Figure 7
From: Observation of near-inertial waves in the wake of four typhoons in the northern South China Sea

Rotary vertical wavenumber difference between clockwise and counterclockwise components and time-averaged rotary vertical wavenumber spectra during the passage of typhoons (a,b) Bebinca, (c,d) Barijat and Mangkhut, and (e,f) Yutu. The blue and orange solid lines represent the time-averaged counterclockwise and clockwise rotary components, respectively. cpm stands for “cycles per meter”.