Fig. 7: Schematic diagram of precipitation inhomogeneity over the sea and land in the MC.

Convection and precipitation distributions in clean (upper panel) and polluted (lower panel) environments are shown. Arrow thickness represents the strength of convection. The ocean color is shown relative to the temperature of the land. The schematic illustrates a land-enhanced precipitation regime in a clean air environment and an ocean-dominant precipitation regime in a polluted air environment. Aerosol-induced radiative cooling stabilizes the lower troposphere more over land than over the ocean, enhancing low-level convergence and convection over the sea.