Physics – Space Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm41a1101k&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SM41A-1101
Physics
Space Physics
2716 Energetic Particles, Precipitating, 2722 Forecasting, 2753 Numerical Modeling, 2788 Storms And Substorms
Scientific paper
The dynamic processes in the radiation belt, especially relativistic electron acceleration and transport, are not fully understood. Currently, neither data-based statistical models nor physics based models alone can capture all of the observed dynamics. Here, we combine the extensive observational data of energetic electrons in the inner magnetosphere with a physical model of transport processes in the radiation belt using the diffusion code Salammbo. Initial data comes from the LANL GEO and GPS constellation and Polar. Based on data assimilation methods of numerical weather prediction (nudging, Cressman analysis, successive correction method, Kalman filter), the information from measurements is propagated not only in time but also in space into so-called data voids or holes. We present here details and problems about data assimilation methods as applied to sparse space physics data and discuss the results we obtained.
Bourdarie Sebastien
Friedel Reiner H.
Koller Josef
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