Real Time Radiation Belt Data Assimilation using DREAM

Details Real Time Radiation Belt Data Assimilation using DREAM Real Time Radiation Belt Data Assimilation using DREAM

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm51a1336h&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM51A-1336

Physics

[2730] Magnetospheric Physics / Magnetosphere: Inner, [2774] Magnetospheric Physics / Radiation Belts

Scientific paper

We present the first real-time version of the DREAM radiation belt data assimilation model. The model uses an "Ensemble Kalman Filter" to assimilate data in real time from inner magnetospheric spacecraft and computes Phase Space Density (PSD) as a functionof L* and time at contact first and second adiabatic invariants. Results using multiple pairs of first and second invariants are computed in order to recover flux versus energy along arbitrary spacecraft trajectories. The model can also be used to monitor the evolution of artificial electron injections and we show results using model inputs. We also present a visualization tool that can be used to examine the computed drift shells.

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