The UK Met Office's radiation code was recently incorporated on CPTECs climate model. To provide its necessary input the Community Climate Model micro physics parameterization was introduced as well. We show that while atmospheric absorption is much better represented with the new implementations, large differences from observed Cloud Radiative Forcing and all-sky surface fluxes remain. A detailed analysis of both SW and LW CRF over three regions indicates that at least part of these come from model's deficiencies in reproducing the observed cloud structure and in simulating cloud radiative parameters such as droplets and ice crystals effective radii.