Validating the SWAGE (Solar Wind Acting on the Geophysical Environment) Model Using Ground-based and Satellite Data

Details Validating the SWAGE (Solar Wind Acting on the Geophysical Environment) Model Using Ground-based and Satellite Data Validating the SWAGE (Solar Wind Acting on the Geophysical Environment) Model Using Ground-based and Satellite Data

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa51a1542r&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA51A-1542

Physics

2407 Auroral Ionosphere (2704), 2409 Current Systems (2721), 2415 Equatorial Ionosphere, 2431 Ionosphere/Magnetosphere Interactions (2736), 2447 Modeling And Forecasting

Scientific paper

In an earlier work [Rothwell and Jasperse, 2006] we derived the global ionospheric electric field produced by the Region-1 and Region-2 currents based on the ACE solar wind data. Despite the simplifying assumptions in that work of both the dipole and spin axis being aligned perpendicular to ecliptic plane we found significant agreement with Jicamarca vertical drift data, particularly during the November 2004 magnetic storm. Based on data availability, we will extend our comparisons using the recently launched C/NOFS satellite. Also, in order to extend the model to arbitrary geographic locations we now take into account 1) a non-spin-aligned magnetic dipole, as well as local IGRF modifications in the B-field, 2) a solar-driven ionospheric conductance model in GSE coordinates, well-defined near the terminators, and 3) the Region-1 and Region-2 currents defined in magnetic coordinates. As in the previous work, Region-1 and Region-2 currents are related, using the Hill-Siscoe transpolar potential model, to the solar wind data as measured at L1 by the ACE satellite. In this way, we intend to build a useful Space Weather Forecasting tool by which the time-dependent, solar- driven ionospheric electric field is defined at arbitrary geographic locations. Rothwell, P. L., and J. R. Jasperse(2006) Modeling the connection of the global ionospheric electric fields to the solar wind, J. Geophys. Res., 111, A3211, Doi:10.1029/2004JA010992.

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