Meridional cuts of the eigenfunctions of the m = 10 HHS22 mode obtained from the linear analysis. The velocity, pressure, and vorticity eigenfunctions are expressed as ν(r, θ)exp[i(mϕ − ωt)], p₁(r, θ)exp[i(mϕ − ωt)], and ζ(r, θ)exp[i(mϕ − ωt)], and the solutions are shown in the meridional plane at t = 0 and ϕ = 0. The units of the colorbars are m s⁻¹ for three velocity components, 10⁴ dyn cm⁻² for the pressure perturbation, and 10⁻⁸ s⁻¹ for the vorticity components. The eigenfunctions are normalized such that the maximum of v_θ is 1.0 m s⁻¹. Panels (a–c) show the results from models 1–3, respectively. Note that the background entropy stratification is adiabatic in all cases. In panel (c), the black solid curves show the locations of the critical latitudes.