OpenGGCM simulations of different types of storms with a coupled inner magnetosphere model.
Abstract
Geomagnetic storms are typically initiated by either Co-rotating Interaction Regions (CIRs) or Coronal Mass Ejections (CMEs). Since CMEs are essentially flux-ropes ejected from the sun, they are usually associated with a bipolar signature in the magnetic field as it passes by the spacecraft and Earth. The loading of mass and energy into the magnetosphere is different for the case where the IMF is first southward and then northward (SN-CME) compared to the case where the IMF is first northward then southward (NS-CME). In this presentation, we will show simulation results from a global magnetohydrodynamic model (OpenGGCM) coupled with the inner magnetosphere models (RCM and CRCM) for different types of storms (CIR, NS-CME, SN-CME). We will show the simulated DST and comment on the differences in ring current buildup and decay for the different cases.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2012
- Bibcode:
- 2012AGUFMSM41D..07G
- Keywords:
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- 2730 MAGNETOSPHERIC PHYSICS / Magnetosphere: inner;
- 2764 MAGNETOSPHERIC PHYSICS / Plasma sheet;
- 2778 MAGNETOSPHERIC PHYSICS / Ring current;
- 2784 MAGNETOSPHERIC PHYSICS / Solar wind/magnetosphere interactions