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Sahel's Drought Pros And Cons

456 Words2 Pages
The Sahel's drought problem has attracted worldwide attention over the last few decades, but still, the cause of the drought in that area has not been determined yet. Efforts to understand the reasons of the drought have been progressed along two directions (Brooks, 2004). One, emphasizes the role of the feedback between the atmospheric circulation and land surface processes (Charney, 1975). The other, argues that the influence of global oceanic forcing is the main reason of the variability of rainfall in the Sahel. This critical review will discuss these two directions based on two papers written by Nicholson (2000) and Giannini et al (2003), respectively, and try to analyze both cons and pros of this paired papers. The first paper (Nicholson,
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