Detailed Sensitivity Analysis of Radiation Belt Models during High-Speed Solar Wind Streams

Details Detailed Sensitivity Analysis of Radiation Belt Models during High-Speed Solar Wind Streams Detailed Sensitivity Analysis of Radiation Belt Models during High-Speed Solar Wind Streams

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm13a1785c&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM13A-1785

Physics

[2722] Magnetospheric Physics / Forecasting, [2784] Magnetospheric Physics / Solar Wind/Magnetosphere Interactions

Scientific paper

Accurate and timely prediction of the charged particle environment in Earth's radiation belts requires computational models which incorporate the necessary physics while leaving out irrelevant dynamics. Therefore, when developing models of physical phenomena, an analysis must be made to facilitate the trade-off between precision and accuracy of results and computational speed/complexity. As a step toward this end, we present a detailed sensitivity study of the pitch angle and energy distribution of relativistic radiation belt electrons to a variety of parameters including electromagnetic wave characteristics, magnetic field models and atmospheric models as a function of the dynamic solar wind conditions during high-speed solar wind stream events. The lifetimes of anomalous initial distributions will be compared over a wide model parameter space to identify specific regimes which contribute to the majority of redistribution and loss of particles. This work will ultimately assist in model development for the Dynamic Radiation Environment Assimilation Model (DREAM), which is a data-assimilative model of Earth's radiation belt environment.

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