One hundred-Earth-year and zonal mean net (shortwave plus longwave) cloud radiative effect at the top of the atmosphere (a), total (vertically integrated) water vapor amount in the atmosphere (b), cloud fraction (c, e, g), and cloud water concentration including liquid water and ice water (d, f, h) in three experiments with the default diffusivity (c−d), and 10 times(e−f) and 100 times (g−h) the default diffusivity.