Estimate of Global and Regional Distributions of Ionospheric Electrodynamic Quantities from EISCAT Radar and Ground Magnetometer Data.

Abstract

A new scheme is presentedto estimateboth global and localized distributions of ionospheric electric fields and currents by connecting two advanced magnetogram-inversion methods. It is demonstrated that a suitable combination of data from ground-based magnetometers and those from the EISCAT radar and polar orbiting satellites is able to provide us with valuable information on the electrodynamic properties in a localized area associated with substorm intensifications as well as on the global patterns of ionospheric convection. Along with the concept and the practical procedure of the new scheme, its capability in studying the substorm is addressed.