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Following diagnostic work two decades ago, this study examines the long‐term variations of rainfall in the West African Sahel and the underlying circulation mechanisms over the past century. Raingauge measurements bear out DRY regimes during 1910–1919 and 1979–1988 and WET regimes during 1950–1959 and 1999–2008. In the WET as compared to the DRY regimes the cross‐equatorial winds from the Southern...
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