Supplementary Data for Sea-Level-Driven Strait Closures Enhance South China Sea Intermediate Water Ventilation with Impacts on North Pacific<b>.</b>

Foraminiferal radiocarbon dating, grain size, total organic carbon (TOC), and redox-sensitive trace element data from core S17 (20°01.7410′N, 115°01.9076′E; 751 m water depth) in the northern South China Sea. These data supplement the research article entitled "<i>Sea-Level-Driven Strait Closures Enhance South China Sea Intermediate Water Ventilation with Impacts on North Pacific</i>" (<b>DOI:</b><b>10.1038/s43247-025-03039-w</b>) published at Communications Earth &amp; Environment.