Simulation of the Halloween 2003 and April 2002 Magnetic Storms
Abstract
We examine two large magnetic storms, the events of Halloween 2003 and the April 2002, through numerical simulation. We have performed high resolution simulations of these events using the Lyon-Fedder-Mobarry (LFM) global MHD code. ACE solar wind field and plasma observations will be used for the simulations. However, the Halloween 2003 event will be driven using our synthesis of the ACE and GEOTAIL plasma data, which was shown in the last meeting to best agree with the magnetospheric observations. We will compare the activity of the storms in the simulations, focusing on strongly driven periods in which sawtooth activity has been observed. We will examine closely the plasma and magnetic field configurations in the inner magnetosphere to identify the possible presence of such sawtooth activity in the simulations, comparing our results with the available magnetospheric and ionospheric observations. We plan to compare these results with those from the CMIT model, in which the ionosphere of the LFM is replaced by the NCAR Thermosphere Ionosphere Nested Grid (TING). [This work is supported by NSF grant ATM-0120950].
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2005
- Bibcode:
- 2005AGUSMSA13A..14G
- Keywords:
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- 2700 MAGNETOSPHERIC PHYSICS;
- 2730 Magnetosphere: inner;
- 2788 Storms and substorms