Sahel drought: Call for joint action
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چکیده
منابع مشابه
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The Sahel’s experience of adapting to changes in rainfall on a scale at least comparable to that of climate change scenarios, between the 1960s and the 1990s, suggests that lessons can be learnt that may have a wider utility for policy in the future. The Sahel is a major global agroecological region and its success in adaptation will influence the achievement of the global Millennium Developmen...
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The Sahel, the transition zone between the Saharan desert and the rainforests of Central Africa and the Guinean Coast, experienced a severe drying trend from the 1950s to the 1980s, from which there has been partial recovery. Continuation of either the drying trend or the more recent ameliorating trend would have far-ranging implications for the economy and ecology of the region. Coupled atmosp...
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[1] The Sahel region of Africa underwent a pronounced interdecadal drying trend in the latter half of the 20th century. In order to investigate this drying trend, several ensembles of numerical experiments are conducted using a recently developed atmospheric general circulation model (AM2, developed at NOAA’s Geophysical Fluid Dynamics Laboratory). When the model is forced with the time series ...
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Some drought years over sub-Saharan west Africa (1972, 1977, 1984) have been previously related to a cross-equatorial Atlantic gradient pattern with anomalously warm sea surface temperatures (SSTs) south of 10 N and anomalously cold SSTs north of 10 N. This SST dipolelike pattern was not characteristic of 1983, the third driest summer of the twentieth century in the Sahel. This study presents e...
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ژورنال
عنوان ژورنال: Nature
سال: 1984
ISSN: 0028-0836,1476-4687
DOI: 10.1038/307497a0