Chemical (solid) and transport (dashed) timescales of (a) SO, (b) S0₂, (c) S0₃, (d) CO, (e) COS, (f) O, (g) O₂, and (h) NO₂ in both the nominal model (black) and Model A (red). We note that the chemical timescale is measured by n_i/L_i. The transport timescale is measured by t_eddy = H²IK_zz, where H = k_BTlmg is the density scale height, k_B is the Boltzmann constant, T is the temperature, m is the atmospheric molecular mass, and g is the gravity.