Present Status and Ongoing Developments of the Heliospheric Code ENLIL

Coronal mass ejections (CMEs) represent a prime causal link between solar activity and large, non-recurrent geomagnetic storms. Modeling of the origin of CMEs is still in the research phases and it is not expected that real events can be routinely simulated in near future. We developed a modeling system which uses the empirical (WSA), numerical (MAS), or reconstructed (UCSD) coronal model maps, fits coronagraph observations, specifies 3D ejecta, and drives the 3D numerical magnetohydrodynamic (MHD) code ENLIL. We will overview properties and limitations of the this modeling system and illustrate ongoing developments. Attention will be given to multi-spacecraft validations, high resolution of interplanetary shocks, more realistic ejecta, predicting Bz, and ensemble modeling.