Authors: G. Lu et al.
Affiliation: National Center for Atmospheric Research, High Altitude Observatory
The October-November 2003 geomagnetic storm was considered the third most powerful on record. A set of comprehensive data has been collected both from space and from ground to study this event. The Assimilative Mapping of Ionospheric Electrodynamics (AMIE) procedure is used to derive the "snapshot" maps of the large-scale ionospheric electrodynamic fields. The preliminary analysis of the data has indicated dramatic variations in the ionospheric electrodynamic system during the passage of the magnetic cloud, with AE going up to 3500 nT and Dst going down to -450 nT. Energy deposition in terms of auroral precipitation, Joule heating, and ring current injection will be estimated, and the variability of the energy inputs associated with geomagnetic activity as well as solar wind condition will also be examined.