(Table 2) Age determination of Arctic Ocean sediment cores

Holocene ages are median probability ages based on calibration using CALIB v 5.0.2 (data are available at http://calib.qub.ac.uk/calib/); older ages were calibrated using the Fairbanks0107 program (Fairbanks et al., 2005). No DeltaR was applied.

全新世年代为采用CALIB v5.0.2版本校准得到的中值概率年代（数据可从http://calib.qub.ac.uk/calib/获取）；较老的年代则通过Fairbanks0107程序（Fairbanks等人，2005）完成校准，且未应用DeltaR（ΔR）校正。