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Seasonal TEC Variability in West Africa Equatorial Anomaly Region

Abstract : This paper presented the seasonal variability of TEC/ GPS data recorded at Ouagadougou a West Africa GPS station located near the magnetic equator. Seasonal data TEC time variations are compared to those of TEC derived from IGS GPS network maps. The present study showed that TEC map model predicts well data TEC during equinoctial months and fairly well during solstice months. The best prediction is obtained during spring and the worst during winter. The analysis of seasonal TEC profiles highlighted that model accuracy shows seasonal variations with respect to the complexity of TEC time variations. This work pointed out that model accuracy depends not only on the integration of station data in IGS GPS network data but also on the presence of daytime multi-peaks and/or the presence and the amplitude of night time peak. Solstice and summer data TEC analysis showed that those present F2 layer annual anomaly.
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  • HAL Id : hal-00968583, version 1


Christian Zoundi, Frédéric Ouattara, Rolland Fleury, Christine Amory-Mazaudier, Patrick Lassudrie-Duchesne. Seasonal TEC Variability in West Africa Equatorial Anomaly Region. European Journal of Scientific Research, EuroJournals, 2012, 77 (3), pp.309-319. ⟨hal-00968583⟩



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