Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsa44a..07w&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SA44A-07
Physics
2427 Ionosphere/Atmosphere Interactions (0335), 2431 Ionosphere/Magnetosphere Interactions (2736), 2435 Ionospheric Disturbances, 2437 Ionospheric Dynamics
Scientific paper
The new version of the Coupled Magnetosphere-Ionosphere-Thermosphere (CMIT) model includes the National Center for Atmospheric Research (NCAR)-Thermosphere- Ionosphere-Electrodynamic Global Circulation Model (TIEGCM). This enables us to study the global ionospheric disturbance dynamo during geomagnetic storms. The CMIT model has been run to simulate the geospace response to the April 2004 geomagnetic storm. We investigate global neutral wind variations during the storm, changes and evolutions of the disturbance dynamo field induced by these variations, and their effects on global ionospheric F region electron densities. Several issues that will be addressed in this presentation are: how long does it take for the changes to propagate to the geomagnetic equator; and how long does it take for the dynamo to recovery after the main phase of the storm.
Burns Alan G.
Killeen Tim L.
Solomon Stanley C.
Wang Wenhong
Wiltberger Michael
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