Based on the above discussion, the hourly meridional winds from WACCM-X are used to estimate the amplitudes of different tidal components for the periodicities at which the FFT analysis showed significant power using the least square fitting method (Venkateswara Rao et al., 2011; Pancheva et al., 2021). We have used the variation of meridional winds simulated by WACCM-X for all the longitudes with a cadence of 2.5o and the latitude has been taken 23.68o, very close to the observation location. Then, the least square fitting has been performed using the following equation: