: rilie@umich.edu
AF: University of Michigan, Department of Atmospheric, Oceanic and Space Sciences 2455 Hayward Street, Ann Arbor, MI 48109, United States
AU: Liemohn, M W
EM: liemohn@umich.edu
AF: University of Michigan, Department of Atmospheric, Oceanic and Space Sciences 2455 Hayward Street, Ann Arbor, MI 48109, United States
AB: Global MHD models, ring-current models, and convection models calculate the large-scale currents in the magnetosphere-ionosphere system. Traditionally, these models have been tested against single-point magnetic field measurements made by individual spacecraft, which often do not provide a clear picture of the pattern of model-data discrepancies. The global network of ground-based magnetometers constitutes a large source of data that is currently being underutilized for validation and analysis of these models. This is primarily due to the lack of a good code that accurately makes the connection between the model outputs and ground magnetometer data. We have developed a numerical algorithm to compute realistic ground magnetic field perturbations from these models. A generalized version of the software can be used with a wide variety of large-scale magnetosphere-ionosphere models. We show initial calculation results of Dst and UT-LT contour maps of low latitude magnetic perturbations for simulation results from one or more large-scale models.
DE: 2700 MAGNETOSPHERIC PHYSICS (6939)
DE: 2740 Magnetospheric configuration and dynamics
DE: 2753 Numerical modeling
DE: 7954 Magnetic storms (2788)
DE: 7959 Models
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting