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Fig. 4 | Earth, Planets and Space

Fig. 4

From: El Niño–Southern Oscillation effect on ionospheric tidal/SPW amplitude in 2007–2015 FORMOSAT-3/COSMIC observations

Fig. 4

Comparison of the components of a, d, g the TEC DW1, b, e, h DE3, and c, f, i SPW4 (red curve) amplitude anomaly to the wind DE3 amplitude anomaly (black curve) and F10.7 (blue curve) with periods ranging from a, b, c 0–12 months, d, e, f 12–24 months, g, h, i 24–48 months in the Northern Hemisphere. The components have been normalized within ± 1 for the comparison. No obvious agreement between the anomalies of the TEC DE3/SPW4 and wind DE3 in the Southern Hemisphere due to the weaker amplitude there (not show)

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