Climate of the Past Discussions Interactive comment on “ Magnitude and timing of Equatorial Atlantic surface warming during the last glacial bipolar oscillations ” by S . Weldeab

I am pleased to review the manuscript authored by S. Weldeab and entitled “Magnitude and timing of equatorial Atlantic surface warming during the last glacial bipolar oscillations”. Weldeab’s manuscript targets the relationship between the Equatorial Atlantic surface ocean temperature changes and the “out-of-phase” bipolar/interhemispheric climate oscillations during marine isotope stages 4 and 3 of the last climatic cycle. Surface ocean temperature reconstructions spanning the interval between 75 and 25 ka BP are derived from Mg/Ca measurements performed on the calcite tests of the planktonic foraminifer Globigerinoides ruber (pink variety) along a sediment core (MD032707) taken at 1295 m in the Gulf of Guinea. Previous studies led by the S. Weldeab have shown the high quality of this core as a paleoceanographic archive and the suitability of the foraminiferal species and geochemical proxies used here to reconstruct the hydrographic evolution of the surface ocean in the Gulf of Guinea (Weldeab et al., C838