Increase in African dust flux at the onset of commercial agriculture in the Sahel region
The Sahara Desert is the largest source of mineral dust in the world1. Emissions of African dust increased sharply in the early 1970s (ref. 2), a change that has been attributed mainly to drought in the Sahara/Sahel region2 caused by changes in the global distribution of sea surface temperature3,4. The human contribution to land degradation and dust mobilization in this region remains poorly understood5-11, owing to the paucity of data that would allow the identification of long-term trends in...[Show more]
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