Comparisons of 1D/SO17 and ID-hydro. (a): the surface density profiles. The H-He surface density is timed by the ice-to-gas ratio ƒ_i/g for a clear comparison. (b): the solid-to-gas ratio at the disk midplane and the vertically-integrated surface density ratio. The grey dashed line denotes snowline location (2.1 au). (c): the gas and pebble radial velocity at the disk midplane. It is worth noticing that the gas velocity in 1D/SO17 haven’t returned to the unperturbed viscous solution even at the outer boundary, giving rise to the difference of Σ_xy all over the place outside the snowline.