West Africa's Hazardous Winds: Harmattan Carries Dust, Spreads Disease [1]
"Every year, from December to April, the Harmattan sweeps across Africa. This cool, dry and dust-laden wind gets its name from haramata, a word in the Ghanaian language Fanti. ... The Harmattan's effects go beyond reduced visibility and dryness. It has an impact on human health, agriculture and ecosystems."