Ionospheric Electrodynamics: Climatology and Weather

Dr. Bela G. Fejer
Center for Atmospheric and Space Sciences
Utah State University

Ionospheric electric fields and plasma drifts play fundamental roles on the plasma distribution and dynamics, and on the generation of plasma instabilities which can significantly affect communication, navigation and surveillance systems. Ionospheric electric fields result from the dynamo action of upper atmospheric winds driven by solar and lunar tides and, during magnetic storms, also from solar wind driven magnetospheric dynamo effects. In this talk, I will concentrate on satellite and radar studies of middle and low latitude ionospheric electric fields and electrodynamic (ExB) plasma drifts which have been the focus of recent space weather research.