Spectral analysis of the WACCM-X meridional winds has been carried out for different days using fast Fourier transform (FFT) for a 24-hour window. Figure 4 shows the meridional winds obtained from the WACCM-X simulation (top panels), and the periodogram analysis (bottom panels) for the three representative nights shown in Figure 2. A residue of 14-hour running average has been considered to investigate the presence of periods smaller than 14 hours. The horizontal red solid lines in the bottom panels indicate a significance level of 80%. The nights used in Figure 4 show a reversal in meridional winds. The significant presence of higher-order tidal periodicities (6h, 8h, and 12h) can be noted on these nights, which motivated further investigations on assessing the contribution of these higher-order tides in the WACCM-X meridional winds.