Mg/Ca ratios of Globigerinoides ruber of sediment core GeoB4905-4, supplement to: Weldeab, Syee; Schneider, Ralph R; Kölling, Martin; Wefer, Gerold (2005): Holocene African droughts relate to eastern equatorial Atlantic cooling. Geology, 33(12), 981-984

Syee Weldeab, Ralph R Schneider, Martin Kölling & Gerold Wefer
Here we present evidence that the Holocene African monsoon system (AMS) varied in response to the eastern equatorial Atlantic sea-surface temperature (SST). Several short-term episodes of decreased moisture availability as a result of low eastern equatorial Atlantic SST are suggested by planktonic foraminiferal Mg/Ca ratios. These episodes promoted a weakening of the AMS and thus determined the timing and intensity of arid periods. Local sea-surface salinities also reveal regional patterns of precipitation in equatorial western...
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