Resumen de Ionospheric F2-layer storms = Tormentas de la capa F2 ionosférica
Morphology of midlatitude and equatorial F2-layer storms as wel1 as recent publications on storm mechanisms are summarized. Ground-based ionosonde, incoherent scatter and satellite observations are used to specify the processes responsible for the observed F2-layer storm effects. The interaction of background (solar-driven) and storm-induced (due to high-latitude energy inputs) thermospheric circulation patterns may be considered as the principal mechanism explaining the main features of the midlatitude F2-layer storm effects. Vertical ExB plasma drifts are responsible for main NmF2 perturbations in the equatorial F2-region
