10.1594/PANGAEA.921091Jöhnck, JanikaJanikaJöhnck0000-0001-5588-5430Kuhnt, WolfgangWolfgangKuhntHolbourn, Ann EAnn EHolbourn0000-0002-3167-0862Andersen, NilsNilsAndersen0000-0003-4148-6791PANGAEA2020Bay of BengalIndian MonsoonIODPMg/Ca paleothermometryMiocene-Pliocene transitionStable isotopesEvent labelSample code/labelDEPTH, sediment/rockDepth, composite revisedAGESpeciesForaminifera, benthic δ13CForaminifera, benthic δ18OCibicidoides wuellerstorfi, δ13CSize fractionTrilobatus sacculifer, δ13CTrilobatus sacculifer, δ18OΔδ18O, gradientΔδ13C, gradientδ18O, seawater, reconstructedTrilobatus sacculifer, Magnesium/Calcium ratioMixed layer temperatureCore drillingDSDP/ODP/IODP sample designationsee Jöhnck et al. (2020)Mass spectrometerCalculated according to Bemis et al., 1998CorrectedCalculated, according to Anand et al. (2003)Calculated according to (Mohtadi et al. 2014)Exp353Joides ResolutionDataset10.1029/2020PA00392310.1029/2002PA00084610.1029/98PA0007010.14379/iodp.proc.353.202.202010.1038/nature1319614200 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalWe reconstructed the Indian Monsoon variability of the Earth's strongest hydrological system, at International Ocean Discovery Program (IODP) Expedition 353 Site U1448 in the Andaman Sea over the interval 6.24 to 4.91 Ma. We used high-resolution benthic and planktic foraminiferal carbon and oxygen isotopes and Mg/Ca measurements of the mixed layer foraminifer Trilobatus sacculifer to reconstruct the isotopic composition of seawater (δ¹⁸Osw) and the gradient between planktic and benthic foraminiferal δ¹³C.93.000193.000110.633910.6367