Changes of Tropical Convection and Precipitation under Global Warming: a Column Energetics Analysis (Phase Ii)( I )

Last year, we submitted a three-year proposal to MOST to investigate the impacts of global warming on regional convection and precipitation changes across the tropics. Unfortunately, the proposal was approved only for the first-year by MOST (Project title「Changes in Tropical Convection and Precipitation under Global Warming: A Column Energetics Analysis」). Based on the previous proposal with some modifications of the work items, this year we submit a two-year proposal entitled 「Changes in Tropical Convection and Precipitation under Global Warming: A Column Energetics Analysis (Phase II)」 as a follow-up study of the previous one. In this proposal, we plan to utilize the multi-model ensemble means of CMIP6 HighResMIP outputs to carry out the following tasks; (i) analyze changes of tropical convection (including intensity and structure) and precipitation under global warming, (ii) investigate changes of precipitation efficiency across the tropics, and (iii) analyze changes of surface latent heat flux (evaporation) under global warming. We also explore the physical mechanisms attributing to the above changes using the moisture and energy budget equations under convective quasi-equilibrium approximations.