期刊
ANNALES GEOPHYSICAE
卷 30, 期 6, 页码 929-943出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/angeo-30-929-2012
关键词
Magnetospheric physics; Energetic particles, trapped; Storms and substorms; Space plasma physics; Numerical simulation studies
资金
- CNES RT program [4500036486/DCT094]
In this study we implement a data assimilation tool using a 3-D radiation belt model and an ensemble Kalman filter approach. High time and space reanalysis of the electron radiation belt fluxes is obtained over the time period 5 October to 25 October 1990 by combining sparse observations with the Salammb omicron 3-D model in an optimal way. The convergence of the ensemble Kalman filter is analyzed carefully. The risk of using a biased physical model is discussed and relative consequences are highlighted. Finally, a validation against CRRES data and major improvements compared to pure physics based model are presented.
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