The Harmattan Dust in Ghana

The Harmattan is an important seasonal atmospheric phenomenon that affects most parts of West Africa near the Gulf of Guinea during the northern winter. This book covers the experimental study of the physical characteristics of the Harmattan dust aerosol in Ghana near the Gulf of Guinea. It features: The Harmattan definition and period of occurrence, effects on the environment, the Saharan dust transport and characteristics over regions traversed; mobilisation and sedimentation of aerosol particle, the Sahara dust events and influence of large scale atmospheric systems including the ITCZ and the North Atlantic Oscillation; The principle of measurements and the experimental methods to determine the Harmattan dust physical characteristics including: the mean particle number and mass concentrations, particle number and mass frequency distributions, particle size (diameter), transit time, dust flux and deposition rate, relationship between the Harmattan dust and the ITCZ as well as the NAO Index