Effective α_eff value and turbulence velocity over sound speed ratio for the DIANA typical disk and β_mid = 10⁴ (left panels) and β_mid = 10⁶ (right panels). The white contours in the upper panels show the location where the ohmic Elsasser number Λ_Ohm is unity. The level where there is no MRI in the inner disk midplane, the so-called dead zone, is shown in red (Jin = 1). For , MRI is entirely suppressed and α_eff tends to zero. Also shown in the upper panels is the contour where β = 1. The contours in the lower panels indicate the gas-phase CO abundances.