Comparison of the Rosseland mean opacity per gram of dust, dust-to-gas ratio ϵ, and Rosseland mean opacity per gram of protoplanetary disk material κ_R for our fiducial 2D disk-integrated model and 3D disk model after 1 Myr of evolution. We plot the values of these quantities in the disk midplane (z = 0), a single gas scale height above the midplane (z = H_gas), and at heights of a 15 M_⊕ planet’s R_Hill and min(R_Hill, R_Bondi) above the midplane. The water-ice line is marked with blue triangles.