Graphical Abstract

Miyakawa, T., and H. Miura, 2019: Resolution dependencies of tropical convection in a global cloud/cloud-system resolving model. J. Meteor. Soc. Japan, 97, 745-756. Abstract with highlights

Plain Language Summary: Global non-hydrostatic simulations using cloud/cloud-system resolving horizontal meshes of 3.5-, 7-, and 14-km produce remarkably different amount of clouds in the tropics despite identical cloud-microphysics applied. The tropical mean upward motion, bounded by global scale radiative balance, is insensitive to the model resolution. However, it is realized by smaller and stronger updrafts in higher resolution models, resulting in a shorter residence time of air parcels within the updrafts, causing more cloud particles to survive without falling out as precipitation.