Fig. 2: Deglacial reconstructions at site MD97-2106. | Nature Communications

Fig. 2: Deglacial reconstructions at site MD97-2106.

From: Contributions of biological and physical dynamics to deglacial CO2 release from the polar Southern Ocean

Fig. 2: Deglacial reconstructions at site MD97-2106.

a Sea surface temperature (SST)28. b EPICA Dome C (EDC) δD, a proxy for Antarctic temperature72. Triangles at the bottom are age tie points based on SST at site MD97-2106 and EDC δD, and crosses represent 14C dates28,29. c Deep-water [CO32-]; (d) Deep-water [O2]; (e) Deep-water [PO43-]. In (c–e) curves show LOESS smoothed probability maximum trends with envelopes representing ±1σ error ranges including uncertainties from analytical measurements, calibrations, and the age model. In (c–e), empty circles with error bars on the y-axes show the averages and ±1 standard deviations for the late Holocene data derived from core-top sediment samples. Grey vertical shadings highlight the Younger Dryas (YD) and Heinrich Stadial 1 (HS1), which are interrupted by the Antarctic Cold Reversal (ACR). The vertical dashed line marks the boundary between the early and late stages of HS1.

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