Brief Description:
The model provides a description of the magnetospheric electric field at
ionospheric altitudes. It uses a set of simple functions that are dependent on
Kp and Interplanetary Magnetic Field (IMF) Bx, By, and Bz components. The
functions and empirical relations are based on previous models (Heelis,
Volland) and on satellite and incoherent scatter radar observations. The Kp
index controls the cross-tail potential, the diameter of the polar cap, and
the extent of the equatorial fall-off region. For southward IMF the model
field depends only on IMF By. For northward IMF, a pair of extra convection
cells exists inside the polar cap.
Availability: FORTRAN program may be available from the authors.
References:
J. J. Sojka, C. E. Rasmussen, and R. W. Schunk, An Interplanetary Magnetic
Field Dependent Model of the Ionospheric Convection Electric Field, J.
Geophys. Res. 91, 11281, 1986.
Go to the Ionospheric Models index Go to the Model Web Models home page