Equatorial ionospheric electrodynamic perturbations during Southern Hemisphere stratospheric warming events

摘要: [1] We use ground-based and satellite measurements to examine, for the first time, characteristics of equatorial electrodynamic perturbations measured during 2002 major 2010 minor Southern Hemisphere sudden stratospheric warming (SSW) events. Our data suggest occurrence enhanced quasi 2 day fluctuations early autumnal equinoctial warming. They also show a moderately large multi-day perturbation pattern, resembling those arctic SSW events, late equinox, as was weakening. We compare these with extensive recent results that showed fundamentally important role lunar semidiurnal tidal effects on low latitude