Comparison of the proton bulk speed U_p between laminar (left column) and turbulent solar wind simulations (right column) at $t=250{\text{Ω}}_{\text{ci}}^{-1}$. We note that the color scale is linear for clarity, unlike in Figs. 2 and 3. The same format as that in Fig. 2 is used, with the color bar in units of Alfvén speed C_A, where white represents the solar-wind speed (U_sw = 10 C_A). We note that the bulk speeds are expressed in the planet’s reference frame here. Gray regions are those where the plasma density is smaller than 0.1n₀