Modeling the Continuous Ionosphere - Thermosphere - Magnetosphere System with the Integrated Space Weather Prediction Model (ISM)
Abstract
Historically, global models of the magnetosphere and ionosphere/thermosphere have operated in isolation, with each type of model treating the other region as a boundary condition. In recent years, existing stand-alone models have been linked together to create models that cover the entire ionosphere-thermosphere-magnetosphere (I-T-M) system. Unlike these models, the Integrated Space Weather Prediction Model (ISM) is a global first-principles two-material MHD model of the entire I-T-M system with no boundaries between the different regions. The two-material MHD equations, complete with the full Ohm's law including the Hall terms, provide self-consistent electromagnetic and material coupling throughout the ISM computational domain which extends from 40 earth radii (R e) sunward of the earth to 300 R e tailward, and down to a lower ionospheric boundary at approximately 100 km altitude. We describe the model and use currents, electric fields, and ion and neutral velocities to illustrate the I-T-M coupling that is inherent in ISM.
- Publication:
-
AGU Spring Meeting Abstracts
- Pub Date:
- May 2004
- Bibcode:
- 2004AGUSMSA32A..05W
- Keywords:
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- 2427 Ionosphere/atmosphere interactions (0335);
- 2431 Ionosphere/magnetosphere interactions (2736);
- 2437 Ionospheric dynamics;
- 2736 Magnetosphere/ionosphere interactions;
- 2753 Numerical modeling