Pronounced Pacific-side Arctic sea ice melting during the Late Holocene

Data file 1 shows the measured data of core LV77-36-1 used in this study, including the Age model, biomarker dataset,diatom species. Data file 2 shows the referenced data in Extended Data Table 1, including the paleo-climate evidences used in this study from 20 referenced sites. Data file 3 shows the referenced data in Extended Data Table 2, including the paleo-sea ice records compiled in this study from the pan Arctic regions.