Magnetospheric Magnetic Field Modeling

A quantitative model of the magnetospheric magnetic field and associated procedures for accurately cataloging charge particle data out to and beyond geosynchronous orbit is developed. The magnetic field model incorporates all major magnetospheric current systems and is valid for all tilt angles; i.e., angles of incidence of the solar wind on the dipole axis. The model accurately represents the total magnetospheric magnetic field for conditions of low magnetic activity and to a geocentric distance of 15 earth radii or to the magnetopause. A new (B, I) coordinate system is developed to more accurately organize charged particle data. The electric field produced by the daily varying tilt angle is computed.