Authors: Joachim Raeder Douglas Larson Wenhui Li Emil L Kepko Timothy FullerRowell
Publish Date: 2008/09/12
Volume: 141, Issue: 1-4, Pages: 535-555
Abstract
The THEMIS mission provides unprecedented multipoint observations of the magnetosphere in conjunction with an equally unprecedented dense network of ground measurements However coverage of the magnetosphere is still sparse In order to tie together the THEMIS observations and to understand the data better we will use the Open Geospace General Circulation Model OpenGGCM a global model of the magnetosphereionosphere system OpenGGCM solves the magnetohydrodynamic MHD equations in the outer magnetosphere and couples via field aligned current FAC electric potential and electron precipitation to a ionosphere potential solver and the Coupled Thermosphere Ionosphere Model CTIM The OpenGGCM thus provides a global comprehensive view of the magnetosphereionosphere system An OpenGGCM simulation of one of the first substorms observed by THEMIS on 23 March 2007 shows that the OpenGGCM reproduces the observed substorm signatures very well thus laying the groundwork for future use of the OpenGGCM to aid in understanding THEMIS data and ultimately contributing to a comprehensive model of the substorm process
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