Evaluating the Accuracy of Plasmasphere Data Assimilation from Ground-Based Observations SM23C-2328 VLF and magnetometer observations can be used to remotely sense the plasmasphere. VLF whistler waves can be used to measure the electron density and magnetic Field Line Resonance (FLR) measurements can be used to measure the mass density. In principle it is then possible to remotely map the plasmasphere with a network of ground-based stations which are also less expensive and more permanent than satellites. The PLASMON project, funded by the EU FP-7 program, is in the process of doing just this. A large number of ground-based observations will be input into a data assimilative framework which models the plasmasphere structure and dynamics. The data assimilation framework combines the Ensemble Kalman Filter with the Dynamic Global Core Plasma Model. Here we simulate the observations from these networks, with appropriate uncertainties, and use them to drive the data assimilation framework to recover the plasmaspheric configuration. We will discuss the level of accuracy that can be achieved.
Anders M Jorgensen1, Janos Lichtenberger2, Jared Duffy1, Reiner H Friedel3, Mark Clilverd4, Balazs Heilig5, Massimo Vallante6, Jyrki K Manninen7, Craig J Rodger8, Andrew Collier9, Jan Reda10, Robert H Holzworth11, Daniel M Ober12, Athanasios Boudouridis13, Eftyhia Zesta12, Peter J Chi14 1. New Mexico Tech, Socorro, NM, USA; 2. EOTVOS LORAND TUDOMANYEGYETEM, Budapest, Hungary; 3. Los Alamos National Laboratory, Los Alamos, NM, USA; 4. British Antarctic Survey, Cambridge, United Kingdom; 5. MAGYAR ALLAMI EOTVOS LORAND GEOFIZIKAI INTEZET, Budapest, Hungary; 6. University of L’Aquilla, L’Aquilla, Italy; 7. University of Oulu, Oulu, Finland; 8. University of Otago, Dunedin, New Zealand; 9. Sansa Space Science, Hermanus, South Africa; 10. Institute of Geophysics, Polish Academy of Science, Warszawa, Poland; 11. University of Washington, Seattle, WA, USA; 12. Air Force Research Laboratory, Albuquerque, NM, USA; 13. Space Science Institute, Boulder, CO, USA; 14. University of California Los Angeles, Los Angeles, CA, USA