Structure of a 3D Rossby vortex. From top to bottom the various rows show the fields (where the stable equilibrium state has been removed) of density, pressure, axial vorticity, radial velocity, azimuthal velocity, and vertical velocity. The left column shows these values in the r − θ plane at z = 0 except for the vertical velocity (last row), which is at z = 0.5. The right column shows the vertical profiles of the same values in the r − z plane at θ = 2.67; radial velocity (fourth row) and vertical velocity (last row) are plotted in the θ − z plane at r = 8.