Latitude–pressure maps of experiments V with non-uniform ﹩{\chi }_{0}﹩. First row: vertical winds (color) and mass streamfunctions (contours, in units of ﹩{10}^{13}\,\mathrm{Kg}\,{{\rm{s}}}^{-1}﹩). Starting from the second row, we show volume mixing ratio maps of tracers with chemical timescales of 10⁷ s, 10⁸ s, 10⁹ s, and 10¹⁰ s from top to the bottom, respectively.