Eigenfunctions of the equatorial Rossby mode with no radial node (n = 0) for m = 2. (a) Meridional eigenfunctions extracted from the simulation (lower panels) and those obtained from the linear analysis (upper panels). The same notation is used as in Fig. 6a. (b) Radial eigenfunction of v_θ at the equator. The black solid and red dashed lines show the results from the simulation and linear calculation, respectively. (c) Latitudinal eigenfunction of v_θ in the middle convection zone.