Role of coastal topography in pre-tropical cyclone disturbance formation
We hypothesize that the mountains to the south of Senegal, in Guinea, Sierra Leone, and Liberia have a modulating influence on MCS development in this region. A secondary topographic element of importance is the highlands just northeast of Senegal in Mauritania.
In late August 2006, a MCS developed over West Africa. It transitioned from land to ocean on 31 August, and days later became a tropical cyclone, eventually strengthening into Hurricane Florence. We use a series of idealized sensitivity studies to examine the influence of the topography on the initiation and development of the pre-Florence MCS using the Weather Research and Forecasting (WRF) model.