WINDMI is a low-dimensional model of the energy transfer from the solar wind through the magnetosphere and into the ionosphere. The model uses the analogy of electric circuitry (capacitances, resistances, inductances) to describe with a set of nonlinear ordinary differential equations the response of the magnetosphere-ionosphere system to solar wind driving. The electric driving voltage applied by the solar wind is described either by the Rectified (Reiff and Luhmann, 1986), Siscoe (Siscoe et al. 2002) or Newell (2007) coupling function (references in Spencer et al. 2009).
The model can be driven by ACE Real-Time or Level2 solar wind measurements over a few days and provides as outputs various magnetospheric and ionospheric parameters (region I and II currents, cross-polarcap voltages, ionospheric dissipation).
The major products of the model are the energy of the ring current (Dst index) and the AL index of geomagnetic activity.
- Magnetosphere / Global Magnetosphere
- Magnetosphere / Inner Magnetosphere / RingCurrent
Space Weather Impacts
- Geomagnetically induced currents - GICs (electric power systems)
- Horton, W., and I. Doxas (1998), A low-dimensional dynamical model for the solar wind driven geotail-ionosphere system, J. Geophys. Res., 103(A3), 4561-4572.
- Spencer, E., W. Horton, M. L. Mays, I. Doxas, and J. Kozyra (2007), Analysis of the 3-7 October 2000 and 15-24 April 2002 geomagnetic storms with an optimized nonlinear dynamical model, J. Geophys. Res., 112, A04S90, doi:10.1029/2006JA012019.
- Windell Horton, University of Texas (Model Contact)
- Lutz Rastaetter, NASA GSFC CCMC (CCMC Model Host)
In addition to any model-specific policy, please refer to the General Publication Policy.