No. 49, May/June 2001
Linkages between Climate Change and Desertification: Rosenfeld

Fig. 1: Frequency of dust occurrence at Gao, 1957-1987
compared to rainfall anomalies in the Sahel

Source: Mbourou et al, 1997

Note: in the figure above, rainfall is expressed as a regionally averaged, standardized departure (that is, departure from the long-term mean divided by the standard departure), but the axis of the rainfall graph is inverted to facilitate comparison with dust occurrence. Dust is represented by the number of days with dust haze.

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