Daytime electron density at the F1-region in Europe during geomagnetic storms

D. Buresova (1) , J. Lastovicka (1) , D. Altadill (2) , G. Miro (3)

1 IAP - Institute of Atmospheric Physics [Prague]
2 OE - Observatori de l'Ebre
3 INTA/CEDEA Atmospheric Sounding Station ?El Arenosillo'

This study attempts to demonstrate changes in the ionospheric F1-region daytime ionization during geomagnetic storms. The F1-region is explored using available data from several European middle latitude and lower latitude observatories and a set of geomagnetic storms encompassing a range of seasons and solar activity levels. The results of analysis suggest systematic seasonal and partly latitudinal differences in the F1-region response to geomagnetic storm. The pattern of the response of the F1-region at higher middle latitudes, a decrease in electron density, does not depend on the type of response of the F2-region and on solar activity. A brief interpretation of these findings is presented.

Domaines: Océan, Atmosphère; Sciences de la Terre

D. Buresova, J. Lastovicka, D. Altadill, G. Miro. Daytime electron density at the F1-region in Europe during geomagnetic storms. Annales Geophysicae, 2002, 20 (7), pp.1007-1021. ⟨hal-00317082⟩