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Bart van der Holst, Igor Sokolov, Ward Manchester, Gabor Toth, Darren de Zeeuq and Tamas Gombosi
Center for Space Environment Modeling, University of Michigan
SWMF IH outputThis model runs the Coronal and Inner Heliospheric components of the Space Weather Modeling Framework (SWMF) to produce a model of the ambient corona and inner heliosphere for the Carrington Rotation selected by the user.
The SWMF was developed by Gombosi et al at the University of Michigan, CSEM. Both components used here are based on the BATS-R-US MHD code which is a 3-dimensional block-adaptive Cartesian code.
For a detailed description of the SWMF and the 3D MHD codes used in these components see Toth et al, Journal of Geophysical Research, volume 110, A12226,(2005).
Both components use 3D cartesian grids. The coronal grid extends from -24 to +24 solar radii in each coordinate direction, excluding the body of the sun which is treated using a simplified cut-cell approach. The heliospheric component extends from -250 to +250 in each coordinate direction, excluding most of the region covered by the coronal grid. There is some overlap of the grids at their interface to support guardcell filling.
The coronal code iterates for 10000 timesteps until the coronal has settled into an equilibrium. (This may change as we study the number of iterations that the solar coronal component needs to converger). Some cases may not reach equilibium - the user should check the convergence plots provided with the output to confirm convergence to an equilibrium. Then the heliospheric component evolves a solution consistent with the coronal model, over 3000 iterations.
All other configuration parameters are pre-selected. The detailed specification of this configuration is determined by the PARAM.in file which we post along with the results. To interepret this file please refer to the model developers manuals.
The only input required from the user is to select the carrington rotation from the drop down menu.
All other configuration parameters are pre-selected. The detailed specification of this configuration is determined by the PARAM.in file which we post along with the results. To interepret this file please refer to the model developers manuals at http://csem.engin.umich.edu/swmf/documentation/HTML/SWMF/SWMF.html
Outputs include the MHD plasma parameters (atomic mass unit density N, pressure P, velocity V_x, V_y, V_z, magnetic field B_x, B_y, B_z, electric currents, J_x, J_y, J_z) . Description of derived variables can be found here.
Model Developers Manual