Fig. 4From: Investigation of dominant traveling 10-day wave components using long-term MERRA-2 databaseThe normalized frequency–wavenumber spectra of the zonal wind disturbance at 47.5°S and ~ 42 km in September 11–30 (left) and at 52.5°S and ~ 58 km in June 2–21 (right). The minimum and interval of the contours are 0.15 and 0.2, respectivelyBack to article page