Validating SWMF Particle Density and Energy: Initial Results

Details Validating SWMF Particle Density and Energy: Initial Results Validating SWMF Particle Density and Energy: Initial Results

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm43e..01w&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SM43E-01

Physics

0550 Model Verification And Validation, 2722 Forecasting (7924, 7964), 2730 Magnetosphere: Inner, 2753 Numerical Modeling

Scientific paper

First principle-based models can be a powerful tool for scientific and operational space weather forecasting and analysis. A key step for improving current models and preparing them for operational use is thorough data-model comparisons. Of particular interest is particle density and energy distribution in the magnetosphere, which are key values for spacecraft surface charging calculations. In this study, we compare particle density and energy spectrum values generated by the Space Weather Modeling Framework (SWMF) to in situ LANL geosynchronous measurements. The SWMF is configured to use a self-consistent ionospheric electrodynamics model, the BATSRUS global MHD model, and the Rice Convection Model (RCM). Coupling these models allows for tracing the magnetic field lines from the MHD solution to provide the RCM with an improved open/closed field line boundary. It also allows for the extraction of the RCM solution along any satellite trajectory by tracing the magnetic field line from the 3D location of the satellite to the 2D RCM ionospheric grid. The SWMF is further configured to run in near-real time on 32 Columbia SGI processors, creating a solution that better reflects the SWMF's capabilities in an operational environment. This study is an extension of previous work to validate the SWMF's modeled magnetic field.

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