Hydroclimate proxy data from the eastern tropical Indian Ocean

Mg/Ca-based SST and thermocline temperatures with 1Sigma error at different sites, their difference (DeltaT), and the average DeltaT values for different periods with 95% confidence interval (CI). Also shown are hydrogen isotope (dD) values of n-C31 alkanes relative to the standard mean ocean water (per mil SMOW) with the 95% CI (LGM values are corrected for ice-volume), the C31 n-alkane concentrations in nanogram per gram sediment (ng g-1), the Carbon Preference Index (CPI27-33) as a measure of the degree of terrestrial organic matter degradation (higher CPI reflects less degraded plant waxes and vice versa), and their 1Sigma standard deviations (SD).

基于镁钙比（Mg/Ca）的海表温度（Sea Surface Temperature, SST）与不同站位的温跃层温度，均附带1σ误差；二者的差值（ΔT），以及不同时段的ΔT平均值，亦均附带95%置信区间（Confidence Interval, CI）。同时展示了n-C31正构烷烃相对于标准海水（Standard Mean Ocean Water, SMOW）的氢同位素（dD）值（单位为千分率），且附带95%置信区间，其中末次冰盛期（Last Glacial Maximum, LGM）的数值已完成冰体积校正；n-C31正构烷烃的沉积物浓度，单位为纳克每克（ng·g⁻¹）；作为陆生有机质降解程度表征指标的碳优势指数（Carbon Preference Index, CPI27-33）（该指数越高，代表植物蜡降解程度越低，反之则越高），以及上述所有指标的1σ标准偏差（Standard Deviation, SD）。