Cloud-related physical parameterizations for Taiwan Earth System Model

In the Consortium for Climate Change project supported by Ministry of Science and Technology, Taiwan, R.O.C., many efforts have been devoted to building a new earth system model i.e., Taiwan Earth System Model (TaiESM) which is developed based on Community Earth System Model (CESM) of DOE/UCAR/NCAR. In the presentation, we will specifically demonstrate some of our modeling works related to convective clouds and stratiform clouds of NCAR CESM. Physical parameterizations modified include adding a bulk two-moment warm cloud parameterization for converting cloud liquid water to rain water in the deep cumulus parameterization scheme, implementing a new cloud fraction parameterization into stratiform cloud macrophysics, and implementing a full two-moment bulk cloud microphysics scheme into stratiform cloud microphysics. Corresponding impacts regarding to individual implementations of physical processes will be shown. Finally, we would like to address our on-going works related to unifying cloud macrophysics and microphysics schemes for TaiESM. Our new developed global model can be very useful and applicable for studying aerosol-cloud-climate interaction.