At precessional scales, the AAT and WAP SST records show a decreasing trend over the course of the Holocene until ~2 ka ( Fig. 6a, b ), which is thought to be primarily driven by shortening of Antarctic summers, apparently in response to declining austral spring insolation at ~65°S (ref. 49 , 57 ).
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A Southern Ocean trigger for Northwest Pacific ventilation during the Holocene?
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