Radiative Impact of Mineral Dust on Monsoon Precipitation Variability Over West Africa
The radiative forcing of dust and its impact on precipitation over the West Africa monsoon (WAM) region is simulated using a coupled meteorology and aerosol/chemistry model (WRF-Chem). During the monsoon season, dust is a dominant contributor to aerosol optical depth (AOD) over West Africa. In the control simulation, on 24-h domain average, dust has a cooling effect (-6.11 Wm-2) at the surface, a warming effect (6.94 Wm-2) in the atmosphere, and a relatively small TOA forcing (0.83Wm-2). Dust modifies the surface energy budget and atmospheric diabatic heating. As a result, atmospheric stability ...
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