Inner Radiation Belt Data Assimilation

Details Inner Radiation Belt Data Assimilation Inner Radiation Belt Data Assimilation

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm31b2104g&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM31B-2104

Physics

[2720] Magnetospheric Physics / Energetic Particles: Trapped, [2774] Magnetospheric Physics / Radiation Belts, [7984] Space Weather / Space Radiation Environment, Data Assimilation

Scientific paper

We present preliminary results of inner belt proton data assimilation using an augmented version of the Selesnick Inner Zone Model (SIZM). The physics-based model computes inner belt proton intensities as a function of time and of the three adiabatic invariants M, K, and L according to a comprehensive list of inner belt source and loss processes. We modify the model solution based on in-situ proton observations from SAMPEX/PET and HEO orbit and according to a data-assimilation method which exploits the non-Gaussian nature of inner belt proton intensities and Poisson or Gaussian counting statistics of the observations, as appropriate. We demonstrate the method by presenting data-assimilated inner belt proton intensities during a solar particle injection.

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