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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Thermospheric inter-annual variability and its potential connection to ENSO and stratospheric QBO

Fig. 4

The wavelet coherence between the density residual at 400 km altitude and Nino3 index (upper) and between the density residual and QBO index (bottom). Thick contours enclose regions of greater than 95 % significance level. The arrows indicate the relative phase relationship between the time series, right in-phase; left anti-phase; down Nino3/QBO leading \(\Delta \rho\) by 90\(^\circ\); up \(\Delta \rho\) leading Nino3/QBO by 90\(^\circ\)

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