Dynamics of the Conformal-Cubic Atmospheric Model projected climate-change signal over southern Africa.

The article presents a study which investigates the climate-change signal in southern and tropical Africa as projected by a high-resolution numerical regional climate model (RCM). Researchers used a global circulation model (GCM) and conformal-cubic atmospheric model (CCAM) to simulate the climate change in the region from 1975-2005 and 2070-2100. Results show that simulation of the subtropical high-pressure belt in winter has enhanced zonal flow in South Africa and a displacement of frontal rain bands towards the south. The occurrence of cloud bands that constitute the South Indian Convergence Zone (SICZ) over the southeastern subcontinent is the result of simulating the Indian Ocean High (IOH).