Author(s)

Wambi Emmanuel Sawadogo¹, Frédéric Ouattara¹, Mahammat Nour Ali^1,2

¹Laboratoire de Recherche en Energétique et Météorologie de l’Espace (LAREME), Université Norbert Zongo (Anciennement Université de Koudougou), Koudougou, Burkina Faso.
²Faculté des Sciences Exactes Appliquées (FSEA), Université de Ndjamena, Ndjamena, Tchad.

The present paper deals with the effect of recurrent activity on the foF2 diurnal variation at Ouagadougou station for solar cycles 21 and 22. The recurrent activity produces at daytime positive storm for all solar cycle phases. For all seasons, the recurrent activity causes positive storm during nighttime and has no effect during daytime. From this study, it emerges that a positive effect of the storm at this station may be explained by the thermospheric composition changes. Recurrent activity more occurs during the solar decreasing phase and during spring month. The storm strength shows solar cycle phase and seasonal dependence. The storm strength is the highest during the solar increasing phase and during summer months.

Solar Wind High Speed Stream, Recurrent Activity, F2 Layer Critical Frequency, Solar Cycle Phases, Positive Storms

Sawadogo, W. , Ouattara, F. and Ali, M. (2019) The Effects of the Recurrent Storms on Fof2 at Ouagadougou Station during Solar Cycles 21-22. International Journal of Geosciences, 10, 80-90. doi: 10.4236/ijg.2019.101006.