Surname: Kombiyil First Name: Raj Status= studentyes Institution: Geophysical Institute, University of Alaska Fairbanks E-mail: ftrk@uaf.edu ---------------------------------------- Title: The Polar Ionosphere under conditions of Northward IMF: Numerical Modeling and comparison with data ---------------------------------------- Authors: R.Kombiyil B.J.Watkins S.A.Maurits ---------------------------------------- Abstract: A time dependent three dimensional model of the polar ionosphere has been run for conditions of northward IMF over an extended period (January 23,24;1998). The model results from the F region is used to study the associated ionospheric dynamics(UT effects etc.) over a spatial region for comparison with data from the Sondestrom ISR. These comparisons are used to validate the model for possible future space weather predicitve applications. ----------------------------------------