Ionospheric response to High- Intensity long duration continuous AE activity events during CIR-driven storms recovery phase



High intensity long duration continuous AE activity (HILDCAA) events mainly occur outside the main phase of Corotating Interaction Region (CIR) -driven geomagnetic storms. The behaviour of the Ionosphere during HILDCAA events will be statistically studied using Global Navigation Satellite System (GNSS) Total Electron Content (TEC) and Digisonde data over the African region.