Fig. 4From: Planetary-scale MLT waves diagnosed through multi-station methods: a reviewComparison of wave amplitude of zonal wave number s=3 estimated using the ground-based WT & LS method with those estimated using the space-based MIGHTI observations. a the WT & LS estimations as a function of the day of year and period, b the MIGHTI estimation, and c and the scatter plot of the values sampled from a and b. This figure is adjusted from Fig. 3 in He et al. (2021a)Back to article page