“…In other words, anti-cyclonic eddies may have greater influences on RTI than cyclonic eddies in the real ocean, especially for regions where strong IT beams are generated. In addition, the vertical structure of mesoscale eddies may modulate RTI in another way: the baroclinic mesoscale eddies provide background vertical shear, that is, horizontal vorticity, which could change the vertical group velocity of the near-inertial waves (Buyn et al, 2010;Kunze, 1985;Schlosser et al, 2019). Nevertheless, compared with the impact of relative vorticity, the impact of baroclinicity of background currents is indeed poorly understood.…”